diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b392f2dc2..c8e9ae33b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,7 +35,7 @@ jobs:
       - name: Install ${{ steps.gettoolchain.outputs.toolchain }} Rust toolchain
         # Latest version available on this commit is 1.71.1
         # Commit date is Aug 3, 2023
-        uses: dtolnay/rust-toolchain@bb45937a053e097f8591208d8e74c90db1873d07
+        uses: dtolnay/rust-toolchain@d8352f6b1d2e870bc5716e7a6d9b65c4cc244a1a
         with:
           toolchain: ${{ steps.gettoolchain.outputs.toolchain }}
 
diff --git a/backend/package-lock.json b/backend/package-lock.json
index e42474913..0576e27df 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -23,7 +23,7 @@
         "rust-gbt": "file:./rust-gbt",
         "socks-proxy-agent": "~7.0.0",
         "typescript": "~4.9.3",
-        "ws": "~8.16.0"
+        "ws": "~8.17.0"
       },
       "devDependencies": {
         "@babel/code-frame": "^7.18.6",
@@ -7690,9 +7690,9 @@
       }
     },
     "node_modules/ws": {
-      "version": "8.16.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.16.0.tgz",
-      "integrity": "sha512-HS0c//TP7Ina87TfiPUz1rQzMhHrl/SG2guqRcTOIUYD2q8uhUdNHZYJUaQ8aTGPzCh+c6oawMKW35nFl1dxyQ==",
+      "version": "8.17.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.17.0.tgz",
+      "integrity": "sha512-uJq6108EgZMAl20KagGkzCKfMEjxmKvZHG7Tlq0Z6nOky7YF7aq4mOx6xK8TJ/i1LeK4Qus7INktacctDgY8Ow==",
       "engines": {
         "node": ">=10.0.0"
       },
@@ -13424,9 +13424,9 @@
       }
     },
     "ws": {
-      "version": "8.16.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.16.0.tgz",
-      "integrity": "sha512-HS0c//TP7Ina87TfiPUz1rQzMhHrl/SG2guqRcTOIUYD2q8uhUdNHZYJUaQ8aTGPzCh+c6oawMKW35nFl1dxyQ==",
+      "version": "8.17.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.17.0.tgz",
+      "integrity": "sha512-uJq6108EgZMAl20KagGkzCKfMEjxmKvZHG7Tlq0Z6nOky7YF7aq4mOx6xK8TJ/i1LeK4Qus7INktacctDgY8Ow==",
       "requires": {}
     },
     "y18n": {
diff --git a/backend/package.json b/backend/package.json
index affd89ead..a330fa709 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -52,7 +52,7 @@
     "redis": "^4.6.6",
     "socks-proxy-agent": "~7.0.0",
     "typescript": "~4.9.3",
-    "ws": "~8.16.0"
+    "ws": "~8.17.0"
   },
   "devDependencies": {
     "@babel/code-frame": "^7.18.6",
diff --git a/backend/src/api/bitcoin/bitcoin-api-abstract-factory.ts b/backend/src/api/bitcoin/bitcoin-api-abstract-factory.ts
index cc0c801b5..4ec50f4b3 100644
--- a/backend/src/api/bitcoin/bitcoin-api-abstract-factory.ts
+++ b/backend/src/api/bitcoin/bitcoin-api-abstract-factory.ts
@@ -1,4 +1,4 @@
-import { IBitcoinApi } from './bitcoin-api.interface';
+import { IBitcoinApi, TestMempoolAcceptResult } from './bitcoin-api.interface';
 import { IEsploraApi } from './esplora-api.interface';
 
 export interface AbstractBitcoinApi {
@@ -22,6 +22,7 @@ export interface AbstractBitcoinApi {
   $getScriptHash(scripthash: string): Promise<IEsploraApi.ScriptHash>;
   $getScriptHashTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]>;
   $sendRawTransaction(rawTransaction: string): Promise<string>;
+  $testMempoolAccept(rawTransactions: string[], maxfeerate?: number): Promise<TestMempoolAcceptResult[]>;
   $getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend>;
   $getOutspends(txId: string): Promise<IEsploraApi.Outspend[]>;
   $getBatchedOutspends(txId: string[]): Promise<IEsploraApi.Outspend[][]>;
diff --git a/backend/src/api/bitcoin/bitcoin-api.interface.ts b/backend/src/api/bitcoin/bitcoin-api.interface.ts
index e176566d7..6e8583f6f 100644
--- a/backend/src/api/bitcoin/bitcoin-api.interface.ts
+++ b/backend/src/api/bitcoin/bitcoin-api.interface.ts
@@ -205,3 +205,16 @@ export namespace IBitcoinApi {
     "utxo_size_inc": number;
   }
 }
+
+export interface TestMempoolAcceptResult {
+  txid: string,
+  wtxid: string,
+  allowed?: boolean,
+  vsize?: number,
+  fees?: {
+    base: number,
+    "effective-feerate": number,
+    "effective-includes": string[],
+  },
+  ['reject-reason']?: string,
+}
diff --git a/backend/src/api/bitcoin/bitcoin-api.ts b/backend/src/api/bitcoin/bitcoin-api.ts
index d19eb06ac..c3304b432 100644
--- a/backend/src/api/bitcoin/bitcoin-api.ts
+++ b/backend/src/api/bitcoin/bitcoin-api.ts
@@ -1,6 +1,6 @@
 import * as bitcoinjs from 'bitcoinjs-lib';
 import { AbstractBitcoinApi, HealthCheckHost } from './bitcoin-api-abstract-factory';
-import { IBitcoinApi } from './bitcoin-api.interface';
+import { IBitcoinApi, TestMempoolAcceptResult } from './bitcoin-api.interface';
 import { IEsploraApi } from './esplora-api.interface';
 import blocks from '../blocks';
 import mempool from '../mempool';
@@ -174,6 +174,14 @@ class BitcoinApi implements AbstractBitcoinApi {
     return this.bitcoindClient.sendRawTransaction(rawTransaction);
   }
 
+  async $testMempoolAccept(rawTransactions: string[], maxfeerate?: number): Promise<TestMempoolAcceptResult[]> {
+    if (rawTransactions.length) {
+      return this.bitcoindClient.testMempoolAccept(rawTransactions, maxfeerate ?? undefined);
+    } else {
+      return [];
+    }
+  }
+
   async $getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend> {
     const txOut = await this.bitcoindClient.getTxOut(txId, vout, false);
     return {
diff --git a/backend/src/api/bitcoin/bitcoin.routes.ts b/backend/src/api/bitcoin/bitcoin.routes.ts
index a82cda3f0..ec63f4ff8 100644
--- a/backend/src/api/bitcoin/bitcoin.routes.ts
+++ b/backend/src/api/bitcoin/bitcoin.routes.ts
@@ -55,6 +55,7 @@ class BitcoinRoutes {
           .get(config.MEMPOOL.API_URL_PREFIX + 'mempool/recent', this.getRecentMempoolTransactions)
           .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId', this.getTransaction)
           .post(config.MEMPOOL.API_URL_PREFIX + 'tx', this.$postTransaction)
+          .post(config.MEMPOOL.API_URL_PREFIX + 'txs/test', this.$testTransactions)
           .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/hex', this.getRawTransaction)
           .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/status', this.getTransactionStatus)
           .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/outspends', this.getTransactionOutspends)
@@ -749,6 +750,19 @@ class BitcoinRoutes {
     }
   }
 
+  private async $testTransactions(req: Request, res: Response) {
+    try {
+      const rawTxs = Common.getTransactionsFromRequest(req);
+      const maxfeerate = parseFloat(req.query.maxfeerate as string);
+      const result = await bitcoinApi.$testMempoolAccept(rawTxs, maxfeerate);
+      res.send(result);
+    } catch (e: any) {
+      res.setHeader('content-type', 'text/plain');
+      res.status(400).send(e.message && e.code ? 'testmempoolaccept RPC error: ' + JSON.stringify({ code: e.code, message: e.message })
+        : (e.message || 'Error'));
+    }
+  }
+
 }
 
 export default new BitcoinRoutes();
diff --git a/backend/src/api/bitcoin/esplora-api.ts b/backend/src/api/bitcoin/esplora-api.ts
index a9dadf4a0..90e50d4c2 100644
--- a/backend/src/api/bitcoin/esplora-api.ts
+++ b/backend/src/api/bitcoin/esplora-api.ts
@@ -5,6 +5,7 @@ import { AbstractBitcoinApi, HealthCheckHost } from './bitcoin-api-abstract-fact
 import { IEsploraApi } from './esplora-api.interface';
 import logger from '../../logger';
 import { Common } from '../common';
+import { TestMempoolAcceptResult } from './bitcoin-api.interface';
 
 interface FailoverHost {
   host: string,
@@ -327,6 +328,10 @@ class ElectrsApi implements AbstractBitcoinApi {
     throw new Error('Method not implemented.');
   }
 
+  $testMempoolAccept(rawTransactions: string[], maxfeerate?: number): Promise<TestMempoolAcceptResult[]> {
+    throw new Error('Method not implemented.');
+  }
+
   $getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend> {
     return this.failoverRouter.$get<IEsploraApi.Outspend>('/tx/' + txId + '/outspend/' + vout);
   }
diff --git a/backend/src/api/blocks.ts b/backend/src/api/blocks.ts
index 16ae94f66..42e15bf82 100644
--- a/backend/src/api/blocks.ts
+++ b/backend/src/api/blocks.ts
@@ -839,8 +839,11 @@ class Blocks {
       } else {
         this.currentBlockHeight++;
         logger.debug(`New block found (#${this.currentBlockHeight})!`);
-        this.updateTimerProgress(timer, `getting orphaned blocks for ${this.currentBlockHeight}`);
-        await chainTips.updateOrphanedBlocks();
+        // skip updating the orphan block cache if we've fallen behind the chain tip
+        if (this.currentBlockHeight >= blockHeightTip - 2) {
+          this.updateTimerProgress(timer, `getting orphaned blocks for ${this.currentBlockHeight}`);
+          await chainTips.updateOrphanedBlocks();
+        }
       }
 
       this.updateTimerProgress(timer, `getting block data for ${this.currentBlockHeight}`);
diff --git a/backend/src/api/chain-tips.ts b/backend/src/api/chain-tips.ts
index b68b0b281..b7fd05ad8 100644
--- a/backend/src/api/chain-tips.ts
+++ b/backend/src/api/chain-tips.ts
@@ -12,32 +12,68 @@ export interface OrphanedBlock {
   height: number;
   hash: string;
   status: 'valid-fork' | 'valid-headers' | 'headers-only';
+  prevhash: string;
 }
 
 class ChainTips {
   private chainTips: ChainTip[] = [];
-  private orphanedBlocks: OrphanedBlock[] = [];
+  private orphanedBlocks: { [hash: string]: OrphanedBlock } = {};
+  private blockCache: { [hash: string]: OrphanedBlock } = {};
+  private orphansByHeight: { [height: number]: OrphanedBlock[] } = {};
 
   public async updateOrphanedBlocks(): Promise<void> {
     try {
       this.chainTips = await bitcoinClient.getChainTips();
-      this.orphanedBlocks = [];
+
+      const start = Date.now();
+      const breakAt = start + 10000;
+      let newOrphans = 0;
+      this.orphanedBlocks = {};
 
       for (const chain of this.chainTips) {
         if (chain.status === 'valid-fork' || chain.status === 'valid-headers') {
-          let block = await bitcoinClient.getBlock(chain.hash);
-          while (block && block.confirmations === -1) {
-            this.orphanedBlocks.push({
-              height: block.height,
-              hash: block.hash,
-              status: chain.status
-            });
-            block = await bitcoinClient.getBlock(block.previousblockhash);
+          const orphans: OrphanedBlock[] = [];
+          let hash = chain.hash;
+          do {
+            let orphan = this.blockCache[hash];
+            if (!orphan) {
+              const block = await bitcoinClient.getBlock(hash);
+              if (block && block.confirmations === -1) {
+                newOrphans++;
+                orphan = {
+                  height: block.height,
+                  hash: block.hash,
+                  status: chain.status,
+                  prevhash: block.previousblockhash,
+                };
+                this.blockCache[hash] = orphan;
+              }
+            }
+            if (orphan) {
+              orphans.push(orphan);
+            }
+            hash = orphan?.prevhash;
+          } while (hash && (Date.now() < breakAt));
+          for (const orphan of orphans) {
+            this.orphanedBlocks[orphan.hash] = orphan;
           }
         }
+        if (Date.now() >= breakAt) {
+          logger.debug(`Breaking orphaned blocks updater after 10s, will continue next block`);
+          break;
+        }
       }
 
-      logger.debug(`Updated orphaned blocks cache. Found ${this.orphanedBlocks.length} orphaned blocks`);
+      this.orphansByHeight = {};
+      const allOrphans = Object.values(this.orphanedBlocks);
+      for (const orphan of allOrphans) {
+        if (!this.orphansByHeight[orphan.height]) {
+          this.orphansByHeight[orphan.height] = [];
+        }
+        this.orphansByHeight[orphan.height].push(orphan);
+      }
+
+      logger.debug(`Updated orphaned blocks cache. Fetched ${newOrphans} new orphaned blocks. Total ${allOrphans.length}`);
     } catch (e) {
       logger.err(`Cannot get fetch orphaned blocks. Reason: ${e instanceof Error ? e.message : e}`);
     }
@@ -48,13 +84,7 @@ class ChainTips {
       return [];
     }
 
-    const orphans: OrphanedBlock[] = [];
-    for (const block of this.orphanedBlocks) {
-      if (block.height === height) {
-        orphans.push(block);
-      }
-    }
-    return orphans;
+    return this.orphansByHeight[height] || [];
   }
 }
 
diff --git a/backend/src/api/common.ts b/backend/src/api/common.ts
index 92dfceb52..2c9338814 100644
--- a/backend/src/api/common.ts
+++ b/backend/src/api/common.ts
@@ -946,6 +946,33 @@ export class Common {
     return this.validateTransactionHex(matches[1].toLowerCase());
   }
 
+  static getTransactionsFromRequest(req: Request, limit: number = 25): string[] {
+    if (!Array.isArray(req.body) || req.body.some(hex => typeof hex !== 'string')) {
+      throw Object.assign(new Error('Invalid request body (should be an array of hexadecimal strings)'), { code: -1 });
+    }
+
+    if (limit && req.body.length > limit) {
+      throw Object.assign(new Error('Exceeded maximum of 25 transactions'), { code: -1 });
+    }
+
+    const txs = req.body;
+
+    return txs.map(rawTx => {
+      // Support both upper and lower case hex
+      // Support both txHash= Form and direct API POST
+      const reg = /^((?:[a-fA-F0-9]{2})+)$/;
+      const matches = reg.exec(rawTx);
+      if (!matches || !matches[1]) {
+        throw Object.assign(new Error('Invalid hex string'), { code: -2 });
+      }
+
+      // Guaranteed to be a hex string of multiple of 2
+      // Guaranteed to be lower case
+      // Guaranteed to pass validation (see function below)
+      return this.validateTransactionHex(matches[1].toLowerCase());
+    });
+  }
+
   private static validateTransactionHex(txhex: string): string {
     // Do not mutate txhex
 
diff --git a/backend/src/api/explorer/nodes.api.ts b/backend/src/api/explorer/nodes.api.ts
index 3c65ee1f8..22c854fcc 100644
--- a/backend/src/api/explorer/nodes.api.ts
+++ b/backend/src/api/explorer/nodes.api.ts
@@ -666,7 +666,9 @@ class NodesApi {
         node.last_update = null;
       }
   
-      const sockets = (node.addresses?.map(a => a.addr).join(',')) ?? '';
+      const uniqueAddr = [...new Set(node.addresses?.map(a => a.addr))];
+      const formattedSockets = (uniqueAddr.join(',')) ?? '';
+
       const query = `INSERT INTO nodes(
           public_key,
           first_seen,
@@ -695,13 +697,13 @@ class NodesApi {
         node.alias,
         this.aliasToSearchText(node.alias),
         node.color,
-        sockets,
+        formattedSockets,
         JSON.stringify(node.features),
         node.last_update,
         node.alias,
         this.aliasToSearchText(node.alias),
         node.color,
-        sockets,
+        formattedSockets,
         JSON.stringify(node.features),
       ]);
     } catch (e) {
diff --git a/backend/src/api/mempool.ts b/backend/src/api/mempool.ts
index 176bedddb..c93d51005 100644
--- a/backend/src/api/mempool.ts
+++ b/backend/src/api/mempool.ts
@@ -404,6 +404,10 @@ class Mempool {
 
       const newAccelerationMap: { [txid: string]: Acceleration } = {};
       for (const acceleration of newAccelerations) {
+        // skip transactions we don't know about
+        if (!this.mempoolCache[acceleration.txid]) {
+          continue;
+        }
         newAccelerationMap[acceleration.txid] = acceleration;
         if (this.accelerations[acceleration.txid] == null) {
           // new acceleration
diff --git a/backend/src/api/websocket-handler.ts b/backend/src/api/websocket-handler.ts
index d4ff7efe3..f92e6cdfe 100644
--- a/backend/src/api/websocket-handler.ts
+++ b/backend/src/api/websocket-handler.ts
@@ -3,6 +3,7 @@ import * as WebSocket from 'ws';
 import {
   BlockExtended, TransactionExtended, MempoolTransactionExtended, WebsocketResponse,
   OptimizedStatistic, ILoadingIndicators, GbtCandidates, TxTrackingInfo,
+  MempoolBlockDelta, MempoolDelta, MempoolDeltaTxids
 } from '../mempool.interfaces';
 import blocks from './blocks';
 import memPool from './mempool';
@@ -346,6 +347,17 @@ class WebsocketHandler {
             }
           }
 
+          if (parsedMessage && parsedMessage['track-accelerations'] != null) {
+            if (parsedMessage['track-accelerations']) {
+              client['track-accelerations'] = true;
+              response['accelerations'] = JSON.stringify({
+                accelerations: Object.values(memPool.getAccelerations()),
+              });
+            } else {
+              client['track-accelerations'] = false;
+            }
+          }
+
           if (parsedMessage.action === 'init') {
             if (!this.socketData['blocks']?.length || !this.socketData['da'] || !this.socketData['backendInfo'] || !this.socketData['conversions']) {
               this.updateSocketData();
@@ -364,6 +376,18 @@ class WebsocketHandler {
             client['track-donation'] = parsedMessage['track-donation'];
           }
 
+          if (parsedMessage['track-mempool-txids'] === true) {
+            client['track-mempool-txids'] = true;
+          } else if (parsedMessage['track-mempool-txids'] === false) {
+            delete client['track-mempool-txids'];
+          }
+
+          if (parsedMessage['track-mempool'] === true) {
+            client['track-mempool'] = true;
+          } else if (parsedMessage['track-mempool'] === false) {
+            delete client['track-mempool'];
+          }
+
           if (Object.keys(response).length) {
             client.send(this.serializeResponse(response));
           }
@@ -524,6 +548,7 @@ class WebsocketHandler {
     const vBytesPerSecond = memPool.getVBytesPerSecond();
     const rbfTransactions = Common.findRbfTransactions(newTransactions, deletedTransactions);
     const da = difficultyAdjustment.getDifficultyAdjustment();
+    const accelerations = memPool.getAccelerations();
     memPool.handleRbfTransactions(rbfTransactions);
     const rbfChanges = rbfCache.getRbfChanges();
     let rbfReplacements;
@@ -545,6 +570,33 @@ class WebsocketHandler {
 
     const latestTransactions = memPool.getLatestTransactions();
 
+    if (memPool.isInSync()) {
+      this.mempoolSequence++;
+    }
+
+    const replacedTransactions: { replaced: string, by: TransactionExtended }[] = [];
+    for (const tx of newTransactions) {
+      if (rbfTransactions[tx.txid]) {
+        for (const replaced of rbfTransactions[tx.txid]) {
+          replacedTransactions.push({ replaced: replaced.txid, by: tx });
+        }
+      }
+    }
+    const mempoolDeltaTxids: MempoolDeltaTxids = {
+      sequence: this.mempoolSequence,
+      added: newTransactions.map(tx => tx.txid),
+      removed: deletedTransactions.map(tx => tx.txid),
+      mined: [],
+      replaced: replacedTransactions.map(replacement => ({ replaced: replacement.replaced, by: replacement.by.txid })),
+    };
+    const mempoolDelta: MempoolDelta = {
+      sequence: this.mempoolSequence,
+      added: newTransactions,
+      removed: deletedTransactions.map(tx => tx.txid),
+      mined: [],
+      replaced: replacedTransactions,
+    };
+
     // update init data
     const socketDataFields = {
       'mempoolInfo': mempoolInfo,
@@ -604,9 +656,11 @@ class WebsocketHandler {
     const addressCache = this.makeAddressCache(newTransactions);
     const removedAddressCache = this.makeAddressCache(deletedTransactions);
 
-    if (memPool.isInSync()) {
-      this.mempoolSequence++;
-    }
+    // pre-compute acceleration delta
+    const accelerationUpdate = {
+      added: accelerationDelta.map(txid => accelerations[txid]).filter(acc => acc != null),
+      removed: accelerationDelta.filter(txid => !accelerations[txid]),
+    };
 
     // TODO - Fix indentation after PR is merged
     for (const server of this.webSocketServers) {
@@ -847,6 +901,18 @@ class WebsocketHandler {
         response['rbfLatestSummary'] = getCachedResponse('rbfLatestSummary', rbfSummary);
       }
 
+      if (client['track-mempool-txids']) {
+        response['mempool-txids'] = getCachedResponse('mempool-txids', mempoolDeltaTxids);
+      }
+
+      if (client['track-mempool']) {
+        response['mempool-transactions'] = getCachedResponse('mempool-transactions', mempoolDelta);
+      }
+
+      if (client['track-accelerations'] && (accelerationUpdate.added.length || accelerationUpdate.removed.length)) {
+        response['accelerations'] = getCachedResponse('accelerations', accelerationUpdate);
+      }
+
       if (Object.keys(response).length) {
         client.send(this.serializeResponse(response));
       }
@@ -992,6 +1058,31 @@ class WebsocketHandler {
 
     const mBlocksWithTransactions = mempoolBlocks.getMempoolBlocksWithTransactions();
 
+    if (memPool.isInSync()) {
+      this.mempoolSequence++;
+    }
+
+    const replacedTransactions: { replaced: string, by: TransactionExtended }[] = [];
+    for (const txid of Object.keys(rbfTransactions)) {
+      for (const replaced of rbfTransactions[txid].replaced) {
+        replacedTransactions.push({ replaced: replaced.txid, by: rbfTransactions[txid].replacedBy });
+      }
+    }
+    const mempoolDeltaTxids: MempoolDeltaTxids = {
+      sequence: this.mempoolSequence,
+      added: [],
+      removed: [],
+      mined: transactions.map(tx => tx.txid),
+      replaced: replacedTransactions.map(replacement => ({ replaced: replacement.replaced, by: replacement.by.txid })),
+    };
+    const mempoolDelta: MempoolDelta = {
+      sequence: this.mempoolSequence,
+      added: [],
+      removed: [],
+      mined: transactions.map(tx => tx.txid),
+      replaced: replacedTransactions,
+    };
+
     const responseCache = { ...this.socketData };
     function getCachedResponse(key, data): string {
       if (!responseCache[key]) {
@@ -1000,10 +1091,6 @@ class WebsocketHandler {
       return responseCache[key];
     }
 
-    if (memPool.isInSync()) {
-      this.mempoolSequence++;
-    }
-
     // TODO - Fix indentation after PR is merged
     for (const server of this.webSocketServers) {
     server.clients.forEach((client) => {
@@ -1185,6 +1272,14 @@ class WebsocketHandler {
         }
       }
 
+      if (client['track-mempool-txids']) {
+        response['mempool-txids'] = getCachedResponse('mempool-txids', mempoolDeltaTxids);
+      }
+
+      if (client['track-mempool']) {
+        response['mempool-transactions'] = getCachedResponse('mempool-transactions', mempoolDelta);
+      }
+
       if (Object.keys(response).length) {
         client.send(this.serializeResponse(response));
       }
diff --git a/backend/src/index.ts b/backend/src/index.ts
index b088155ea..df9f7dc65 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -131,6 +131,7 @@ class Server {
       })
       .use(express.urlencoded({ extended: true }))
       .use(express.text({ type: ['text/plain', 'application/base64'] }))
+      .use(express.json())
       ;
 
     if (config.DATABASE.ENABLED && config.FIAT_PRICE.ENABLED) {
diff --git a/backend/src/mempool.interfaces.ts b/backend/src/mempool.interfaces.ts
index 0b4b20e02..0fcddc45a 100644
--- a/backend/src/mempool.interfaces.ts
+++ b/backend/src/mempool.interfaces.ts
@@ -71,6 +71,22 @@ export interface MempoolBlockDelta {
   changed: MempoolDeltaChange[];
 }
 
+export interface MempoolDeltaTxids {
+  sequence: number,
+  added: string[];
+  removed: string[];
+  mined: string[];
+  replaced: { replaced: string, by: string }[];
+}
+
+export interface MempoolDelta {
+  sequence: number,
+  added: MempoolTransactionExtended[];
+  removed: string[];
+  mined: string[];
+  replaced: { replaced: string, by: TransactionExtended }[];
+}
+
 interface VinStrippedToScriptsig {
   scriptsig: string;
 }
diff --git a/docker/frontend/Dockerfile b/docker/frontend/Dockerfile
index 3a63107bf..bee617595 100644
--- a/docker/frontend/Dockerfile
+++ b/docker/frontend/Dockerfile
@@ -13,7 +13,7 @@ RUN npm install --omit=dev --omit=optional
 
 RUN npm run build
 
-FROM nginx:1.25.4-alpine
+FROM nginx:1.26.0-alpine
 
 WORKDIR /patch
 
diff --git a/frontend/angular.json b/frontend/angular.json
index 46cc3f667..190982225 100644
--- a/frontend/angular.json
+++ b/frontend/angular.json
@@ -181,6 +181,11 @@
                 "bundleName": "wiz",
                 "inject": false
               },
+              {
+                "input": "src/theme-bukele.scss",
+                "bundleName": "bukele",
+                "inject": false
+              },
               "node_modules/@fortawesome/fontawesome-svg-core/styles.css"
             ],
             "vendorChunk": true,
diff --git a/frontend/custom-sv-config.json b/frontend/custom-sv-config.json
index 0f82a9da2..9da0d27df 100644
--- a/frontend/custom-sv-config.json
+++ b/frontend/custom-sv-config.json
@@ -1,12 +1,12 @@
 {
-  "theme": "contrast",
+  "theme": "bukele",
   "enterprise": "onbtc",
   "branding": {
     "name": "onbtc",
-    "title": "Oficina Nacional del Bitcoin",
+    "title": "Bitcoin Office",
     "site_id": 19,
-    "header_img": "/resources/onbtc.svg",
-    "img": "/resources/elsalvador.svg",
+    "header_img": "/resources/onbtclogo.svg",
+    "footer_img": "/resources/onbtclogo.svg",
     "rounded_corner": true
   },
   "dashboard": {
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 5e0702a01..199525a1a 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -32,10 +32,9 @@
         "bootstrap": "~4.6.2",
         "browserify": "^17.0.0",
         "clipboard": "^2.0.11",
-        "cypress": "^13.8.0",
         "domino": "^2.1.6",
         "echarts": "~5.5.0",
-        "esbuild": "^0.20.2",
+        "esbuild": "^0.21.1",
         "lightweight-charts": "~3.8.0",
         "ngx-echarts": "~17.1.0",
         "ngx-infinite-scroll": "^17.0.0",
@@ -3197,9 +3196,9 @@
       }
     },
     "node_modules/@esbuild/aix-ppc64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.20.2.tgz",
-      "integrity": "sha512-D+EBOJHXdNZcLJRBkhENNG8Wji2kgc9AZ9KiPr1JuZjsNtyHzrsfLRrY0tk2H2aoFu6RANO1y1iPPUCDYWkb5g==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.21.1.tgz",
+      "integrity": "sha512-O7yppwipkXvnEPjzkSXJRk2g4bS8sUx9p9oXHq9MU/U7lxUzZVsnFZMDTmeeX9bfQxrFcvOacl/ENgOh0WP9pA==",
       "cpu": [
         "ppc64"
       ],
@@ -3212,9 +3211,9 @@
       }
     },
     "node_modules/@esbuild/android-arm": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.20.2.tgz",
-      "integrity": "sha512-t98Ra6pw2VaDhqNWO2Oph2LXbz/EJcnLmKLGBJwEwXX/JAN83Fym1rU8l0JUWK6HkIbWONCSSatf4sf2NBRx/w==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.21.1.tgz",
+      "integrity": "sha512-hh3jKWikdnTtHCglDAeVO3Oyh8MaH8xZUaWMiCCvJ9/c3NtPqZq+CACOlGTxhddypXhl+8B45SeceYBfB/e8Ow==",
       "cpu": [
         "arm"
       ],
@@ -3227,9 +3226,9 @@
       }
     },
     "node_modules/@esbuild/android-arm64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.20.2.tgz",
-      "integrity": "sha512-mRzjLacRtl/tWU0SvD8lUEwb61yP9cqQo6noDZP/O8VkwafSYwZ4yWy24kan8jE/IMERpYncRt2dw438LP3Xmg==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.21.1.tgz",
+      "integrity": "sha512-jXhccq6es+onw7x8MxoFnm820mz7sGa9J14kLADclmiEUH4fyj+FjR6t0M93RgtlI/awHWhtF0Wgfhqgf9gDZA==",
       "cpu": [
         "arm64"
       ],
@@ -3242,9 +3241,9 @@
       }
     },
     "node_modules/@esbuild/android-x64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.20.2.tgz",
-      "integrity": "sha512-btzExgV+/lMGDDa194CcUQm53ncxzeBrWJcncOBxuC6ndBkKxnHdFJn86mCIgTELsooUmwUm9FkhSp5HYu00Rg==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.21.1.tgz",
+      "integrity": "sha512-NPObtlBh4jQHE01gJeucqEhdoD/4ya2owSIS8lZYS58aR0x7oZo9lB2lVFxgTANSa5MGCBeoQtr+yA9oKCGPvA==",
       "cpu": [
         "x64"
       ],
@@ -3257,9 +3256,9 @@
       }
     },
     "node_modules/@esbuild/darwin-arm64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.20.2.tgz",
-      "integrity": "sha512-4J6IRT+10J3aJH3l1yzEg9y3wkTDgDk7TSDFX+wKFiWjqWp/iCfLIYzGyasx9l0SAFPT1HwSCR+0w/h1ES/MjA==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.21.1.tgz",
+      "integrity": "sha512-BLT7TDzqsVlQRmJfO/FirzKlzmDpBWwmCUlyggfzUwg1cAxVxeA4O6b1XkMInlxISdfPAOunV9zXjvh5x99Heg==",
       "cpu": [
         "arm64"
       ],
@@ -3272,9 +3271,9 @@
       }
     },
     "node_modules/@esbuild/darwin-x64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.20.2.tgz",
-      "integrity": "sha512-tBcXp9KNphnNH0dfhv8KYkZhjc+H3XBkF5DKtswJblV7KlT9EI2+jeA8DgBjp908WEuYll6pF+UStUCfEpdysA==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.21.1.tgz",
+      "integrity": "sha512-D3h3wBQmeS/vp93O4B+SWsXB8HvRDwMyhTNhBd8yMbh5wN/2pPWRW5o/hM3EKgk9bdKd9594lMGoTCTiglQGRQ==",
       "cpu": [
         "x64"
       ],
@@ -3287,9 +3286,9 @@
       }
     },
     "node_modules/@esbuild/freebsd-arm64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.20.2.tgz",
-      "integrity": "sha512-d3qI41G4SuLiCGCFGUrKsSeTXyWG6yem1KcGZVS+3FYlYhtNoNgYrWcvkOoaqMhwXSMrZRl69ArHsGJ9mYdbbw==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.21.1.tgz",
+      "integrity": "sha512-/uVdqqpNKXIxT6TyS/oSK4XE4xWOqp6fh4B5tgAwozkyWdylcX+W4YF2v6SKsL4wCQ5h1bnaSNjWPXG/2hp8AQ==",
       "cpu": [
         "arm64"
       ],
@@ -3302,9 +3301,9 @@
       }
     },
     "node_modules/@esbuild/freebsd-x64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.20.2.tgz",
-      "integrity": "sha512-d+DipyvHRuqEeM5zDivKV1KuXn9WeRX6vqSqIDgwIfPQtwMP4jaDsQsDncjTDDsExT4lR/91OLjRo8bmC1e+Cw==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.21.1.tgz",
+      "integrity": "sha512-paAkKN1n1jJitw+dAoR27TdCzxRl1FOEITx3h201R6NoXUojpMzgMLdkXVgCvaCSCqwYkeGLoe9UVNRDKSvQgw==",
       "cpu": [
         "x64"
       ],
@@ -3317,9 +3316,9 @@
       }
     },
     "node_modules/@esbuild/linux-arm": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm/-/linux-arm-0.20.2.tgz",
-      "integrity": "sha512-VhLPeR8HTMPccbuWWcEUD1Az68TqaTYyj6nfE4QByZIQEQVWBB8vup8PpR7y1QHL3CpcF6xd5WVBU/+SBEvGTg==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm/-/linux-arm-0.21.1.tgz",
+      "integrity": "sha512-tRHnxWJnvNnDpNVnsyDhr1DIQZUfCXlHSCDohbXFqmg9W4kKR7g8LmA3kzcwbuxbRMKeit8ladnCabU5f2traA==",
       "cpu": [
         "arm"
       ],
@@ -3332,9 +3331,9 @@
       }
     },
     "node_modules/@esbuild/linux-arm64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm64/-/linux-arm64-0.20.2.tgz",
-      "integrity": "sha512-9pb6rBjGvTFNira2FLIWqDk/uaf42sSyLE8j1rnUpuzsODBq7FvpwHYZxQ/It/8b+QOS1RYfqgGFNLRI+qlq2A==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm64/-/linux-arm64-0.21.1.tgz",
+      "integrity": "sha512-G65d08YoH00TL7Xg4LaL3gLV21bpoAhQ+r31NUu013YB7KK0fyXIt05VbsJtpqh/6wWxoLJZOvQHYnodRrnbUQ==",
       "cpu": [
         "arm64"
       ],
@@ -3347,9 +3346,9 @@
       }
     },
     "node_modules/@esbuild/linux-ia32": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-ia32/-/linux-ia32-0.20.2.tgz",
-      "integrity": "sha512-o10utieEkNPFDZFQm9CoP7Tvb33UutoJqg3qKf1PWVeeJhJw0Q347PxMvBgVVFgouYLGIhFYG0UGdBumROyiig==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-ia32/-/linux-ia32-0.21.1.tgz",
+      "integrity": "sha512-tt/54LqNNAqCz++QhxoqB9+XqdsaZOtFD/srEhHYwBd3ZUOepmR1Eeot8bS+Q7BiEvy9vvKbtpHf+r6q8hF5UA==",
       "cpu": [
         "ia32"
       ],
@@ -3362,9 +3361,9 @@
       }
     },
     "node_modules/@esbuild/linux-loong64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-loong64/-/linux-loong64-0.20.2.tgz",
-      "integrity": "sha512-PR7sp6R/UC4CFVomVINKJ80pMFlfDfMQMYynX7t1tNTeivQ6XdX5r2XovMmha/VjR1YN/HgHWsVcTRIMkymrgQ==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-loong64/-/linux-loong64-0.21.1.tgz",
+      "integrity": "sha512-MhNalK6r0nZD0q8VzUBPwheHzXPr9wronqmZrewLfP7ui9Fv1tdPmg6e7A8lmg0ziQCziSDHxh3cyRt4YMhGnQ==",
       "cpu": [
         "loong64"
       ],
@@ -3377,9 +3376,9 @@
       }
     },
     "node_modules/@esbuild/linux-mips64el": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-mips64el/-/linux-mips64el-0.20.2.tgz",
-      "integrity": "sha512-4BlTqeutE/KnOiTG5Y6Sb/Hw6hsBOZapOVF6njAESHInhlQAghVVZL1ZpIctBOoTFbQyGW+LsVYZ8lSSB3wkjA==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-mips64el/-/linux-mips64el-0.21.1.tgz",
+      "integrity": "sha512-YCKVY7Zen5rwZV+nZczOhFmHaeIxR4Zn3jcmNH53LbgF6IKRwmrMywqDrg4SiSNApEefkAbPSIzN39FC8VsxPg==",
       "cpu": [
         "mips64el"
       ],
@@ -3392,9 +3391,9 @@
       }
     },
     "node_modules/@esbuild/linux-ppc64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-ppc64/-/linux-ppc64-0.20.2.tgz",
-      "integrity": "sha512-rD3KsaDprDcfajSKdn25ooz5J5/fWBylaaXkuotBDGnMnDP1Uv5DLAN/45qfnf3JDYyJv/ytGHQaziHUdyzaAg==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-ppc64/-/linux-ppc64-0.21.1.tgz",
+      "integrity": "sha512-bw7bcQ+270IOzDV4mcsKAnDtAFqKO0jVv3IgRSd8iM0ac3L8amvCrujRVt1ajBTJcpDaFhIX+lCNRKteoDSLig==",
       "cpu": [
         "ppc64"
       ],
@@ -3407,9 +3406,9 @@
       }
     },
     "node_modules/@esbuild/linux-riscv64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-riscv64/-/linux-riscv64-0.20.2.tgz",
-      "integrity": "sha512-snwmBKacKmwTMmhLlz/3aH1Q9T8v45bKYGE3j26TsaOVtjIag4wLfWSiZykXzXuE1kbCE+zJRmwp+ZbIHinnVg==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-riscv64/-/linux-riscv64-0.21.1.tgz",
+      "integrity": "sha512-ARmDRNkcOGOm1AqUBSwRVDfDeD9hGYRfkudP2QdoonBz1ucWVnfBPfy7H4JPI14eYtZruRSczJxyu7SRYDVOcg==",
       "cpu": [
         "riscv64"
       ],
@@ -3422,9 +3421,9 @@
       }
     },
     "node_modules/@esbuild/linux-s390x": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-s390x/-/linux-s390x-0.20.2.tgz",
-      "integrity": "sha512-wcWISOobRWNm3cezm5HOZcYz1sKoHLd8VL1dl309DiixxVFoFe/o8HnwuIwn6sXre88Nwj+VwZUvJf4AFxkyrQ==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-s390x/-/linux-s390x-0.21.1.tgz",
+      "integrity": "sha512-o73TcUNMuoTZlhwFdsgr8SfQtmMV58sbgq6gQq9G1xUiYnHMTmJbwq65RzMx89l0iya69lR4bxBgtWiiOyDQZA==",
       "cpu": [
         "s390x"
       ],
@@ -3437,9 +3436,9 @@
       }
     },
     "node_modules/@esbuild/linux-x64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-x64/-/linux-x64-0.20.2.tgz",
-      "integrity": "sha512-1MdwI6OOTsfQfek8sLwgyjOXAu+wKhLEoaOLTjbijk6E2WONYpH9ZU2mNtR+lZ2B4uwr+usqGuVfFT9tMtGvGw==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-x64/-/linux-x64-0.21.1.tgz",
+      "integrity": "sha512-da4/1mBJwwgJkbj4fMH7SOXq2zapgTo0LKXX1VUZ0Dxr+e8N0WbS80nSZ5+zf3lvpf8qxrkZdqkOqFfm57gXwA==",
       "cpu": [
         "x64"
       ],
@@ -3452,9 +3451,9 @@
       }
     },
     "node_modules/@esbuild/netbsd-x64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/netbsd-x64/-/netbsd-x64-0.20.2.tgz",
-      "integrity": "sha512-K8/DhBxcVQkzYc43yJXDSyjlFeHQJBiowJ0uVL6Tor3jGQfSGHNNJcWxNbOI8v5k82prYqzPuwkzHt3J1T1iZQ==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/netbsd-x64/-/netbsd-x64-0.21.1.tgz",
+      "integrity": "sha512-CPWs0HTFe5woTJN5eKPvgraUoRHrCtzlYIAv9wBC+FAyagBSaf+UdZrjwYyTGnwPGkThV4OCI7XibZOnPvONVw==",
       "cpu": [
         "x64"
       ],
@@ -3467,9 +3466,9 @@
       }
     },
     "node_modules/@esbuild/openbsd-x64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/openbsd-x64/-/openbsd-x64-0.20.2.tgz",
-      "integrity": "sha512-eMpKlV0SThJmmJgiVyN9jTPJ2VBPquf6Kt/nAoo6DgHAoN57K15ZghiHaMvqjCye/uU4X5u3YSMgVBI1h3vKrQ==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/openbsd-x64/-/openbsd-x64-0.21.1.tgz",
+      "integrity": "sha512-xxhTm5QtzNLc24R0hEkcH+zCx/o49AsdFZ0Cy5zSd/5tOj4X2g3/2AJB625NoadUuc4A8B3TenLJoYdWYOYCew==",
       "cpu": [
         "x64"
       ],
@@ -3482,9 +3481,9 @@
       }
     },
     "node_modules/@esbuild/sunos-x64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/sunos-x64/-/sunos-x64-0.20.2.tgz",
-      "integrity": "sha512-2UyFtRC6cXLyejf/YEld4Hajo7UHILetzE1vsRcGL3earZEW77JxrFjH4Ez2qaTiEfMgAXxfAZCm1fvM/G/o8w==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/sunos-x64/-/sunos-x64-0.21.1.tgz",
+      "integrity": "sha512-CWibXszpWys1pYmbr9UiKAkX6x+Sxw8HWtw1dRESK1dLW5fFJ6rMDVw0o8MbadusvVQx1a8xuOxnHXT941Hp1A==",
       "cpu": [
         "x64"
       ],
@@ -3497,9 +3496,9 @@
       }
     },
     "node_modules/@esbuild/win32-arm64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/win32-arm64/-/win32-arm64-0.20.2.tgz",
-      "integrity": "sha512-GRibxoawM9ZCnDxnP3usoUDO9vUkpAxIIZ6GQI+IlVmr5kP3zUq+l17xELTHMWTWzjxa2guPNyrpq1GWmPvcGQ==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/win32-arm64/-/win32-arm64-0.21.1.tgz",
+      "integrity": "sha512-jb5B4k+xkytGbGUS4T+Z89cQJ9DJ4lozGRSV+hhfmCPpfJ3880O31Q1srPCimm+V6UCbnigqD10EgDNgjvjerQ==",
       "cpu": [
         "arm64"
       ],
@@ -3512,9 +3511,9 @@
       }
     },
     "node_modules/@esbuild/win32-ia32": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/win32-ia32/-/win32-ia32-0.20.2.tgz",
-      "integrity": "sha512-HfLOfn9YWmkSKRQqovpnITazdtquEW8/SoHW7pWpuEeguaZI4QnCRW6b+oZTztdBnZOS2hqJ6im/D5cPzBTTlQ==",
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+      "integrity": "sha512-PgyFvjJhXqHn1uxPhyN1wZ6dIomKjiLUQh1LjFvjiV1JmnkZ/oMPrfeEAZg5R/1ftz4LZWZr02kefNIQ5SKREQ==",
       "optional": true
     },
     "@esbuild/win32-x64": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/win32-x64/-/win32-x64-0.20.2.tgz",
-      "integrity": "sha512-N49X4lJX27+l9jbLKSqZ6bKNjzQvHaT8IIFUy+YIqmXQdjYCToGWwOItDrfby14c78aDd5NHQl29xingXfCdLQ==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@esbuild/win32-x64/-/win32-x64-0.21.1.tgz",
+      "integrity": "sha512-W9NttRZQR5ehAiqHGDnvfDaGmQOm6Fi4vSlce8mjM75x//XKuVAByohlEX6N17yZnVXxQFuh4fDRunP8ca6bfA==",
       "optional": true
     },
     "@eslint-community/eslint-utils": {
@@ -25032,33 +25031,33 @@
       }
     },
     "esbuild": {
-      "version": "0.20.2",
-      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.20.2.tgz",
-      "integrity": "sha512-WdOOppmUNU+IbZ0PaDiTst80zjnrOkyJNHoKupIcVyU8Lvla3Ugx94VzkQ32Ijqd7UhHJy75gNWDMUekcrSJ6g==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.21.1.tgz",
+      "integrity": "sha512-GPqx+FX7mdqulCeQ4TsGZQ3djBJkx5k7zBGtqt9ycVlWNg8llJ4RO9n2vciu8BN2zAEs6lPbPl0asZsAh7oWzg==",
       "requires": {
-        "@esbuild/aix-ppc64": "0.20.2",
-        "@esbuild/android-arm": "0.20.2",
-        "@esbuild/android-arm64": "0.20.2",
-        "@esbuild/android-x64": "0.20.2",
-        "@esbuild/darwin-arm64": "0.20.2",
-        "@esbuild/darwin-x64": "0.20.2",
-        "@esbuild/freebsd-arm64": "0.20.2",
-        "@esbuild/freebsd-x64": "0.20.2",
-        "@esbuild/linux-arm": "0.20.2",
-        "@esbuild/linux-arm64": "0.20.2",
-        "@esbuild/linux-ia32": "0.20.2",
-        "@esbuild/linux-loong64": "0.20.2",
-        "@esbuild/linux-mips64el": "0.20.2",
-        "@esbuild/linux-ppc64": "0.20.2",
-        "@esbuild/linux-riscv64": "0.20.2",
-        "@esbuild/linux-s390x": "0.20.2",
-        "@esbuild/linux-x64": "0.20.2",
-        "@esbuild/netbsd-x64": "0.20.2",
-        "@esbuild/openbsd-x64": "0.20.2",
-        "@esbuild/sunos-x64": "0.20.2",
-        "@esbuild/win32-arm64": "0.20.2",
-        "@esbuild/win32-ia32": "0.20.2",
-        "@esbuild/win32-x64": "0.20.2"
+        "@esbuild/aix-ppc64": "0.21.1",
+        "@esbuild/android-arm": "0.21.1",
+        "@esbuild/android-arm64": "0.21.1",
+        "@esbuild/android-x64": "0.21.1",
+        "@esbuild/darwin-arm64": "0.21.1",
+        "@esbuild/darwin-x64": "0.21.1",
+        "@esbuild/freebsd-arm64": "0.21.1",
+        "@esbuild/freebsd-x64": "0.21.1",
+        "@esbuild/linux-arm": "0.21.1",
+        "@esbuild/linux-arm64": "0.21.1",
+        "@esbuild/linux-ia32": "0.21.1",
+        "@esbuild/linux-loong64": "0.21.1",
+        "@esbuild/linux-mips64el": "0.21.1",
+        "@esbuild/linux-ppc64": "0.21.1",
+        "@esbuild/linux-riscv64": "0.21.1",
+        "@esbuild/linux-s390x": "0.21.1",
+        "@esbuild/linux-x64": "0.21.1",
+        "@esbuild/netbsd-x64": "0.21.1",
+        "@esbuild/openbsd-x64": "0.21.1",
+        "@esbuild/sunos-x64": "0.21.1",
+        "@esbuild/win32-arm64": "0.21.1",
+        "@esbuild/win32-ia32": "0.21.1",
+        "@esbuild/win32-x64": "0.21.1"
       }
     },
     "esbuild-wasm": {
diff --git a/frontend/package.json b/frontend/package.json
index adc33cb00..f03252032 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -92,7 +92,7 @@
     "ngx-infinite-scroll": "^17.0.0",
     "qrcode": "1.5.1",
     "rxjs": "~7.8.1",
-    "esbuild": "^0.20.2",
+    "esbuild": "^0.21.1",
     "tinyify": "^4.0.0",
     "tlite": "^0.1.9",
     "tslib": "~2.6.0",
diff --git a/frontend/src/app/app-routing.module.ts b/frontend/src/app/app-routing.module.ts
index 7a23e7556..5262a431a 100644
--- a/frontend/src/app/app-routing.module.ts
+++ b/frontend/src/app/app-routing.module.ts
@@ -53,6 +53,44 @@ let routes: Routes = [
       },
     ]
   },
+  {
+    path: 'testnet4',
+    children: [
+      {
+        path: '',
+        pathMatch: 'full',
+        loadChildren: () => import('./bitcoin-graphs.module').then(m => m.BitcoinGraphsModule),
+        data: { preload: true },
+      },
+      {
+        path: '',
+        loadChildren: () => import('./master-page.module').then(m => m.MasterPageModule),
+        data: { preload: true },
+      },
+      {
+        path: 'wallet',
+        children: [],
+        component: AddressGroupComponent,
+        data: {
+          networkSpecific: true,
+        }
+      },
+      {
+        path: 'status',
+        data: { networks: ['bitcoin', 'liquid'] },
+        component: StatusViewComponent
+      },
+      {
+        path: '',
+        loadChildren: () => import('./bitcoin-graphs.module').then(m => m.BitcoinGraphsModule),
+        data: { preload: true },
+      },
+      {
+        path: '**',
+        redirectTo: '/testnet4'
+      },
+    ]
+  },
   {
     path: 'signet',
     children: [
diff --git a/frontend/src/app/app.constants.ts b/frontend/src/app/app.constants.ts
index bd81d02c0..aaa53b8ba 100644
--- a/frontend/src/app/app.constants.ts
+++ b/frontend/src/app/app.constants.ts
@@ -189,22 +189,22 @@ export const specialBlocks = {
   '0': {
     labelEvent: 'Genesis',
     labelEventCompleted: 'The Genesis of Bitcoin',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '210000': {
     labelEvent: 'Bitcoin\'s 1st Halving',
     labelEventCompleted: 'Block Subsidy has halved to 25 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '420000': {
     labelEvent: 'Bitcoin\'s 2nd Halving',
     labelEventCompleted: 'Block Subsidy has halved to 12.5 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '630000': {
     labelEvent: 'Bitcoin\'s 3rd Halving',
     labelEventCompleted: 'Block Subsidy has halved to 6.25 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '709632': {
     labelEvent: 'Taproot 🌱 activation',
@@ -214,62 +214,62 @@ export const specialBlocks = {
   '840000': {
     labelEvent: 'Bitcoin\'s 4th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 3.125 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '1050000': {
     labelEvent: 'Bitcoin\'s 5th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 1.5625 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '1260000': {
     labelEvent: 'Bitcoin\'s 6th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 0.78125 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '1470000': {
     labelEvent: 'Bitcoin\'s 7th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 0.390625 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '1680000': {
     labelEvent: 'Bitcoin\'s 8th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 0.1953125 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '1890000': {
     labelEvent: 'Bitcoin\'s 9th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 0.09765625 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '2100000': {
     labelEvent: 'Bitcoin\'s 10th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 0.04882812 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '2310000': {
     labelEvent: 'Bitcoin\'s 11th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 0.02441406 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '2520000': {
     labelEvent: 'Bitcoin\'s 12th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 0.01220703 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '2730000': {
     labelEvent: 'Bitcoin\'s 13th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 0.00610351 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '2940000': {
     labelEvent: 'Bitcoin\'s 14th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 0.00305175 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   },
   '3150000': {
     labelEvent: 'Bitcoin\'s 15th Halving',
     labelEventCompleted: 'Block Subsidy has halved to 0.00152587 BTC per block',
-    networks: ['mainnet', 'testnet'],
+    networks: ['mainnet', 'testnet', 'testnet4'],
   }
 };
 
diff --git a/frontend/src/app/bitcoin.utils.ts b/frontend/src/app/bitcoin.utils.ts
index d5b5122fa..b9f4f39e1 100644
--- a/frontend/src/app/bitcoin.utils.ts
+++ b/frontend/src/app/bitcoin.utils.ts
@@ -266,6 +266,11 @@ const featureActivation = {
     segwit: 872730,
     taproot: 2032291,
   },
+  testnet4: {
+    rbf: 0,
+    segwit: 0,
+    taproot: 0,
+  },
   signet: {
     rbf: 0,
     segwit: 0,
diff --git a/frontend/src/app/components/acceleration/acceleration-fees-graph/acceleration-fees-graph.component.scss b/frontend/src/app/components/acceleration/acceleration-fees-graph/acceleration-fees-graph.component.scss
index 96273dead..984bc2b4c 100644
--- a/frontend/src/app/components/acceleration/acceleration-fees-graph/acceleration-fees-graph.component.scss
+++ b/frontend/src/app/components/acceleration/acceleration-fees-graph/acceleration-fees-graph.component.scss
@@ -11,7 +11,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/components/acceleration/accelerations-list/accelerations-list.component.ts b/frontend/src/app/components/acceleration/accelerations-list/accelerations-list.component.ts
index f2c082fc8..237b14317 100644
--- a/frontend/src/app/components/acceleration/accelerations-list/accelerations-list.component.ts
+++ b/frontend/src/app/components/acceleration/accelerations-list/accelerations-list.component.ts
@@ -1,5 +1,5 @@
-import { Component, OnInit, ChangeDetectionStrategy, Input, ChangeDetectorRef } from '@angular/core';
-import { combineLatest, BehaviorSubject, Observable, catchError, of, switchMap, tap } from 'rxjs';
+import { Component, OnInit, ChangeDetectionStrategy, Input, ChangeDetectorRef, OnDestroy } from '@angular/core';
+import { BehaviorSubject, Observable, catchError, of, switchMap, tap } from 'rxjs';
 import { Acceleration, BlockExtended } from '../../../interfaces/node-api.interface';
 import { StateService } from '../../../services/state.service';
 import { WebsocketService } from '../../../services/websocket.service';
@@ -11,7 +11,7 @@ import { ServicesApiServices } from '../../../services/services-api.service';
   styleUrls: ['./accelerations-list.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class AccelerationsListComponent implements OnInit {
+export class AccelerationsListComponent implements OnInit, OnDestroy {
   @Input() widget: boolean = false;
   @Input() pending: boolean = false;
   @Input() accelerations$: Observable<Acceleration[]>;
@@ -44,7 +44,10 @@ export class AccelerationsListComponent implements OnInit {
     
     this.accelerationList$ = this.pageSubject.pipe(
       switchMap((page) => {
-        const accelerationObservable$ = this.accelerations$ || (this.pending ? this.servicesApiService.getAccelerations$() : this.servicesApiService.getAccelerationHistoryObserveResponse$({ page: page }));
+        const accelerationObservable$ = this.accelerations$ || (this.pending ? this.stateService.liveAccelerations$ : this.servicesApiService.getAccelerationHistoryObserveResponse$({ page: page }));
+        if (!this.accelerations$ && this.pending) {
+          this.websocketService.ensureTrackAccelerations();
+        }
         return accelerationObservable$.pipe(
           switchMap(response => {
             let accelerations = response;
@@ -85,4 +88,8 @@ export class AccelerationsListComponent implements OnInit {
   trackByBlock(index: number, block: BlockExtended): number {
     return block.height;
   }
+
+  ngOnDestroy(): void {
+    this.websocketService.stopTrackAccelerations();
+  }
 }
\ No newline at end of file
diff --git a/frontend/src/app/components/acceleration/accelerator-dashboard/accelerator-dashboard.component.scss b/frontend/src/app/components/acceleration/accelerator-dashboard/accelerator-dashboard.component.scss
index 563e189cf..e6763f60a 100644
--- a/frontend/src/app/components/acceleration/accelerator-dashboard/accelerator-dashboard.component.scss
+++ b/frontend/src/app/components/acceleration/accelerator-dashboard/accelerator-dashboard.component.scss
@@ -60,7 +60,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/components/acceleration/accelerator-dashboard/accelerator-dashboard.component.ts b/frontend/src/app/components/acceleration/accelerator-dashboard/accelerator-dashboard.component.ts
index dc53d8f95..5f9017bbd 100644
--- a/frontend/src/app/components/acceleration/accelerator-dashboard/accelerator-dashboard.component.ts
+++ b/frontend/src/app/components/acceleration/accelerator-dashboard/accelerator-dashboard.component.ts
@@ -1,10 +1,10 @@
-import { ChangeDetectionStrategy, Component, HostListener, Inject, OnInit, PLATFORM_ID } from '@angular/core';
+import { ChangeDetectionStrategy, Component, HostListener, Inject, OnDestroy, OnInit, PLATFORM_ID } from '@angular/core';
 import { SeoService } from '../../../services/seo.service';
 import { OpenGraphService } from '../../../services/opengraph.service';
 import { WebsocketService } from '../../../services/websocket.service';
 import { Acceleration, BlockExtended } from '../../../interfaces/node-api.interface';
 import { StateService } from '../../../services/state.service';
-import { Observable, catchError, combineLatest, distinctUntilChanged, interval, map, of, share, startWith, switchMap, tap } from 'rxjs';
+import { Observable, Subscription, catchError, combineLatest, distinctUntilChanged, map, of, share, switchMap, tap } from 'rxjs';
 import { Color } from '../../block-overview-graph/sprite-types';
 import { hexToColor } from '../../block-overview-graph/utils';
 import TxView from '../../block-overview-graph/tx-view';
@@ -28,7 +28,7 @@ interface AccelerationBlock extends BlockExtended {
   styleUrls: ['./accelerator-dashboard.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class AcceleratorDashboardComponent implements OnInit {
+export class AcceleratorDashboardComponent implements OnInit, OnDestroy {
   blocks$: Observable<AccelerationBlock[]>;
   accelerations$: Observable<Acceleration[]>;
   pendingAccelerations$: Observable<Acceleration[]>;
@@ -39,6 +39,8 @@ export class AcceleratorDashboardComponent implements OnInit {
   firstLoad = true;
   timespan: '3d' | '1w' | '1m' = '1w';
 
+  accelerationDeltaSubscription: Subscription;
+
   graphHeight: number = 300;
   theme: ThemeService;
 
@@ -59,27 +61,28 @@ export class AcceleratorDashboardComponent implements OnInit {
   ngOnInit(): void {
     this.onResize();
     this.websocketService.want(['blocks', 'mempool-blocks', 'stats']);
+    this.websocketService.startTrackAccelerations();
 
-    this.pendingAccelerations$ = (this.stateService.isBrowser ? interval(30000) : of(null)).pipe(
-      startWith(true),
-      switchMap(() => {
-        return this.serviceApiServices.getAccelerations$().pipe(
-          catchError(() => {
-            return of([]);
-          }),
-        );
-      }),
-      tap(accelerations => {
-        if (!this.firstLoad && accelerations.some(acc => !this.seen.has(acc.txid))) {
-          this.audioService.playSound('bright-harmony');
-        }
-        for(const acc of accelerations) {
-          this.seen.add(acc.txid);
-        }
-        this.firstLoad = false;
-      }),
+    this.pendingAccelerations$ = this.stateService.liveAccelerations$.pipe(
       share(),
     );
+    this.accelerationDeltaSubscription = this.stateService.accelerations$.subscribe((delta) => {
+      if (!delta.reset) {
+        let hasNewAcceleration = false;
+        for (const acc of delta.added) {
+          if (!this.seen.has(acc.txid)) {
+            hasNewAcceleration = true;
+          }
+          this.seen.add(acc.txid);
+        }
+        for (const txid of delta.removed) {
+          this.seen.delete(txid);
+        }
+        if (hasNewAcceleration) {
+          this.audioService.playSound('bright-harmony');
+        }
+      }
+    });
 
     this.accelerations$ = this.stateService.chainTip$.pipe(
       distinctUntilChanged(),
@@ -145,7 +148,7 @@ export class AcceleratorDashboardComponent implements OnInit {
     } else {
       const rate = tx.fee / tx.vsize; // color by simple single-tx fee rate
       const feeLevelIndex = feeLevels.findIndex((feeLvl) => Math.max(1, rate) < feeLvl) - 1;
-      return this.theme.theme === 'contrast' ? contrastColors[feeLevelIndex] || contrastColors[contrastColors.length - 1] : normalColors[feeLevelIndex] || normalColors[normalColors.length - 1];
+      return this.theme.theme === 'contrast' || this.theme.theme === 'bukele' ? contrastColors[feeLevelIndex] || contrastColors[contrastColors.length - 1] : normalColors[feeLevelIndex] || normalColors[normalColors.length - 1];
     }
   }
 
@@ -154,6 +157,11 @@ export class AcceleratorDashboardComponent implements OnInit {
     return false;
   }
 
+  ngOnDestroy(): void {
+    this.accelerationDeltaSubscription.unsubscribe();
+    this.websocketService.stopTrackAccelerations();
+  }
+
   @HostListener('window:resize', ['$event'])
   onResize(): void {
     if (window.innerWidth >= 992) {
diff --git a/frontend/src/app/components/acceleration/pending-stats/pending-stats.component.ts b/frontend/src/app/components/acceleration/pending-stats/pending-stats.component.ts
index ed7061156..568e60d7e 100644
--- a/frontend/src/app/components/acceleration/pending-stats/pending-stats.component.ts
+++ b/frontend/src/app/components/acceleration/pending-stats/pending-stats.component.ts
@@ -2,7 +2,8 @@ import { ChangeDetectionStrategy, Component, Input, OnInit } from '@angular/core
 import { Observable, of } from 'rxjs';
 import { switchMap } from 'rxjs/operators';
 import { Acceleration } from '../../../interfaces/node-api.interface';
-import { ServicesApiServices } from '../../../services/services-api.service';
+import { StateService } from '../../../services/state.service';
+import { WebsocketService } from '../../../services/websocket.service';
 
 @Component({
   selector: 'app-pending-stats',
@@ -15,11 +16,12 @@ export class PendingStatsComponent implements OnInit {
   public accelerationStats$: Observable<any>;
 
   constructor(
-    private servicesApiService: ServicesApiServices,
+    private stateService: StateService,
+    private websocketService: WebsocketService,
   ) { }
 
   ngOnInit(): void {
-    this.accelerationStats$ = (this.accelerations$ || this.servicesApiService.getAccelerations$()).pipe(
+    this.accelerationStats$ = (this.accelerations$ || this.stateService.liveAccelerations$).pipe(
       switchMap(accelerations => {
         let totalAccelerations = 0;
         let totalFeeDelta = 0;
diff --git a/frontend/src/app/components/address-graph/address-graph.component.html b/frontend/src/app/components/address-graph/address-graph.component.html
index df4cdf330..32e16913a 100644
--- a/frontend/src/app/components/address-graph/address-graph.component.html
+++ b/frontend/src/app/components/address-graph/address-graph.component.html
@@ -1,12 +1,6 @@
 <app-indexing-progress *ngIf="!widget"></app-indexing-progress>
 
 <div [class.full-container]="!widget">
-  <div *ngIf="!widget" class="card-header mb-0 mb-md-2">
-    <div class="d-flex d-md-block align-items-baseline">
-      <span i18n="address.balance-history">Balance History</span>
-    </div>  
-  </div>
-
   <ng-container *ngIf="!error">
     <div [class]="!widget ? 'chart' : 'chart-widget'" *browserOnly [style]="{ height: widget ? ((height + 20) + 'px') : null}" echarts [initOpts]="chartInitOptions" [options]="chartOptions"
       (chartInit)="onChartInit($event)">
diff --git a/frontend/src/app/components/address-graph/address-graph.component.scss b/frontend/src/app/components/address-graph/address-graph.component.scss
index a118549fb..62393644b 100644
--- a/frontend/src/app/components/address-graph/address-graph.component.scss
+++ b/frontend/src/app/components/address-graph/address-graph.component.scss
@@ -11,7 +11,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
@@ -45,23 +46,8 @@
   display: flex;
   flex: 1;
   width: 100%;
-  padding-bottom: 20px;
+  padding-bottom: 10px;
   padding-right: 10px;
-  @media (max-width: 992px) {
-    padding-bottom: 25px;
-  }
-  @media (max-width: 829px) {
-    padding-bottom: 50px;
-  }
-  @media (max-width: 767px) {
-    padding-bottom: 25px;
-  }
-  @media (max-width: 629px) {
-    padding-bottom: 55px;
-  }
-  @media (max-width: 567px) {
-    padding-bottom: 55px;
-  }
 }
 .chart-widget {
   width: 100%;
diff --git a/frontend/src/app/components/address-graph/address-graph.component.ts b/frontend/src/app/components/address-graph/address-graph.component.ts
index 26a1bd408..842e96cdd 100644
--- a/frontend/src/app/components/address-graph/address-graph.component.ts
+++ b/frontend/src/app/components/address-graph/address-graph.component.ts
@@ -1,6 +1,6 @@
-import { ChangeDetectionStrategy, ChangeDetectorRef, Component, Inject, Input, LOCALE_ID, OnChanges, SimpleChanges } from '@angular/core';
+import { ChangeDetectionStrategy, ChangeDetectorRef, Component, Inject, Input, LOCALE_ID, OnChanges, OnDestroy, SimpleChanges } from '@angular/core';
 import { echarts, EChartsOption } from '../../graphs/echarts';
-import { Observable, of } from 'rxjs';
+import { BehaviorSubject, Observable, Subscription, combineLatest, of } from 'rxjs';
 import { catchError } from 'rxjs/operators';
 import { AddressTxSummary, ChainStats } from '../../interfaces/electrs.interface';
 import { ElectrsApiService } from '../../services/electrs-api.service';
@@ -32,7 +32,7 @@ const periodSeconds = {
   `],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class AddressGraphComponent implements OnChanges {
+export class AddressGraphComponent implements OnChanges, OnDestroy {
   @Input() address: string;
   @Input() isPubkey: boolean = false;
   @Input() stats: ChainStats;
@@ -46,6 +46,9 @@ export class AddressGraphComponent implements OnChanges {
   data: any[] = [];
   hoverData: any[] = [];
 
+  subscription: Subscription;
+  redraw$: BehaviorSubject<boolean> = new BehaviorSubject(false);
+
   chartOptions: EChartsOption = {};
   chartInitOptions = {
     renderer: 'svg',
@@ -70,24 +73,38 @@ export class AddressGraphComponent implements OnChanges {
     if (!this.address || !this.stats) {
       return;
     }
-    (this.addressSummary$ || (this.isPubkey
-      ? this.electrsApiService.getScriptHashSummary$((this.address.length === 66 ? '21' : '41') + this.address + 'ac')
-      : this.electrsApiService.getAddressSummary$(this.address)).pipe(
-      catchError(e => {
-        this.error = `Failed to fetch address balance history: ${e?.status || ''} ${e?.statusText || 'unknown error'}`;
-        return of(null);
-      }),
-    )).subscribe(addressSummary => {
-      if (addressSummary) {
-        this.error = null;
-        this.prepareChartOptions(addressSummary);
+    if (changes.address || changes.isPubkey || changes.addressSummary$ || changes.stats) {
+      if (this.subscription) {
+        this.subscription.unsubscribe();
       }
-      this.isLoading = false;
-      this.cd.markForCheck();
-    });
+      this.subscription = combineLatest([
+        this.redraw$,
+        (this.addressSummary$ || (this.isPubkey
+          ? this.electrsApiService.getScriptHashSummary$((this.address.length === 66 ? '21' : '41') + this.address + 'ac')
+          : this.electrsApiService.getAddressSummary$(this.address)).pipe(
+          catchError(e => {
+            this.error = `Failed to fetch address balance history: ${e?.status || ''} ${e?.statusText || 'unknown error'}`;
+            return of(null);
+          }),
+        ))
+      ]).subscribe(([redraw, addressSummary]) => {
+        if (addressSummary) {
+          this.error = null;
+          this.prepareChartOptions(addressSummary);
+        }
+        this.isLoading = false;
+        this.cd.markForCheck();
+      });
+    } else {
+      // re-trigger subscription
+      this.redraw$.next(true);
+    }
   }
 
   prepareChartOptions(summary): void {
+    if (!summary || !this.stats) {
+      return;
+    }
     let total = (this.stats.funded_txo_sum - this.stats.spent_txo_sum);
     this.data = summary.map(d => {
       const balance = total;
@@ -104,8 +121,8 @@ export class AddressGraphComponent implements OnChanges {
       );
     }
 
-    const maxValue = this.data.reduce((acc, d) => Math.max(acc, Math.abs(d[1] || d.value[1])), 0);
-    const minValue = this.data.reduce((acc, d) => Math.min(acc, Math.abs(d[1] || d.value[1])), maxValue);
+    const maxValue = this.data.reduce((acc, d) => Math.max(acc, Math.abs(d[1] ?? d.value[1])), 0);
+    const minValue = this.data.reduce((acc, d) => Math.min(acc, Math.abs(d[1] ?? d.value[1])), maxValue);
 
     this.chartOptions = {
       color: [
@@ -230,6 +247,12 @@ export class AddressGraphComponent implements OnChanges {
     this.chartInstance.on('click', 'series', this.onChartClick.bind(this));
   }
 
+  ngOnDestroy(): void {
+    if (this.subscription) {
+      this.subscription.unsubscribe();
+    }
+  }
+
   isMobile() {
     return (window.innerWidth <= 767.98);
   }
diff --git a/frontend/src/app/components/address/address-preview.component.scss b/frontend/src/app/components/address/address-preview.component.scss
index 623d72db2..f03e13541 100644
--- a/frontend/src/app/components/address/address-preview.component.scss
+++ b/frontend/src/app/components/address/address-preview.component.scss
@@ -3,7 +3,7 @@
 }
 
 .qr-wrapper {
-  background-color: var(--fg);
+  background-color: #fff;
   padding: 10px;
   padding-bottom: 5px;
   display: inline-block;
diff --git a/frontend/src/app/components/address/address.component.html b/frontend/src/app/components/address/address.component.html
index 531b97464..661e84869 100644
--- a/frontend/src/app/components/address/address.component.html
+++ b/frontend/src/app/components/address/address.component.html
@@ -53,10 +53,20 @@
 
     <ng-container *ngIf="(stateService.backend$ | async) === 'esplora' && address && transactions && transactions.length > 2">
       <br>
+      <div class="title-tx">
+        <h2 class="text-left" i18n="address.balance-history">Balance History</h2>
+      </div>
       <div class="box">
+        <div class="widget-toggler" *ngIf="showBalancePeriod()">
+          <a href="" (click)="setBalancePeriod('all')" class="toggler-option"
+            [ngClass]="{'inactive': balancePeriod === 'all'}"><small i18n="all">all</small></a>
+          <span style="color: var(--transparent-fg); font-size: 8px"> | </span>
+          <a href="" (click)="setBalancePeriod('1m')" class="toggler-option"
+            [ngClass]="{'inactive': balancePeriod === '1m'}"><small i18n="recent">recent</small></a>
+        </div>
         <div class="row">
           <div class="col-md">
-            <app-address-graph [address]="addressString" [isPubkey]="address?.is_pubkey" [stats]="address.chain_stats" />
+            <app-address-graph [address]="addressString" [isPubkey]="address?.is_pubkey" [stats]="address.chain_stats" [period]="balancePeriod" />
           </div>
         </div>
       </div>
diff --git a/frontend/src/app/components/address/address.component.scss b/frontend/src/app/components/address/address.component.scss
index 7107c73f2..da615376c 100644
--- a/frontend/src/app/components/address/address.component.scss
+++ b/frontend/src/app/components/address/address.component.scss
@@ -1,5 +1,5 @@
 .qr-wrapper {
-  background-color: var(--fg);
+  background-color: #fff;
   padding: 10px;
   padding-bottom: 5px;
   display: inline-block;
@@ -109,3 +109,19 @@ h1 {
     flex-grow: 0.5;
   }
 }
+
+.widget-toggler {
+  font-size: 12px;
+  position: absolute;
+  top: -20px;
+  right: 3px;
+  text-align: right;
+}
+
+.toggler-option {
+  text-decoration: none;
+}
+
+.inactive {
+  color: var(--transparent-fg);
+}
\ No newline at end of file
diff --git a/frontend/src/app/components/address/address.component.ts b/frontend/src/app/components/address/address.component.ts
index 95abe4ac1..19712a702 100644
--- a/frontend/src/app/components/address/address.component.ts
+++ b/frontend/src/app/components/address/address.component.ts
@@ -38,6 +38,8 @@ export class AddressComponent implements OnInit, OnDestroy {
   txCount = 0;
   received = 0;
   sent = 0;
+  now = Date.now() / 1000;
+  balancePeriod: 'all' | '1m' = 'all';
 
   private tempTransactions: Transaction[];
   private timeTxIndexes: number[];
@@ -174,6 +176,10 @@ export class AddressComponent implements OnInit, OnDestroy {
 
         this.transactions = this.tempTransactions;
         this.isLoadingTransactions = false;
+
+        if (!this.showBalancePeriod()) {
+          this.setBalancePeriod('all');
+        }
       },
       (error) => {
         console.log(error);
@@ -296,6 +302,18 @@ export class AddressComponent implements OnInit, OnDestroy {
     this.txCount = this.address.chain_stats.tx_count + this.address.mempool_stats.tx_count;
   }
 
+  setBalancePeriod(period: 'all' | '1m'): boolean {
+    this.balancePeriod = period;
+    return false;
+  }
+
+  showBalancePeriod(): boolean {
+    return this.transactions?.length && (
+      !this.transactions[0].status?.confirmed
+      || this.transactions[0].status.block_time > (this.now - (60 * 60 * 24 * 30))
+    );
+  }
+
   ngOnDestroy() {
     this.mainSubscription.unsubscribe();
     this.mempoolTxSubscription.unsubscribe();
diff --git a/frontend/src/app/components/amount/amount.component.html b/frontend/src/app/components/amount/amount.component.html
index f157d17d6..b38cf4c41 100644
--- a/frontend/src/app/components/amount/amount.component.html
+++ b/frontend/src/app/components/amount/amount.component.html
@@ -43,5 +43,6 @@
   <ng-template [ngIf]="network === 'liquid' && !forceBtc">L-</ng-template>
   <ng-template [ngIf]="network === 'liquidtestnet'">tL-</ng-template>
   <ng-template [ngIf]="network === 'testnet'">t</ng-template>
+  <ng-template [ngIf]="network === 'testnet4'">t</ng-template>
   <ng-template [ngIf]="network === 'signet'">s</ng-template>
 </ng-template>
diff --git a/frontend/src/app/components/asset/asset.component.scss b/frontend/src/app/components/asset/asset.component.scss
index 6f8bc0915..56b1d6258 100644
--- a/frontend/src/app/components/asset/asset.component.scss
+++ b/frontend/src/app/components/asset/asset.component.scss
@@ -1,5 +1,5 @@
 .qr-wrapper {
-  background-color: var(--fg);
+  background-color: #fff;
   padding: 10px;
   padding-bottom: 5px;
   display: inline-block;
diff --git a/frontend/src/app/components/block-fee-rates-graph/block-fee-rates-graph.component.scss b/frontend/src/app/components/block-fee-rates-graph/block-fee-rates-graph.component.scss
index ed531e63d..5d8c286d3 100644
--- a/frontend/src/app/components/block-fee-rates-graph/block-fee-rates-graph.component.scss
+++ b/frontend/src/app/components/block-fee-rates-graph/block-fee-rates-graph.component.scss
@@ -11,7 +11,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/components/block-fees-graph/block-fees-graph.component.scss b/frontend/src/app/components/block-fees-graph/block-fees-graph.component.scss
index b73d55685..ec3aeadc8 100644
--- a/frontend/src/app/components/block-fees-graph/block-fees-graph.component.scss
+++ b/frontend/src/app/components/block-fees-graph/block-fees-graph.component.scss
@@ -11,7 +11,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/components/block-health-graph/block-health-graph.component.scss b/frontend/src/app/components/block-health-graph/block-health-graph.component.scss
index 7b8154bae..992906e5c 100644
--- a/frontend/src/app/components/block-health-graph/block-health-graph.component.scss
+++ b/frontend/src/app/components/block-health-graph/block-health-graph.component.scss
@@ -11,7 +11,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts b/frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts
index 3fee3f901..6231ba70d 100644
--- a/frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts
+++ b/frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts
@@ -81,6 +81,20 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
   tooltipPosition: Position;
 
   readyNextFrame = false;
+  lastUpdate: number = 0;
+  pendingUpdate: {
+    count: number,
+    add: { [txid: string]: TransactionStripped },
+    remove: { [txid: string]: string },
+    change: { [txid: string]: { txid: string, rate: number | undefined, acc: boolean | undefined } },
+    direction?: string,
+  } = {
+    count: 0,
+    add: {},
+    remove: {},
+    change: {},
+    direction: 'left',
+  };
 
   searchText: string;
   searchSubscription: Subscription;
@@ -176,6 +190,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
   destroy(): void {
     if (this.scene) {
       this.scene.destroy();
+      this.clearUpdateQueue();
       this.start();
     }
   }
@@ -188,6 +203,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
     }
     this.filtersAvailable = filtersAvailable;
     if (this.scene) {
+      this.clearUpdateQueue();
       this.scene.setup(transactions);
       this.readyNextFrame = true;
       this.start();
@@ -197,6 +213,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
 
   enter(transactions: TransactionStripped[], direction: string): void {
     if (this.scene) {
+      this.clearUpdateQueue();
       this.scene.enter(transactions, direction);
       this.start();
       this.updateSearchHighlight();
@@ -205,6 +222,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
 
   exit(direction: string): void {
     if (this.scene) {
+      this.clearUpdateQueue();
       this.scene.exit(direction);
       this.start();
       this.updateSearchHighlight();
@@ -213,13 +231,67 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
 
   replace(transactions: TransactionStripped[], direction: string, sort: boolean = true, startTime?: number): void {
     if (this.scene) {
+      this.clearUpdateQueue();
       this.scene.replace(transactions || [], direction, sort, startTime);
       this.start();
       this.updateSearchHighlight();
     }
   }
 
+  // collates deferred updates into a set of consistent pending changes
+  queueUpdate(add: TransactionStripped[], remove: string[], change: { txid: string, rate: number | undefined, acc: boolean | undefined }[], direction: string = 'left'): void {
+    for (const tx of add) {
+      this.pendingUpdate.add[tx.txid] = tx;
+      delete this.pendingUpdate.remove[tx.txid];
+      delete this.pendingUpdate.change[tx.txid];
+    }
+    for (const txid of remove) {
+      delete this.pendingUpdate.add[txid];
+      this.pendingUpdate.remove[txid] = txid;
+      delete this.pendingUpdate.change[txid];
+    }
+    for (const tx of change) {
+      if (this.pendingUpdate.add[tx.txid]) {
+        this.pendingUpdate.add[tx.txid].rate = tx.rate;
+        this.pendingUpdate.add[tx.txid].acc = tx.acc;
+      } else {
+        this.pendingUpdate.change[tx.txid] = tx;
+      }
+    }
+    this.pendingUpdate.direction = direction;
+    this.pendingUpdate.count++;
+  }
+
+  deferredUpdate(add: TransactionStripped[], remove: string[], change: { txid: string, rate: number | undefined, acc: boolean | undefined }[], direction: string = 'left'): void {
+    this.queueUpdate(add, remove, change, direction);
+    this.applyQueuedUpdates();
+  }
+
+  applyQueuedUpdates(): void {
+    if (this.pendingUpdate.count && performance.now() > (this.lastUpdate + this.animationDuration)) {
+      this.applyUpdate(Object.values(this.pendingUpdate.add), Object.values(this.pendingUpdate.remove), Object.values(this.pendingUpdate.change), this.pendingUpdate.direction);
+      this.clearUpdateQueue();
+    }
+  }
+
+  clearUpdateQueue(): void {
+    this.pendingUpdate = {
+      count: 0,
+      add: {},
+      remove: {},
+      change: {},
+    };
+    this.lastUpdate = performance.now();
+  }
+
   update(add: TransactionStripped[], remove: string[], change: { txid: string, rate: number | undefined, acc: boolean | undefined }[], direction: string = 'left', resetLayout: boolean = false): void {
+    // merge any pending changes into this update
+    this.queueUpdate(add, remove, change);
+    this.applyUpdate(Object.values(this.pendingUpdate.add), Object.values(this.pendingUpdate.remove), Object.values(this.pendingUpdate.change), direction, resetLayout);
+    this.clearUpdateQueue();
+  }
+
+  applyUpdate(add: TransactionStripped[], remove: string[], change: { txid: string, rate: number | undefined, acc: boolean | undefined }[], direction: string = 'left', resetLayout: boolean = false): void {
     if (this.scene) {
       add = add.filter(tx => !this.scene.txs[tx.txid]);
       remove = remove.filter(txid => this.scene.txs[txid]);
@@ -230,6 +302,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
       }
       this.scene.update(add, remove, change, direction, resetLayout);
       this.start();
+      this.lastUpdate = performance.now();
       this.updateSearchHighlight();
     }
   }
@@ -370,6 +443,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
     if (!now) {
       now = performance.now();
     }
+    this.applyQueuedUpdates();
     // skip re-render if there's no change to the scene
     if (this.scene && this.gl) {
       /* SET UP SHADER UNIFORMS */
@@ -577,13 +651,13 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
   getFilterColorFunction(flags: bigint, gradient: 'fee' | 'age'): ((tx: TxView) => Color) {
     return (tx: TxView) => {
       if ((this.filterMode === 'and' && (tx.bigintFlags & flags) === flags) || (this.filterMode === 'or' && (flags === 0n || (tx.bigintFlags & flags) > 0n))) {
-        if (this.themeService.theme !== 'contrast') {
+        if (this.themeService.theme !== 'contrast' && this.themeService.theme !== 'bukele') {
           return (gradient === 'age') ? ageColorFunction(tx, defaultColors.fee, defaultAuditColors, this.relativeTime || (Date.now() / 1000)) : defaultColorFunction(tx, defaultColors.fee, defaultAuditColors, this.relativeTime || (Date.now() / 1000));
         } else {
           return (gradient === 'age') ? ageColorFunction(tx, contrastColors.fee, contrastAuditColors, this.relativeTime || (Date.now() / 1000)) : contrastColorFunction(tx, contrastColors.fee, contrastAuditColors, this.relativeTime || (Date.now() / 1000));
         }
       } else {
-        if (this.themeService.theme !== 'contrast') {
+        if (this.themeService.theme !== 'contrast' && this.themeService.theme !== 'bukele') {
           return (gradient === 'age') ? { r: 1, g: 1, b: 1, a: 0.05 } : defaultColorFunction(
             tx,
             defaultColors.unmatchedfee,
diff --git a/frontend/src/app/components/block-overview-graph/block-scene.ts b/frontend/src/app/components/block-overview-graph/block-scene.ts
index bef907a7a..c59fcb7d4 100644
--- a/frontend/src/app/components/block-overview-graph/block-scene.ts
+++ b/frontend/src/app/components/block-overview-graph/block-scene.ts
@@ -13,7 +13,7 @@ export default class BlockScene {
   theme: ThemeService;
   orientation: string;
   flip: boolean;
-  animationDuration: number = 900;
+  animationDuration: number = 1000;
   configAnimationOffset: number | null;
   animationOffset: number;
   highlightingEnabled: boolean;
@@ -69,7 +69,7 @@ export default class BlockScene {
   }
 
   setColorFunction(colorFunction: ((tx: TxView) => Color) | null): void {
-    this.theme.theme === 'contrast' ? this.getColor = colorFunction || contrastColorFunction : this.getColor = colorFunction || defaultColorFunction;
+    this.theme.theme === 'contrast' || this.theme.theme === 'bukele' ? this.getColor = colorFunction || contrastColorFunction : this.getColor = colorFunction || defaultColorFunction;
     this.updateAllColors();
   }
 
@@ -179,7 +179,7 @@ export default class BlockScene {
       removed.forEach(tx => {
         tx.destroy();
       });
-    }, 1000);
+    }, (startTime - performance.now()) + this.animationDuration + 1000);
 
     if (resetLayout) {
       add.forEach(tx => {
@@ -239,14 +239,14 @@ export default class BlockScene {
       { width: number, height: number, resolution: number, blockLimit: number, animationDuration: number, animationOffset: number,
         orientation: string, flip: boolean, vertexArray: FastVertexArray, theme: ThemeService, highlighting: boolean, colorFunction: ((tx: TxView) => Color) | null }
   ): void {
-    this.animationDuration = animationDuration || 1000;
+    this.animationDuration = animationDuration || this.animationDuration || 1000;
     this.configAnimationOffset = animationOffset;
     this.animationOffset = this.configAnimationOffset == null ? (this.width * 1.4) : this.configAnimationOffset;
     this.orientation = orientation;
     this.flip = flip;
     this.vertexArray = vertexArray;
     this.highlightingEnabled = highlighting;
-    theme.theme === 'contrast' ? this.getColor = colorFunction || contrastColorFunction : this.getColor = colorFunction || defaultColorFunction;
+    theme.theme === 'contrast' || theme.theme === 'bukele' ? this.getColor = colorFunction || contrastColorFunction : this.getColor = colorFunction || defaultColorFunction;
     this.theme = theme;
 
     this.scene = {
diff --git a/frontend/src/app/components/block-overview-graph/utils.ts b/frontend/src/app/components/block-overview-graph/utils.ts
index ec6181853..9a6d9da43 100644
--- a/frontend/src/app/components/block-overview-graph/utils.ts
+++ b/frontend/src/app/components/block-overview-graph/utils.ts
@@ -177,7 +177,7 @@ export function ageColorFunction(
     return auditColors.accelerated;
   }
 
-  const color = theme !== 'contrast' ? defaultColorFunction(tx, colors, auditColors, relativeTime) : contrastColorFunction(tx, colors, auditColors, relativeTime);
+  const color = theme !== 'contrast' && theme !== 'bukele' ? defaultColorFunction(tx, colors, auditColors, relativeTime) : contrastColorFunction(tx, colors, auditColors, relativeTime);
 
   const ageLevel = (!tx.time ? 0 : (0.8 * Math.tanh((1 / 15) * Math.log2((Math.max(1, 0.6 * ((relativeTime - tx.time) - 60)))))));
   return {
diff --git a/frontend/src/app/components/block-overview-tooltip/block-overview-tooltip.component.scss b/frontend/src/app/components/block-overview-tooltip/block-overview-tooltip.component.scss
index 507d4c18d..28708506b 100644
--- a/frontend/src/app/components/block-overview-tooltip/block-overview-tooltip.component.scss
+++ b/frontend/src/app/components/block-overview-tooltip/block-overview-tooltip.component.scss
@@ -1,6 +1,6 @@
 .block-overview-tooltip {
   position: absolute;
-  background: rgba(#11131f, 0.95);
+	background: color-mix(in srgb, var(--active-bg) 95%, transparent);
   border-radius: 4px;
   box-shadow: 1px 1px 10px rgba(0,0,0,0.5);
   color: var(--tooltip-grey);
@@ -30,7 +30,7 @@ th, td {
 }
 
 .badge.badge-accelerated {
-  background-color: var(--tertiary);
+  background-color: #653b9c;
   box-shadow: #ad7de57f 0px 0px 12px -2px;
   color: white;
   animation: acceleratePulse 1s infinite;
@@ -71,7 +71,7 @@ th, td {
 }
 
 @keyframes acceleratePulse {
-  0% { background-color: var(--tertiary); box-shadow: #ad7de57f 0px 0px 12px -2px; }
+  0% { background-color: #653b9c; box-shadow: #ad7de57f 0px 0px 12px -2px; }
   50% { background-color: #8457bb; box-shadow: #ad7de5 0px 0px 18px -2px;}
-  100% { background-color: var(--tertiary); box-shadow: #ad7de57f 0px 0px 12px -2px; }
+  100% { background-color: #653b9c; box-shadow: #ad7de57f 0px 0px 12px -2px; }
 }
\ No newline at end of file
diff --git a/frontend/src/app/components/block-rewards-graph/block-rewards-graph.component.scss b/frontend/src/app/components/block-rewards-graph/block-rewards-graph.component.scss
index 7b8154bae..992906e5c 100644
--- a/frontend/src/app/components/block-rewards-graph/block-rewards-graph.component.scss
+++ b/frontend/src/app/components/block-rewards-graph/block-rewards-graph.component.scss
@@ -11,7 +11,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/components/block-sizes-weights-graph/block-sizes-weights-graph.component.scss b/frontend/src/app/components/block-sizes-weights-graph/block-sizes-weights-graph.component.scss
index 7b8154bae..992906e5c 100644
--- a/frontend/src/app/components/block-sizes-weights-graph/block-sizes-weights-graph.component.scss
+++ b/frontend/src/app/components/block-sizes-weights-graph/block-sizes-weights-graph.component.scss
@@ -11,7 +11,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.scss b/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.scss
index 269fdab42..b11a35513 100644
--- a/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.scss
+++ b/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.scss
@@ -63,7 +63,7 @@
 .fee-span {
   font-size: 11px;
   margin-bottom: 5px;
-  color: #fff000;
+  color: var(--yellow);
 }
 
 .transaction-count {
@@ -130,7 +130,7 @@
   height: 0;
   border-left: calc(var(--block-size) * 0.3) solid transparent;
   border-right: calc(var(--block-size) * 0.3) solid transparent;
-  border-bottom: calc(var(--block-size) * 0.3) solid #FFF;
+  border-bottom: calc(var(--block-size) * 0.3) solid var(--fg);
 }
 
 .flashing {
diff --git a/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.ts b/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.ts
index 35499f162..1a7598079 100644
--- a/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.ts
+++ b/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.ts
@@ -70,6 +70,7 @@ export class BlockchainBlocksComponent implements OnInit, OnChanges, OnDestroy {
     liquid: ['var(--liquid)', 'var(--testnet-alt)'],
     'liquidtestnet': ['var(--liquidtestnet)', 'var(--liquidtestnet-alt)'],
     testnet: ['var(--testnet)', 'var(--testnet-alt)'],
+    testnet4: ['var(--testnet)', 'var(--testnet-alt)'],
     signet: ['var(--signet)', 'var(--signet-alt)'],
   };
 
@@ -349,7 +350,7 @@ export class BlockchainBlocksComponent implements OnInit, OnChanges, OnDestroy {
     return {
       left: addLeft + this.blockOffset * index + 'px',
       background: `repeating-linear-gradient(
-        #2d3348,
+        var(--secondary),
         var(--secondary) ${greenBackgroundHeight}%,
         ${this.gradientColors[this.network][0]} ${Math.max(greenBackgroundHeight, 0)}%,
         ${this.gradientColors[this.network][1]} 100%
@@ -361,7 +362,7 @@ export class BlockchainBlocksComponent implements OnInit, OnChanges, OnDestroy {
   convertStyleForLoadingBlock(style) {
     return {
       ...style,
-      background: "#2d3348",
+      background: "var(--secondary)",
     };
   }
 
@@ -370,7 +371,7 @@ export class BlockchainBlocksComponent implements OnInit, OnChanges, OnDestroy {
 
     return {
       left: addLeft + (this.blockOffset * index) + 'px',
-      background: "#2d3348",
+      background: "var(--secondary)",
     };
   }
 
diff --git a/frontend/src/app/components/blockchain/blockchain.component.scss b/frontend/src/app/components/blockchain/blockchain.component.scss
index b0a589a04..700f57a27 100644
--- a/frontend/src/app/components/blockchain/blockchain.component.scss
+++ b/frontend/src/app/components/blockchain/blockchain.component.scss
@@ -54,7 +54,7 @@
 }
 
 .time-toggle {
-  color: white;
+  color: var(--fg);
   font-size: 0.8rem;
   position: absolute;
   bottom: -1.8em;
@@ -68,7 +68,7 @@
 }
 
 .block-display-toggle {
-  color: white;
+  color: var(--fg);
   font-size: 0.8rem;
   position: absolute;
   bottom: 15.8em;
diff --git a/frontend/src/app/components/blockchain/blockchain.component.ts b/frontend/src/app/components/blockchain/blockchain.component.ts
index 60dc22e12..d70e788a2 100644
--- a/frontend/src/app/components/blockchain/blockchain.component.ts
+++ b/frontend/src/app/components/blockchain/blockchain.component.ts
@@ -55,7 +55,7 @@ export class BlockchainComponent implements OnInit, OnDestroy, OnChanges {
     firstValueFrom(this.stateService.chainTip$).then(() => {
       this.loadingTip = false;
     });
-    this.blockDisplayMode = this.StorageService.getValue('block-display-mode-preference') as 'size' | 'fees' || 'size';
+    this.blockDisplayMode = this.StorageService.getValue('block-display-mode-preference') as 'size' | 'fees' || 'fees';
   }
 
   ngOnDestroy(): void {
diff --git a/frontend/src/app/components/clock/clock.component.ts b/frontend/src/app/components/clock/clock.component.ts
index 94ff3e810..4a9b19e78 100644
--- a/frontend/src/app/components/clock/clock.component.ts
+++ b/frontend/src/app/components/clock/clock.component.ts
@@ -32,11 +32,12 @@ export class ClockComponent implements OnInit {
   limitHeight: number;
 
   gradientColors = {
-    '': ['#9339f4', '#105fb0'],
-    liquid: ['#116761', '#183550'],
-    'liquidtestnet': ['#494a4a', '#272e46'],
-    testnet: ['#1d486f', '#183550'],
-    signet: ['#6f1d5d', '#471850'],
+    '': ['var(--mainnet-alt)', 'var(--primary)'],
+    liquid: ['var(--liquid)', 'var(--testnet-alt)'],
+    'liquidtestnet': ['var(--liquidtestnet)', 'var(--liquidtestnet-alt)'],
+    testnet: ['var(--testnet)', 'var(--testnet-alt)'],
+    testnet4: ['var(--testnet)', 'var(--testnet-alt)'],
+    signet: ['var(--signet)', 'var(--signet-alt)'],
   };
 
   constructor(
@@ -99,8 +100,8 @@ export class ClockComponent implements OnInit {
 
     return {
       background: `repeating-linear-gradient(
-        #2d3348,
-        #2d3348 ${greenBackgroundHeight}%,
+        var(--secondary),
+        var(--secondary) ${greenBackgroundHeight}%,
         ${this.gradientColors[''][0]} ${Math.max(greenBackgroundHeight, 0)}%,
         ${this.gradientColors[''][1]} 100%
       )`,
diff --git a/frontend/src/app/components/custom-dashboard/custom-dashboard.component.html b/frontend/src/app/components/custom-dashboard/custom-dashboard.component.html
index 36a5e956c..6e2db2165 100644
--- a/frontend/src/app/components/custom-dashboard/custom-dashboard.component.html
+++ b/frontend/src/app/components/custom-dashboard/custom-dashboard.component.html
@@ -238,7 +238,7 @@
                   <span>&nbsp;</span>
                   <fa-icon [icon]="['fas', 'external-link-alt']" [fixedWidth]="true" style="vertical-align: text-top; font-size: 13px; color: var(--title-fg)"></fa-icon>
                 </a>
-                <app-address-graph [address]="widget.props.address" [addressSummary$]="addressSummary$" [period]="widget.props.period || 'all'" [stats]="address?.chain_stats" [widget]="true" [height]="graphHeight"></app-address-graph>
+                <app-address-graph [address]="widget.props.address" [addressSummary$]="addressSummary$" [period]="widget.props.period || 'all'" [stats]="address ? address.chain_stats : null" [widget]="true" [height]="graphHeight"></app-address-graph>
               </div>
             </div>
           </div>
diff --git a/frontend/src/app/components/custom-dashboard/custom-dashboard.component.ts b/frontend/src/app/components/custom-dashboard/custom-dashboard.component.ts
index 2ed6ed48d..b1f79fc04 100644
--- a/frontend/src/app/components/custom-dashboard/custom-dashboard.component.ts
+++ b/frontend/src/app/components/custom-dashboard/custom-dashboard.component.ts
@@ -1,4 +1,4 @@
-import { AfterViewInit, ChangeDetectionStrategy, Component, HostListener, Inject, OnDestroy, OnInit, PLATFORM_ID } from '@angular/core';
+import { AfterViewInit, ChangeDetectionStrategy, ChangeDetectorRef, Component, HostListener, Inject, OnDestroy, OnInit, PLATFORM_ID } from '@angular/core';
 import { combineLatest, merge, Observable, of, Subject, Subscription } from 'rxjs';
 import { catchError, filter, map, scan, share, shareReplay, startWith, switchMap, tap } from 'rxjs/operators';
 import { BlockExtended, OptimizedMempoolStats, TransactionStripped } from '../../interfaces/node-api.interface';
@@ -86,6 +86,7 @@ export class CustomDashboardComponent implements OnInit, OnDestroy, AfterViewIni
     private electrsApiService: ElectrsApiService,
     private websocketService: WebsocketService,
     private seoService: SeoService,
+    private cd: ChangeDetectorRef,
     @Inject(PLATFORM_ID) private platformId: Object,
   ) {
     this.webGlEnabled = this.stateService.isBrowser && detectWebGL();
@@ -284,8 +285,8 @@ export class CustomDashboardComponent implements OnInit, OnDestroy, AfterViewIni
 
   startAddressSubscription(): void {
     if (this.stateService.env.customize && this.stateService.env.customize.dashboard.widgets.some(w => w.props?.address)) {
-      const address = this.stateService.env.customize.dashboard.widgets.find(w => w.props?.address).props.address;
-      const addressString = (/^[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100}|04[a-fA-F0-9]{128}|(02|03)[a-fA-F0-9]{64}$/.test(address)) ? address.toLowerCase() : address;
+      let addressString = this.stateService.env.customize.dashboard.widgets.find(w => w.props?.address).props.address;
+      addressString = (/^[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100}|04[a-fA-F0-9]{128}|(02|03)[a-fA-F0-9]{64}$/.test(addressString)) ? addressString.toLowerCase() : addressString;
       
       this.addressSubscription = (
         addressString.match(/04[a-fA-F0-9]{128}|(02|03)[a-fA-F0-9]{64}/)
@@ -300,6 +301,7 @@ export class CustomDashboardComponent implements OnInit, OnDestroy, AfterViewIni
         ).subscribe((address: Address) => {
           this.websocketService.startTrackAddress(address.address);
           this.address = address;
+          this.cd.markForCheck();
         });
 
       this.addressSummary$ = (
diff --git a/frontend/src/app/components/difficulty-mining/difficulty-mining.component.scss b/frontend/src/app/components/difficulty-mining/difficulty-mining.component.scss
index 77f54f267..bd396928f 100644
--- a/frontend/src/app/components/difficulty-mining/difficulty-mining.component.scss
+++ b/frontend/src/app/components/difficulty-mining/difficulty-mining.component.scss
@@ -119,7 +119,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/components/difficulty/difficulty-tooltip.component.scss b/frontend/src/app/components/difficulty/difficulty-tooltip.component.scss
index 5b4a8a02f..e4fd989af 100644
--- a/frontend/src/app/components/difficulty/difficulty-tooltip.component.scss
+++ b/frontend/src/app/components/difficulty/difficulty-tooltip.component.scss
@@ -1,9 +1,9 @@
 .difficulty-tooltip {
   position: fixed;
-  background: rgba(#11131f, 0.95);
+  background: color-mix(in srgb, var(--active-bg) 95%, transparent);
   border-radius: 4px;
   box-shadow: 1px 1px 10px rgba(0,0,0,0.5);
-  color: #b1b1b1;
+  color: var(--tooltip-grey);
   padding: 10px 15px;
   text-align: left;
   pointer-events: none;
diff --git a/frontend/src/app/components/difficulty/difficulty.component.html b/frontend/src/app/components/difficulty/difficulty.component.html
index c9b3d183b..e9bf36515 100644
--- a/frontend/src/app/components/difficulty/difficulty.component.html
+++ b/frontend/src/app/components/difficulty/difficulty.component.html
@@ -15,8 +15,8 @@
           <svg #epochSvg class="epoch-blocks" height="22px" width="100%" viewBox="0 0 224 9" shape-rendering="crispEdges" preserveAspectRatio="none">
             <defs>
               <linearGradient id="diff-gradient" x1="0%" y1="0%" x2="100%" y2="0%" gradientUnits="userSpaceOnUse">
-                <stop offset="0%" stop-color="#105fb0" />
-                <stop offset="100%" stop-color="#9339f4" />
+                <stop offset="0%" stop-color="var(--primary)" />
+                <stop offset="100%" stop-color="var(--mainnet-alt)" />
               </linearGradient>
               <linearGradient id="diff-hover-gradient" x1="0%" y1="0%" x2="100%" y2="0%" gradientUnits="userSpaceOnUse">
                 <stop offset="0%" stop-color="#2486eb" />
diff --git a/frontend/src/app/components/difficulty/difficulty.component.scss b/frontend/src/app/components/difficulty/difficulty.component.scss
index d10b800a8..8de7fae2c 100644
--- a/frontend/src/app/components/difficulty/difficulty.component.scss
+++ b/frontend/src/app/components/difficulty/difficulty.component.scss
@@ -128,7 +128,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
@@ -223,7 +224,7 @@
     height: 100%;
   }
   .background {
-    background: linear-gradient(to right, var(--primary), #9339f4);
+    background: linear-gradient(to right, var(--primary), var(--mainnet-alt));
     left: 0;
     right: 0;
   }
diff --git a/frontend/src/app/components/fees-box/fees-box.component.scss b/frontend/src/app/components/fees-box/fees-box.component.scss
index 0272936ee..c5843f58b 100644
--- a/frontend/src/app/components/fees-box/fees-box.component.scss
+++ b/frontend/src/app/components/fees-box/fees-box.component.scss
@@ -79,7 +79,7 @@
   display: flex;
   flex-direction: row;
   transition: background-color 1s;
-  color: var(--color-fg);
+  color: #fff;
   &.priority {
     @media (767px < width < 992px), (width < 576px) {
       width: 100%;
diff --git a/frontend/src/app/components/fees-box/fees-box.component.ts b/frontend/src/app/components/fees-box/fees-box.component.ts
index e923b26e9..78fd102ca 100644
--- a/frontend/src/app/components/fees-box/fees-box.component.ts
+++ b/frontend/src/app/components/fees-box/fees-box.component.ts
@@ -16,8 +16,8 @@ export class FeesBoxComponent implements OnInit, OnDestroy {
   isLoading$: Observable<boolean>;
   recommendedFees$: Observable<Recommendedfees>;
   themeSubscription: Subscription;
-  gradient = 'linear-gradient(to right, #2e324e, #2e324e)';
-  noPriority = '#2e324e';
+  gradient = 'linear-gradient(to right, var(--skeleton-bg), var(--skeleton-bg))';
+  noPriority = 'var(--skeleton-bg)';
   fees: Recommendedfees;
 
   constructor(
diff --git a/frontend/src/app/components/hashrate-chart/hashrate-chart.component.scss b/frontend/src/app/components/hashrate-chart/hashrate-chart.component.scss
index dc19dc9d1..b6b49eed2 100644
--- a/frontend/src/app/components/hashrate-chart/hashrate-chart.component.scss
+++ b/frontend/src/app/components/hashrate-chart/hashrate-chart.component.scss
@@ -11,7 +11,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/components/hashrates-chart-pools/hashrate-chart-pools.component.scss b/frontend/src/app/components/hashrates-chart-pools/hashrate-chart-pools.component.scss
index 64a4dcb3d..a2e3b8866 100644
--- a/frontend/src/app/components/hashrates-chart-pools/hashrate-chart-pools.component.scss
+++ b/frontend/src/app/components/hashrates-chart-pools/hashrate-chart-pools.component.scss
@@ -11,7 +11,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/components/liquid-master-page/liquid-master-page.component.html b/frontend/src/app/components/liquid-master-page/liquid-master-page.component.html
index 7d826ca87..b2dd0344b 100644
--- a/frontend/src/app/components/liquid-master-page/liquid-master-page.component.html
+++ b/frontend/src/app/components/liquid-master-page/liquid-master-page.component.html
@@ -51,7 +51,8 @@
     <div ngbDropdownMenu [ngClass]="{'dropdown-menu-right' : isMobile}">
       <a [href]="env.MEMPOOL_WEBSITE_URL + urlLanguage + (networkPaths['mainnet'] || '')" ngbDropdownItem class="mainnet"><app-svg-images name="bitcoin" width="22" height="22" viewBox="0 0 65 65" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Mainnet</a>
       <a [href]="env.MEMPOOL_WEBSITE_URL + urlLanguage + (networkPaths['signet'] || '/signet')" ngbDropdownItem *ngIf="env.SIGNET_ENABLED" class="signet"><app-svg-images name="signet" width="22" height="22" viewBox="0 0 65 65" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Signet</a>
-      <a [href]="env.MEMPOOL_WEBSITE_URL + urlLanguage + (networkPaths['testnet'] || '/testnet')" ngbDropdownItem *ngIf="env.TESTNET_ENABLED" class="testnet"><app-svg-images name="testnet" width="22" height="22" viewBox="0 0 65 65" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Testnet</a>
+      <a [href]="env.MEMPOOL_WEBSITE_URL + urlLanguage + (networkPaths['testnet'] || '/testnet')" ngbDropdownItem *ngIf="env.TESTNET_ENABLED" class="testnet"><app-svg-images name="testnet" width="22" height="22" viewBox="0 0 65 65" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Testnet3</a>
+      <a [href]="env.MEMPOOL_WEBSITE_URL + urlLanguage + (networkPaths['testnet4'] || '/testnet4')" ngbDropdownItem *ngIf="env.TESTNET4_ENABLED" class="testnet"><app-svg-images name="testnet4" width="22" height="22" viewBox="0 0 65 65" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Testnet4 <span class="badge badge-pill badge-warning beta-network" i18n="beta">beta</span></a>
       <h6 class="dropdown-header" i18n="master-page.layer2-networks-header">Layer 2 Networks</h6>
       <a ngbDropdownItem class="liquid mr-1" [class.active]="network.val === 'liquid'" [routerLink]="networkPaths['liquid'] || '/'"><app-svg-images name="liquid" width="22" height="22" viewBox="0 0 125 125" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Liquid</a>
       <a ngbDropdownItem *ngIf="env.LIQUID_TESTNET_ENABLED" class="liquidtestnet" [class.active]="network.val === 'liquidtestnet'" [routerLink]="networkPaths['liquidtestnet'] || '/testnet'"><app-svg-images name="liquidtestnet" width="22" height="22" viewBox="0 0 125 125" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Liquid Testnet</a>
diff --git a/frontend/src/app/components/liquid-master-page/liquid-master-page.component.scss b/frontend/src/app/components/liquid-master-page/liquid-master-page.component.scss
index af7f53770..17bc8aeb5 100644
--- a/frontend/src/app/components/liquid-master-page/liquid-master-page.component.scss
+++ b/frontend/src/app/components/liquid-master-page/liquid-master-page.component.scss
@@ -4,6 +4,7 @@
   top: 0;
   width: 100%;
   z-index: 100;
+  background-color: var(--bg);
 }
 
 li.nav-item.active {
@@ -17,7 +18,7 @@ fa-icon {
 .navbar {
   z-index: 100;
   min-height: 64px;
-  background-color: var(--bg);
+  background-color: var(--nav-bg);
 }
 
 li.nav-item {
@@ -48,7 +49,7 @@ li.nav-item {
 }
 
 .navbar-nav {
-  background: var(--navbar-bg);
+  background: var(--nav-bg);
   bottom: 0;
   box-shadow: 0px 0px 15px 0px #000;
   flex-direction: row;
@@ -169,4 +170,8 @@ nav {
     margin-left: 5px;
     margin-right: 0px;
   }
+}
+
+.beta-network {
+  font-size: 8px;
 }
\ No newline at end of file
diff --git a/frontend/src/app/components/master-page-preview/master-page-preview.component.html b/frontend/src/app/components/master-page-preview/master-page-preview.component.html
index 36e8eed10..8f3204ec4 100644
--- a/frontend/src/app/components/master-page-preview/master-page-preview.component.html
+++ b/frontend/src/app/components/master-page-preview/master-page-preview.component.html
@@ -6,7 +6,7 @@
         <img [src]="enterpriseInfo.img" class="subdomain_logo" [class]="{'rounded': enterpriseInfo.rounded_corner}">
       }
       @if (enterpriseInfo?.header_img) {
-        <img *ngIf="enterpriseInfo.header_img" [src]="enterpriseInfo?.header_img" alt="enterpriseInfo.title" height="36px">
+        <img *ngIf="enterpriseInfo.header_img" [src]="enterpriseInfo?.header_img" alt="enterpriseInfo.title" height="60px" class="mr-3">
       } @else {
         <app-svg-images *ngIf="!officialMempoolSpace" name="mempoolSpace" viewBox="0 0 500 126" width="500" height="126" class="mempool-logo" style="width: 200px; height: 50px"></app-svg-images>
         <app-svg-images *ngIf="officialMempoolSpace" name="officialMempoolSpace" style="width: 200px; height: 50px" width="500" height="126" viewBox="0 0 500 126"></app-svg-images>
@@ -15,7 +15,8 @@
 
     <div [ngSwitch]="network.val">
       <span *ngSwitchCase="'signet'" class="network signet"><app-svg-images name="signet" width="35" height="35" viewBox="0 0 65 65" style="width: 40px; height: 48px;" class="mainnet mr-1"></app-svg-images> Signet</span>
-      <span *ngSwitchCase="'testnet'" class="network testnet"><app-svg-images name="testnet" width="35" height="35" viewBox="0 0 65 65" style="width: 40px; height: 48px;" class="mainnet mr-1"></app-svg-images> Testnet</span>
+      <span *ngSwitchCase="'testnet'" class="network testnet"><app-svg-images name="testnet" width="35" height="35" viewBox="0 0 65 65" style="width: 40px; height: 48px;" class="mainnet mr-1"></app-svg-images> Testnet3</span>
+      <span *ngSwitchCase="'testnet4'" class="network testnet"><app-svg-images name="testnet4" width="35" height="35" viewBox="0 0 65 65" style="width: 40px; height: 48px;" class="mainnet mr-1"></app-svg-images> Testnet4</span>
       <span *ngSwitchCase="'liquid'" class="network liquid"><app-svg-images name="liquid" width="35" height="35" viewBox="0 0 125 125" style="width: 40px; height: 48px;" class="mainnet mr-1"></app-svg-images> Mainnet</span>
       <span *ngSwitchCase="'liquidtestnet'" class="network liquidtestnet"><app-svg-images name="liquidtestnet" width="35" height="35" viewBox="0 0 125 125" style="width: 40px; height: 48px;" class="mainnet mr-1"></app-svg-images> Testnet</span>
       <span *ngSwitchDefault class="network mainnet"><app-svg-images name="bitcoin" width="35" height="35" viewBox="0 0 65 65" style="width: 40px; height: 48px;" class="mainnet mr-1"></app-svg-images> Mainnet</span>
diff --git a/frontend/src/app/components/master-page-preview/master-page-preview.component.scss b/frontend/src/app/components/master-page-preview/master-page-preview.component.scss
index fb0fd5c24..bb2e5b706 100644
--- a/frontend/src/app/components/master-page-preview/master-page-preview.component.scss
+++ b/frontend/src/app/components/master-page-preview/master-page-preview.component.scss
@@ -5,6 +5,7 @@
   max-width: 1200px;
   max-height: 600px;
   padding-top: 80px;
+  background: var(--nav-bg);
 
   header {
     position: absolute;
@@ -18,7 +19,7 @@
     flex-direction: row;
     justify-content: space-between;
     align-items: center;
-    background: var(--stat-box-bg);
+    background: var(--nav-bg);
     text-align: start;
     font-size: 1.8em;
   }
diff --git a/frontend/src/app/components/master-page/master-page.component.html b/frontend/src/app/components/master-page/master-page.component.html
index 5da892f4a..169dd24a3 100644
--- a/frontend/src/app/components/master-page/master-page.component.html
+++ b/frontend/src/app/components/master-page/master-page.component.html
@@ -17,16 +17,16 @@
 
   <!-- Large screen -->
   <a class="navbar-brand d-none d-md-flex" [ngClass]="{'dual-logos': subdomain}" [routerLink]="['/' | relativeUrl]" (click)="brandClick($event)">
-    <ng-template [ngIf]="subdomain && enterpriseInfo">
-      <div class="subdomain_container">
-        <img [src]="enterpriseInfo.img || '/api/v1/services/enterprise/images/' + subdomain + '/logo?imageMd5=' + enterpriseInfo.imageMd5" class="subdomain_logo" [class]="{'rounded': enterpriseInfo.rounded_corner}">
-      </div>
-      <div class="vertical-line"></div>
-    </ng-template>
     <ng-container *ngIf="{ val: connectionState$ | async } as connectionState">
       @if (enterpriseInfo?.header_img) {
-        <img [src]="enterpriseInfo?.header_img" alt="enterpriseInfo.title" height="36px">
+        <img [src]="enterpriseInfo?.header_img" alt="enterpriseInfo.title" height="48px" class="mr-3">
       } @else {
+        <ng-template [ngIf]="subdomain && enterpriseInfo">
+          <div class="subdomain_container">
+            <img [src]="enterpriseInfo.img || '/api/v1/services/enterprise/images/' + subdomain + '/logo?imageMd5=' + enterpriseInfo.imageMd5" class="subdomain_logo" [class]="{'rounded': enterpriseInfo.rounded_corner}">
+          </div>
+          <div class="vertical-line"></div>
+        </ng-template>
         <app-svg-images *ngIf="!officialMempoolSpace" name="mempoolSpace" viewBox="0 0 500 126" class="mempool-logo" [ngStyle]="{'opacity': connectionState.val === 2 ? 1 : 0.5 }"></app-svg-images>
         <app-svg-images *ngIf="officialMempoolSpace" name="officialMempoolSpace" viewBox="0 0 500 126"></app-svg-images>
       }
@@ -38,34 +38,39 @@
   </a>
   <!-- Mobile -->
   <a class="navbar-brand d-flex d-md-none justify-content-center" [ngClass]="{'dual-logos': subdomain, 'mr-0': subdomain}" [routerLink]="['/' | relativeUrl]" (click)="brandClick($event)">
-    <ng-template [ngIf]="subdomain && enterpriseInfo">
-      <div class="subdomain_container">
-        <img [src]="enterpriseInfo.img || '/api/v1/services/enterprise/images/' + subdomain + '/logo?imageMd5=' + enterpriseInfo.imageMd5" class="subdomain_logo" [class]="{'rounded': enterpriseInfo.rounded_corner}">
-      </div>
-      <div class="vertical-line"></div>
-    </ng-template>
-    <ng-container *ngIf="{ val: connectionState$ | async } as connectionState">
-      @if (enterpriseInfo?.header_img) {
-        <img [src]="enterpriseInfo?.header_img" alt="enterpriseInfo.title" height="36px">
-      } @else {
-        <app-svg-images *ngIf="!officialMempoolSpace" name="mempoolSpace" viewBox="0 0 500 126" class="mempool-logo" [ngStyle]="{'opacity': connectionState.val === 2 ? 1 : 0.5 }"></app-svg-images>
-        <app-svg-images *ngIf="officialMempoolSpace" name="officialMempoolSpace" viewBox="0 0 500 126"></app-svg-images>
-      }
-        <div class="connection-badge">
-        <div class="badge badge-warning" *ngIf="connectionState.val === 0" i18n="master-page.offline">Offline</div>
-        <div class="badge badge-warning" *ngIf="connectionState.val === 1" i18n="master-page.reconnecting">Reconnecting...</div>
-      </div>
-    </ng-container>
+    @if (enterpriseInfo?.header_img) {
+      <img [src]="enterpriseInfo?.header_img" alt="enterpriseInfo.title" height="42px">
+    } @else {
+      <ng-template [ngIf]="subdomain && enterpriseInfo">
+        <div class="subdomain_container">
+          <img [src]="enterpriseInfo.img || '/api/v1/services/enterprise/images/' + subdomain + '/logo?imageMd5=' + enterpriseInfo.imageMd5" class="subdomain_logo" [class]="{'rounded': enterpriseInfo.rounded_corner}">
+        </div>
+        <div class="vertical-line"></div>
+      </ng-template>
+      <ng-container *ngIf="{ val: connectionState$ | async } as connectionState">
+        @if (enterpriseInfo?.header_img) {
+          <img [src]="enterpriseInfo?.header_img" alt="enterpriseInfo.title" height="36px">
+        } @else {
+          <app-svg-images *ngIf="!officialMempoolSpace" name="mempoolSpace" viewBox="0 0 500 126" class="mempool-logo" [ngStyle]="{'opacity': connectionState.val === 2 ? 1 : 0.5 }"></app-svg-images>
+          <app-svg-images *ngIf="officialMempoolSpace" name="officialMempoolSpace" viewBox="0 0 500 126"></app-svg-images>
+        }
+          <div class="connection-badge">
+          <div class="badge badge-warning" *ngIf="connectionState.val === 0" i18n="master-page.offline">Offline</div>
+          <div class="badge badge-warning" *ngIf="connectionState.val === 1" i18n="master-page.reconnecting">Reconnecting...</div>
+        </div>
+      </ng-container>
+    }
   </a>
 
-  <div (window:resize)="onResize()" ngbDropdown class="dropdown-container" *ngIf="env.TESTNET_ENABLED || env.SIGNET_ENABLED || env.LIQUID_ENABLED || env.LIQUID_TESTNET_ENABLED">
+  <div (window:resize)="onResize()" ngbDropdown class="dropdown-container" *ngIf="env.TESTNET_ENABLED || env.TESTNET4_ENABLED || env.SIGNET_ENABLED || env.LIQUID_ENABLED || env.LIQUID_TESTNET_ENABLED">
     <button ngbDropdownToggle type="button" class="btn btn-secondary dropdown-toggle-split d-flex justify-content-center align-items-center" aria-haspopup="true">
       <app-svg-images class="d-flex justify-content-center align-items-center current-network-svg" [name]="network.val === '' ? 'bitcoin' : network.val" width="20" height="20" viewBox="0 0 65 65"></app-svg-images>
     </button>
     <div ngbDropdownMenu [ngClass]="{'dropdown-menu-right' : isMobile}">
       <a ngbDropdownItem class="mainnet" [routerLink]="networkPaths['mainnet'] || '/'"><app-svg-images name="bitcoin" width="22" height="22" viewBox="0 0 65 65" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Mainnet</a>
       <a ngbDropdownItem *ngIf="env.SIGNET_ENABLED" class="signet" [class.active]="network.val === 'signet'" [routerLink]="networkPaths['signet'] || '/signet'"><app-svg-images name="signet" width="22" height="22" viewBox="0 0 65 65" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Signet</a>
-      <a ngbDropdownItem *ngIf="env.TESTNET_ENABLED" class="testnet" [class.active]="network.val === 'testnet'" [routerLink]="networkPaths['testnet'] || '/testnet'"><app-svg-images name="testnet" width="22" height="22" viewBox="0 0 65 65" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Testnet</a>
+      <a ngbDropdownItem *ngIf="env.TESTNET_ENABLED" class="testnet" [class.active]="network.val === 'testnet'" [routerLink]="networkPaths['testnet'] || '/testnet'"><app-svg-images name="testnet" width="22" height="22" viewBox="0 0 65 65" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Testnet3</a>
+      <a ngbDropdownItem *ngIf="env.TESTNET4_ENABLED" class="testnet" [class.active]="network.val === 'testnet4'" [routerLink]="networkPaths['testnet4'] || '/testnet4'"><app-svg-images name="testnet4" width="22" height="22" viewBox="0 0 65 65" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Testnet4 <span class="badge badge-pill badge-warning beta-network" i18n="beta">beta</span></a>
       <h6 *ngIf="env.LIQUID_ENABLED" class="dropdown-header" i18n="master-page.layer2-networks-header">Layer 2 Networks</h6>
       <a [href]="env.LIQUID_WEBSITE_URL + urlLanguage + (networkPaths['liquid'] || '')" ngbDropdownItem *ngIf="env.LIQUID_ENABLED" class="liquid" [class.active]="network.val === 'liquid'"><app-svg-images name="liquid" width="22" height="22" viewBox="0 0 125 125" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Liquid</a>
       <a [href]="env.LIQUID_WEBSITE_URL + urlLanguage  + (networkPaths['liquidtestnet'] || '/testnet')" ngbDropdownItem *ngIf="env.LIQUID_TESTNET_ENABLED" class="liquidtestnet" [class.active]="network.val === 'liquid'"><app-svg-images name="liquidtestnet" width="22" height="22" viewBox="0 0 125 125" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Liquid Testnet</a>
@@ -87,7 +92,7 @@
       <li class="nav-item" routerLinkActive="active" [routerLinkActiveOptions]="{exact: true}" id="btn-pools" *ngIf="stateService.env.MINING_DASHBOARD">
         <a class="nav-link" [routerLink]="['/mining' | relativeUrl]" (click)="collapse()"><fa-icon [icon]="['fas', 'hammer']" [fixedWidth]="true" i18n-title="mining.mining-dashboard" title="Mining Dashboard"></fa-icon></a>
       </li>
-      <li class="nav-item" routerLinkActive="active" [routerLinkActiveOptions]="{exact: true}" id="btn-lightning" *ngIf="stateService.env.LIGHTNING">
+      <li class="nav-item" routerLinkActive="active" [routerLinkActiveOptions]="{exact: true}" id="btn-lightning" *ngIf="stateService.env.LIGHTNING && lightningNetworks.includes(stateService.network)">
         <a class="nav-link" [routerLink]="['/lightning' | relativeUrl]" (click)="collapse()"><fa-icon [icon]="['fas', 'bolt']" [fixedWidth]="true" i18n-title="master-page.lightning" title="Lightning Explorer"></fa-icon>
         </a>
       </li>
@@ -114,7 +119,7 @@
   <div class="empty-sidenav"><!-- empty sidenav needed to push footer down the screen --></div>
 
   <div class="flex-grow-1 d-flex flex-column">
-    <app-testnet-alert *ngIf="network.val === 'testnet' || network.val === 'signet'"></app-testnet-alert>
+    <app-testnet-alert *ngIf="network.val === 'testnet' || network.val === 'testnet4' || network.val === 'signet'"></app-testnet-alert>
 
     <main style="min-width: 375px; max-width: 100vw">
       <router-outlet></router-outlet>
diff --git a/frontend/src/app/components/master-page/master-page.component.scss b/frontend/src/app/components/master-page/master-page.component.scss
index 77fe49927..6bd4fd821 100644
--- a/frontend/src/app/components/master-page/master-page.component.scss
+++ b/frontend/src/app/components/master-page/master-page.component.scss
@@ -3,6 +3,7 @@
   position: -webkit-sticky;
   top: 0;
   width: 100%;
+  background-color: var(--bg);
   z-index: 100;
 }
 
@@ -18,7 +19,7 @@ fa-icon {
   z-index: 100;
   min-height: 64px;
   width: 100%;
-  background-color: var(--bg);
+  background-color: var(--nav-bg);
 }
 
 li.nav-item {
@@ -59,7 +60,7 @@ li.nav-item {
 }
 
 .navbar-nav {
-  background: var(--navbar-bg);
+  background: var(--nav-bg);
   bottom: 0;
   box-shadow: 0px 0px 15px 0px #000;
   flex-direction: row;
@@ -243,6 +244,10 @@ nav {
   }
 }
 
+.beta-network {
+  font-size: 8px;
+}
+
 .current-network-svg {
   width: 20px;
   height: 20px;
diff --git a/frontend/src/app/components/master-page/master-page.component.ts b/frontend/src/app/components/master-page/master-page.component.ts
index f3472f204..fc10a9e44 100644
--- a/frontend/src/app/components/master-page/master-page.component.ts
+++ b/frontend/src/app/components/master-page/master-page.component.ts
@@ -27,6 +27,7 @@ export class MasterPageComponent implements OnInit, OnDestroy {
   subdomain = '';
   networkPaths: { [network: string]: string };
   networkPaths$: Observable<Record<string, string>>;
+  lightningNetworks = ['', 'mainnet', 'bitcoin', 'testnet', 'signet'];
   footerVisible = true;
   user: any = undefined;
   servicesEnabled = false;
diff --git a/frontend/src/app/components/mempool-block-overview/mempool-block-overview.component.ts b/frontend/src/app/components/mempool-block-overview/mempool-block-overview.component.ts
index 4d01bd9b9..2c564882e 100644
--- a/frontend/src/app/components/mempool-block-overview/mempool-block-overview.component.ts
+++ b/frontend/src/app/components/mempool-block-overview/mempool-block-overview.component.ts
@@ -1,11 +1,10 @@
-import { Component, ComponentRef, ViewChild, HostListener, Input, Output, EventEmitter,
+import { Component, ViewChild, Input, Output, EventEmitter,
   OnInit, OnDestroy, OnChanges, ChangeDetectionStrategy, ChangeDetectorRef, AfterViewInit } from '@angular/core';
 import { StateService } from '../../services/state.service';
-import { MempoolBlockDelta } from '../../interfaces/websocket.interface';
+import { MempoolBlockDelta, isMempoolDelta } from '../../interfaces/websocket.interface';
 import { TransactionStripped } from '../../interfaces/node-api.interface';
 import { BlockOverviewGraphComponent } from '../../components/block-overview-graph/block-overview-graph.component';
-import { Subscription, BehaviorSubject, merge, of, timer } from 'rxjs';
-import { switchMap, filter, concatMap, map } from 'rxjs/operators';
+import { Subscription, BehaviorSubject } from 'rxjs';
 import { WebsocketService } from '../../services/websocket.service';
 import { RelativeUrlPipe } from '../../shared/pipes/relative-url/relative-url.pipe';
 import { Router } from '@angular/router';
@@ -39,10 +38,6 @@ export class MempoolBlockOverviewComponent implements OnInit, OnDestroy, OnChang
   poolDirection: string = 'left';
 
   blockSub: Subscription;
-  rateLimit = 1000;
-  private lastEventTime = Date.now() - this.rateLimit;
-  private subId = 0;
-
   firstLoad: boolean = true;
 
   constructor(
@@ -62,39 +57,13 @@ export class MempoolBlockOverviewComponent implements OnInit, OnDestroy, OnChang
   }
 
   ngAfterViewInit(): void {
-    this.blockSub = merge(
-      this.stateService.mempoolBlockTransactions$,
-      this.stateService.mempoolBlockDelta$,
-    ).pipe(
-      concatMap(update => {
-        const now = Date.now();
-        const timeSinceLastEvent = now - this.lastEventTime;
-        this.lastEventTime = Math.max(now, this.lastEventTime + this.rateLimit);
-
-        const subId = this.subId;
-
-        // If time since last event is less than X seconds, delay this event
-        if (timeSinceLastEvent < this.rateLimit) {
-          return timer(this.rateLimit - timeSinceLastEvent).pipe(
-            // Emit the event after the timer
-            map(() => ({ update, subId }))
-          );
-        } else {
-          // If enough time has passed, emit the event immediately
-          return of({ update, subId });
-        }
-      })
-    ).subscribe(({ update, subId }) => {
-      // discard stale updates after a block transition
-      if (subId !== this.subId) {
-        return;
-      }
+    this.blockSub = this.stateService.mempoolBlockUpdate$.subscribe((update) => {
       // process update
-      if (update['added']) {
+      if (isMempoolDelta(update)) {
         // delta
-        this.updateBlock(update as MempoolBlockDelta);
+        this.updateBlock(update);
       } else {
-        const transactionsStripped = update as TransactionStripped[];
+        const transactionsStripped = update.transactions;
         // new transactions
         if (this.firstLoad) {
           this.replaceBlock(transactionsStripped);
@@ -137,7 +106,6 @@ export class MempoolBlockOverviewComponent implements OnInit, OnDestroy, OnChang
 
   ngOnChanges(changes): void {
     if (changes.index) {
-      this.subId++;
       this.firstLoad = true;
       if (this.blockGraph) {
         this.blockGraph.clear(changes.index.currentValue > changes.index.previousValue ? this.chainDirection : this.poolDirection);
@@ -173,7 +141,11 @@ export class MempoolBlockOverviewComponent implements OnInit, OnDestroy, OnChang
       const direction = (this.blockIndex == null || this.index < this.blockIndex) ? this.poolDirection : this.chainDirection;
       this.blockGraph.replace(delta.added, direction);
     } else {
-      this.blockGraph.update(delta.added, delta.removed, delta.changed || [], blockMined ? this.chainDirection : this.poolDirection, blockMined);
+      if (blockMined) {
+        this.blockGraph.update(delta.added, delta.removed, delta.changed || [], blockMined ? this.chainDirection : this.poolDirection, blockMined);
+      } else {
+        this.blockGraph.deferredUpdate(delta.added, delta.removed, delta.changed || [], this.poolDirection);
+      }
     }
 
     this.lastBlockHeight = this.stateService.latestBlockHeight;
diff --git a/frontend/src/app/components/mempool-blocks/mempool-blocks.component.scss b/frontend/src/app/components/mempool-blocks/mempool-blocks.component.scss
index 660ad6f54..5f7b15092 100644
--- a/frontend/src/app/components/mempool-blocks/mempool-blocks.component.scss
+++ b/frontend/src/app/components/mempool-blocks/mempool-blocks.component.scss
@@ -56,7 +56,7 @@
 .fee-span {
   font-size: 11px;
   margin-bottom: 5px;
-  color: #fff000;
+  color: var(--yellow);
 }
 
 .transaction-count {
@@ -119,7 +119,7 @@
   height: 0;
   border-left: calc(var(--block-size) * 0.3) solid transparent;
   border-right: calc(var(--block-size) * 0.3) solid transparent;
-  border-bottom: calc(var(--block-size) * 0.3) solid #FFF;
+  border-bottom: calc(var(--block-size) * 0.3) solid var(--fg);
 }
 
 .blockLink {
diff --git a/frontend/src/app/components/mining-dashboard/mining-dashboard.component.scss b/frontend/src/app/components/mining-dashboard/mining-dashboard.component.scss
index a7948b40e..f1c49c9e7 100644
--- a/frontend/src/app/components/mining-dashboard/mining-dashboard.component.scss
+++ b/frontend/src/app/components/mining-dashboard/mining-dashboard.component.scss
@@ -63,7 +63,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/components/rbf-timeline/rbf-timeline-tooltip.component.scss b/frontend/src/app/components/rbf-timeline/rbf-timeline-tooltip.component.scss
index cd31aa562..eeb40a52d 100644
--- a/frontend/src/app/components/rbf-timeline/rbf-timeline-tooltip.component.scss
+++ b/frontend/src/app/components/rbf-timeline/rbf-timeline-tooltip.component.scss
@@ -1,10 +1,10 @@
 .rbf-tooltip {
   position: fixed;
   z-index: 3;
-  background: rgba(#11131f, 0.95);
+  background: color-mix(in srgb, var(--active-bg) 95%, transparent);
   border-radius: 4px;
   box-shadow: 1px 1px 10px rgba(0,0,0,0.5);
-  color: #b1b1b1;
+  color: var(--tooltip-grey);
   display: flex;
   flex-direction: column;
   justify-content: space-between;
diff --git a/frontend/src/app/components/rbf-timeline/rbf-timeline.component.scss b/frontend/src/app/components/rbf-timeline/rbf-timeline.component.scss
index 6803e82ae..1026d6ea9 100644
--- a/frontend/src/app/components/rbf-timeline/rbf-timeline.component.scss
+++ b/frontend/src/app/components/rbf-timeline/rbf-timeline.component.scss
@@ -159,7 +159,7 @@
 
       &.selected {
         .shape-border {
-          background: #9339f4;
+          background: var(--mainnet-alt);
         }
       }
 
@@ -183,7 +183,7 @@
           width: calc(1em + 16px);
 
           .shape {
-            border: solid 4px #9339f4;
+            border: solid 4px var(--mainnet-alt);
           }
 
           &:hover {
diff --git a/frontend/src/app/components/search-form/search-form.component.ts b/frontend/src/app/components/search-form/search-form.component.ts
index 8f5e65f96..fe073564e 100644
--- a/frontend/src/app/components/search-form/search-form.component.ts
+++ b/frontend/src/app/components/search-form/search-form.component.ts
@@ -179,7 +179,7 @@ export class SearchFormComponent implements OnInit {
           const lightningResults = result[1];
 
           // Do not show date and timestamp results for liquid
-          const isNetworkBitcoin = this.network === '' || this.network === 'testnet' || this.network === 'signet';
+          const isNetworkBitcoin = this.network === '' || this.network === 'testnet' || this.network === 'testnet4' || this.network === 'signet';
 
           const matchesBlockHeight = this.regexBlockheight.test(searchText) && parseInt(searchText) <= this.stateService.latestBlockHeight;
           const matchesDateTime = this.regexDate.test(searchText) && new Date(searchText).toString() !== 'Invalid Date' && new Date(searchText).getTime() <= Date.now() && isNetworkBitcoin;
diff --git a/frontend/src/app/components/svg-images/svg-images.component.html b/frontend/src/app/components/svg-images/svg-images.component.html
index 3fe3f56c8..395bbcc53 100644
--- a/frontend/src/app/components/svg-images/svg-images.component.html
+++ b/frontend/src/app/components/svg-images/svg-images.component.html
@@ -60,6 +60,9 @@
   <ng-container *ngSwitchCase="'testnet'">
     <ng-component *ngTemplateOutlet="bitcoinLogo; context: {$implicit: '#5fd15c', width, height, viewBox}"></ng-component>
   </ng-container>
+  <ng-container *ngSwitchCase="'testnet4'">
+    <ng-component *ngTemplateOutlet="bitcoinLogo; context: {$implicit: '#5fd15c', width, height, viewBox}"></ng-component>
+  </ng-container>
   <ng-container *ngSwitchCase="'liquid'">
     <ng-component *ngTemplateOutlet="liquidLogo; context: {$implicit: '', width, height, viewBox, color1: '#2cccbf', color2: '#9ef2ed'}"></ng-component>
   </ng-container>
diff --git a/frontend/src/app/components/test-transactions/test-transactions.component.html b/frontend/src/app/components/test-transactions/test-transactions.component.html
new file mode 100644
index 000000000..20ba5c4bd
--- /dev/null
+++ b/frontend/src/app/components/test-transactions/test-transactions.component.html
@@ -0,0 +1,53 @@
+<div class="container-xl">
+  <h1 class="text-left" i18n="shared.test-transactions|Test Transactions">Test Transactions</h1>
+
+  <form [formGroup]="testTxsForm" (submit)="testTxsForm.valid && testTxs()" novalidate>
+    <label for="maxfeerate" i18n="test.tx.raw-hex">Raw hex</label>
+    <div class="mb-3">
+      <textarea formControlName="txs" class="form-control" rows="5" i18n-placeholder="transaction.test-transactions" placeholder="Comma-separated list of raw transactions"></textarea>
+    </div>
+    <label for="maxfeerate" i18n="test.tx.max-fee-rate">Maximum fee rate (sat/vB)</label>
+    <input type="number" class="form-control input-dark" formControlName="maxfeerate" id="maxfeerate"
+        [value]="10000" placeholder="10,000 s/vb" [class]="{invalid: invalidMaxfeerate}">
+    <br>
+    <button [disabled]="isLoading" type="submit" class="btn btn-primary mr-2" i18n="shared.test-transactions|Test Transactions">Test Transactions</button>
+    <p class="red-color d-inline">{{ error }}</p>
+  </form>
+
+  <br>
+
+  <div class="box" *ngIf="results?.length">
+    <table class="accept-results table table-fixed table-borderless table-striped">
+      <tbody>
+        <tr>
+          <th class="allowed" i18n="test-tx.is-allowed">Allowed?</th>
+          <th class="txid" i18n="dashboard.latest-transactions.txid">TXID</th>
+          <th class="rate" i18n="transaction.effective-fee-rate|Effective transaction fee rate">Effective fee rate</th>
+          <th class="reason" i18n="test-tx.rejection-reason">Rejection reason</th>
+        </tr>
+        <ng-container *ngFor="let result of results;">
+          <tr>
+            <td class="allowed">
+              <ng-container [ngSwitch]="result.allowed">
+                <span *ngSwitchCase="true">✅</span>
+                <span *ngSwitchCase="false">❌</span>
+                <span *ngSwitchDefault>-</span>
+              </ng-container>
+            </td>
+            <td class="txid">
+              <app-truncate [text]="result.txid || '-'"></app-truncate>
+            </td>
+            <td class="rate">
+              <app-fee-rate *ngIf="result.fees?.['effective-feerate'] != null" [fee]="result.fees?.['effective-feerate'] * 100000"></app-fee-rate>
+              <span *ngIf="result.fees?.['effective-feerate'] == null">-</span>
+            </td>
+            <td class="reason">
+              {{ result['reject-reason'] || '-' }}
+            </td>
+          </tr>
+        </ng-container>
+      </tbody>
+    </table>
+  </div>
+
+</div>
\ No newline at end of file
diff --git a/frontend/src/app/components/test-transactions/test-transactions.component.scss b/frontend/src/app/components/test-transactions/test-transactions.component.scss
new file mode 100644
index 000000000..ffdd5811b
--- /dev/null
+++ b/frontend/src/app/components/test-transactions/test-transactions.component.scss
@@ -0,0 +1,34 @@
+.accept-results {
+  td, th {
+    &.allowed {
+      width: 10%;
+      text-align: center;
+    }
+    &.txid {
+      width: 50%;
+    }
+    &.rate {
+      width: 20%;
+      text-align: right;
+      white-space: wrap;
+    }
+    &.reason {
+      width: 20%;
+      text-align: right;
+      white-space: wrap;
+    }
+  }
+
+  @media (max-width: 950px) {
+    table-layout: auto;
+
+    td, th {
+      &.allowed {
+        width: 100px;
+      }
+      &.txid {
+        max-width: 200px;
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/frontend/src/app/components/test-transactions/test-transactions.component.ts b/frontend/src/app/components/test-transactions/test-transactions.component.ts
new file mode 100644
index 000000000..7291dae20
--- /dev/null
+++ b/frontend/src/app/components/test-transactions/test-transactions.component.ts
@@ -0,0 +1,86 @@
+import { Component, OnInit } from '@angular/core';
+import { UntypedFormBuilder, UntypedFormGroup, Validators } from '@angular/forms';
+import { ApiService } from '../../services/api.service';
+import { StateService } from '../../services/state.service';
+import { SeoService } from '../../services/seo.service';
+import { OpenGraphService } from '../../services/opengraph.service';
+import { TestMempoolAcceptResult } from '../../interfaces/node-api.interface';
+
+@Component({
+  selector: 'app-test-transactions',
+  templateUrl: './test-transactions.component.html',
+  styleUrls: ['./test-transactions.component.scss']
+})
+export class TestTransactionsComponent implements OnInit {
+  testTxsForm: UntypedFormGroup;
+  error: string = '';
+  results: TestMempoolAcceptResult[] = [];
+  isLoading = false;
+  invalidMaxfeerate = false;
+
+  constructor(
+    private formBuilder: UntypedFormBuilder,
+    private apiService: ApiService,
+    public stateService: StateService,
+    private seoService: SeoService,
+    private ogService: OpenGraphService,
+  ) { }
+
+  ngOnInit(): void {
+    this.testTxsForm = this.formBuilder.group({
+      txs: ['', Validators.required],
+      maxfeerate: ['', Validators.min(0)]
+    });
+
+    this.seoService.setTitle($localize`:@@meta.title.test-txs:Test Transactions`);
+    this.ogService.setManualOgImage('tx-push.jpg');
+  }
+
+  testTxs() {
+    let txs: string[] = [];
+    try {
+      txs = (this.testTxsForm.get('txs')?.value as string).split(',').map(hex => hex.trim());
+      if (!txs?.length) {
+        this.error = 'At least one transaction is required';
+        return;
+      } else if (txs.length > 25) {
+        this.error = 'Exceeded maximum of 25 transactions';
+        return;
+      }
+    } catch (e) {
+      this.error = e?.message;
+      return;
+    }
+
+    let maxfeerate;
+    this.invalidMaxfeerate = false;
+    try {
+      const maxfeerateVal = this.testTxsForm.get('maxfeerate')?.value;
+      if (maxfeerateVal != null && maxfeerateVal !== '') {
+        maxfeerate = parseFloat(maxfeerateVal) / 100_000;
+      }
+    } catch (e) {
+      this.invalidMaxfeerate = true;
+    }
+
+    this.isLoading = true;
+    this.error = '';
+    this.results = [];
+    this.apiService.testTransactions$(txs, maxfeerate === 0.1 ? null : maxfeerate)
+      .subscribe((result) => {
+        this.isLoading = false;
+        this.results = result || [];
+        this.testTxsForm.reset();
+      },
+      (error) => {
+        if (typeof error.error === 'string') {
+          const matchText = error.error.match('"message":"(.*?)"');
+          this.error = matchText && matchText[1] || error.error;
+        } else if (error.message) {
+          this.error = error.message;
+        }
+        this.isLoading = false;
+      });
+  }
+
+}
diff --git a/frontend/src/app/components/theme-selector/theme-selector.component.html b/frontend/src/app/components/theme-selector/theme-selector.component.html
index 9bacaa08b..1610e816d 100644
--- a/frontend/src/app/components/theme-selector/theme-selector.component.html
+++ b/frontend/src/app/components/theme-selector/theme-selector.component.html
@@ -3,5 +3,6 @@
         <option value="default" i18n="mempool-goggles.classic">Classic</option>
         <option value="contrast">BlueMatt</option>
         <option value="wiz">wiz</option>
+        <option value="bukele">Bukele</option>
     </select>
 </div>
diff --git a/frontend/src/app/components/theme-selector/theme-selector.component.ts b/frontend/src/app/components/theme-selector/theme-selector.component.ts
index 57cbee865..be207910c 100644
--- a/frontend/src/app/components/theme-selector/theme-selector.component.ts
+++ b/frontend/src/app/components/theme-selector/theme-selector.component.ts
@@ -11,7 +11,7 @@ import { Subscription } from 'rxjs';
 })
 export class ThemeSelectorComponent implements OnInit {
   themeForm: UntypedFormGroup;
-  themes = ['default', 'contrast', 'wiz'];
+  themes = ['default', 'contrast', 'wiz', 'bukele'];
   themeSubscription: Subscription;
 
   constructor(
diff --git a/frontend/src/app/components/tracker/tracker.component.html b/frontend/src/app/components/tracker/tracker.component.html
index c75e6fec6..5f5f62a1e 100644
--- a/frontend/src/app/components/tracker/tracker.component.html
+++ b/frontend/src/app/components/tracker/tracker.component.html
@@ -1,15 +1,34 @@
 <div class="mobile-wrapper">
   <div class="mobile-container">
     <div class="panel">
-      <div class="field nav-header">
-          <app-svg-images name="officialMempoolSpace" style="width: 144px; height: 36px" width="500" height="126" viewBox="0 0 500 126"></app-svg-images>
-          <div [ngSwitch]="network" class="network-label">
+      <div class="nav-header">
+        @if (enterpriseInfo?.header_img) {
+          <a class="d-flex" [routerLink]="['/' | relativeUrl]">
+            <img *ngIf="enterpriseInfo.header_img" [src]="enterpriseInfo?.header_img" alt="enterpriseInfo.title" height="42px">
+          </a>
+        } @else if (enterpriseInfo?.img || enterpriseInfo?.imageMd5) {
+          <a [routerLink]="['/' | relativeUrl]">
+            <img [src]="enterpriseInfo.img || '/api/v1/services/enterprise/images/' + enterpriseInfo.name + '/logo?imageMd5=' + enterpriseInfo.imageMd5" class="subdomain_logo" [class]="{'rounded': enterpriseInfo.rounded_corner}">
+          </a>
+          <div class="vertical-line"></div>
+        }
+        @if (!enterpriseInfo?.header_img) {
+          <a [routerLink]="['/' | relativeUrl]">
+            <app-svg-images *ngIf="!officialMempoolSpace" name="mempoolSpace" style="width: 144px; height: 36px" viewBox="0 0 500 126" width="500" height="126" class="mempool-logo"></app-svg-images>
+            <app-svg-images *ngIf="officialMempoolSpace" name="officialMempoolSpace" style="width: 144px; height: 36px" width="500" height="126" viewBox="0 0 500 126"></app-svg-images>
+          </a>
+        }
+
+        @if (enterpriseInfo?.header_img || (!enterpriseInfo?.img && !enterpriseInfo?.imageMd5)) {
+          <div [ngSwitch]="network" class="network-label" [class.hide-name]="enterpriseInfo?.header_img">
             <span *ngSwitchCase="'signet'" class="network signet"><span class="name">Bitcoin Signet</span><app-svg-images name="signet" width="35" height="35" viewBox="0 0 65 65" style="display: inline-block" class="mainnet ml-2"></app-svg-images></span>
-            <span *ngSwitchCase="'testnet'" class="network testnet"><span class="name">Bitcoin Testnet</span><app-svg-images name="testnet" width="35" height="35" viewBox="0 0 65 65" style="display: inline-block" class="mainnet ml-2"></app-svg-images></span>
+            <span *ngSwitchCase="'testnet'" class="network testnet"><span class="name">Bitcoin Testnet3</span><app-svg-images name="testnet" width="35" height="35" viewBox="0 0 65 65" style="display: inline-block" class="mainnet ml-2"></app-svg-images></span>
+            <span *ngSwitchCase="'testnet4'" class="network testnet"><span class="name">Bitcoin Testnet4</span><app-svg-images name="testnet4" width="35" height="35" viewBox="0 0 65 65" style="display: inline-block" class="mainnet ml-2"></app-svg-images></span>
             <span *ngSwitchCase="'liquid'" class="network liquid"><span class="name">Liquid</span><app-svg-images name="liquid" width="35" height="35" viewBox="0 0 125 125" style="display: inline-block" class="mainnet ml-2"></app-svg-images></span>
             <span *ngSwitchCase="'liquidtestnet'" class="network liquidtestnet"><span class="name">Liquid Testnet</span><app-svg-images name="liquidtestnet" width="35" height="35" viewBox="0 0 125 125" style="display: inline-block" class="mainnet ml-2"></app-svg-images></span>
             <span *ngSwitchDefault class="network mainnet"><span class="name">Bitcoin</span><app-svg-images name="bitcoin" width="35" height="35" viewBox="0 0 65 65" style="display: inline-block" class="mainnet ml-2"></app-svg-images></span>
           </div>
+        }
       </div>
       <div class="field">
         <div class="label" i18n="shared.transaction">Transaction</div>
diff --git a/frontend/src/app/components/tracker/tracker.component.scss b/frontend/src/app/components/tracker/tracker.component.scss
index 90f4cbd4b..ac9992926 100644
--- a/frontend/src/app/components/tracker/tracker.component.scss
+++ b/frontend/src/app/components/tracker/tracker.component.scss
@@ -40,7 +40,14 @@
 }
 
 .nav-header {
+  display: flex;
+  flex-direction: row;
+  flex-wrap: nowrap;
+  width: 100%;
+  max-width: 100%;
+  padding: 1em;
   position: relative;
+  background: var(--nav-bg);
   box-shadow: 0 -5px 15px #000;
   z-index: 100;
   align-items: center;
@@ -53,6 +60,40 @@
       flex-direction: row;
       align-items: center;
     }
+
+    &.hide-name .name {
+      display: none;
+    }
+  }
+
+  .subdomain_logo {
+    height: 35px;
+    overflow: clip;
+    max-width: 140px;
+    margin: auto;
+    align-self: center;
+    .rounded {
+      border-radius: 5px;
+    }
+  }
+
+  .subdomain_container {
+    max-width: 140px;
+    text-align: center;
+    align-self: center;
+  }
+
+  .vertical-line {
+    border-left: 1px solid #444;
+    height: 30px;
+    margin-left: 10px;
+    margin-right: 10px;
+    margin-top: 3px;
+  }
+
+  .logo-holder {
+    display: flex;
+    flex-direction: row;
   }
 }
 
diff --git a/frontend/src/app/components/tracker/tracker.component.ts b/frontend/src/app/components/tracker/tracker.component.ts
index 484aa0070..291e2dafd 100644
--- a/frontend/src/app/components/tracker/tracker.component.ts
+++ b/frontend/src/app/components/tracker/tracker.component.ts
@@ -113,6 +113,10 @@ export class TrackerComponent implements OnInit, OnDestroy {
   scrollIntoAccelPreview = false;
   auditEnabled: boolean = this.stateService.env.AUDIT && this.stateService.env.BASE_MODULE === 'mempool' && this.stateService.env.MINING_DASHBOARD === true;
 
+  enterpriseInfo: any;
+  enterpriseInfo$: Subscription;
+  officialMempoolSpace = this.stateService.env.OFFICIAL_MEMPOOL_SPACE;
+
   constructor(
     private route: ActivatedRoute,
     private electrsApiService: ElectrsApiService,
@@ -152,6 +156,10 @@ export class TrackerComponent implements OnInit, OnDestroy {
 
     this.enterpriseService.page();
 
+    this.enterpriseInfo$ = this.enterpriseService.info$.subscribe(info => {
+      this.enterpriseInfo = info;
+    });
+
     this.websocketService.want(['blocks', 'mempool-blocks']);
     this.stateService.networkChanged$.subscribe(
       (network) => {
@@ -702,6 +710,7 @@ export class TrackerComponent implements OnInit, OnDestroy {
     this.blocksSubscription.unsubscribe();
     this.miningSubscription?.unsubscribe();
     this.currencyChangeSubscription?.unsubscribe();
+    this.enterpriseInfo$?.unsubscribe();
     this.leaveTransaction();
   }
 }
diff --git a/frontend/src/app/components/transactions-list/transactions-list.component.scss b/frontend/src/app/components/transactions-list/transactions-list.component.scss
index 2bae3de2c..7efe0ef11 100644
--- a/frontend/src/app/components/transactions-list/transactions-list.component.scss
+++ b/frontend/src/app/components/transactions-list/transactions-list.component.scss
@@ -103,7 +103,8 @@ td.amount.large {
 	margin-top: 10px;
 }
 .assetBox {
-	background-color: #653b9c90;
+	background: color-mix(in srgb, var(--tertiary) 56%, transparent);
+
 }
 
 .details-container {
diff --git a/frontend/src/app/components/tx-bowtie-graph-tooltip/tx-bowtie-graph-tooltip.component.scss b/frontend/src/app/components/tx-bowtie-graph-tooltip/tx-bowtie-graph-tooltip.component.scss
index 0c973ad00..dfb429096 100644
--- a/frontend/src/app/components/tx-bowtie-graph-tooltip/tx-bowtie-graph-tooltip.component.scss
+++ b/frontend/src/app/components/tx-bowtie-graph-tooltip/tx-bowtie-graph-tooltip.component.scss
@@ -1,6 +1,6 @@
 .bowtie-graph-tooltip {
   position: absolute;
-  background: rgba(#11131f, 0.95);
+  background: color-mix(in srgb, var(--active-bg) 95%, transparent);
   border-radius: 4px;
   box-shadow: 1px 1px 10px rgba(0,0,0,0.5);
   color: var(--tooltip-grey);
diff --git a/frontend/src/app/components/tx-bowtie-graph/tx-bowtie-graph.component.ts b/frontend/src/app/components/tx-bowtie-graph/tx-bowtie-graph.component.ts
index 9bbca05dd..f371fdf0a 100644
--- a/frontend/src/app/components/tx-bowtie-graph/tx-bowtie-graph.component.ts
+++ b/frontend/src/app/components/tx-bowtie-graph/tx-bowtie-graph.component.ts
@@ -84,18 +84,19 @@ export class TxBowtieGraphComponent implements OnInit, OnChanges {
   refreshOutspends$: ReplaySubject<string> = new ReplaySubject();
 
   gradientColors = {
-    '': ['#9339f4', '#105fb0', '#9339f400'],
+    '': ['var(--mainnet-alt)', 'var(--primary)', 'color-mix(in srgb, var(--mainnet-alt) 1%, transparent)'],
     // liquid: ['#116761', '#183550'],
     liquid: ['#09a197', '#0f62af', '#09a19700'],
     // 'liquidtestnet': ['#494a4a', '#272e46'],
     'liquidtestnet': ['#d2d2d2', '#979797', '#d2d2d200'],
     // testnet: ['#1d486f', '#183550'],
     testnet: ['#4edf77', '#10a0af', '#4edf7700'],
+    testnet4: ['#4edf77', '#10a0af', '#4edf7700'],
     // signet: ['#6f1d5d', '#471850'],
     signet: ['#d24fc8', '#a84fd2', '#d24fc800'],
   };
 
-  gradient: string[] = ['#105fb0', '#105fb0'];
+  gradient: string[] = ['var(--primary)', 'var(--primary)'];
 
   constructor(
     private router: Router,
diff --git a/frontend/src/app/dashboard/dashboard.component.scss b/frontend/src/app/dashboard/dashboard.component.scss
index 84eabead2..9ad09981f 100644
--- a/frontend/src/app/dashboard/dashboard.component.scss
+++ b/frontend/src/app/dashboard/dashboard.component.scss
@@ -301,7 +301,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
@@ -435,7 +436,8 @@
 
 .in-progress-message {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: 20px;
   text-align: center;
   padding-bottom: 3px;
diff --git a/frontend/src/app/docs/api-docs/api-docs-data.ts b/frontend/src/app/docs/api-docs/api-docs-data.ts
index f4b4dfe04..c337b7520 100644
--- a/frontend/src/app/docs/api-docs/api-docs-data.ts
+++ b/frontend/src/app/docs/api-docs/api-docs-data.ts
@@ -1,5 +1,6 @@
-const bitcoinNetworks = ["", "testnet", "signet"];
+const bitcoinNetworks = ["", "testnet", "testnet4", "signet"];
 const liquidNetworks = ["liquid", "liquidtestnet"];
+const lightningNetworks = ["", "testnet", "signet"];
 const miningTimeIntervals = "<code>24h</code>, <code>3d</code>, <code>1w</code>, <code>1m</code>, <code>3m</code>, <code>6m</code>, <code>1y</code>, <code>2y</code>, <code>3y</code>";
 
 const emptyCodeSample = {
@@ -6513,7 +6514,7 @@ export const restApiDocsData = [
     category: "lightning",
     fragment: "lightning",
     title: "Lightning",
-    showConditions: bitcoinNetworks
+    showConditions: lightningNetworks
   },
   {
     type: "endpoint",
@@ -6525,7 +6526,7 @@ export const restApiDocsData = [
       default: "<p>Returns network-wide stats such as total number of channels and nodes, total capacity, and average/median fee figures.</p><p>Pass one of the following for <code>:interval</code>: <code>latest</code>, <code>24h</code>, <code>3d</code>, <code>1w</code>, <code>1m</code>, <code>3m</code>, <code>6m</code>, <code>1y</code>, <code>2y</code>, <code>3y</code>.</p>"
     },
     urlString: "/v1/lightning/statistics/:interval",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -6621,7 +6622,7 @@ export const restApiDocsData = [
       default: "<p>Returns Lightning nodes and channels that match a full-text, case-insensitive search <code>:query</code> across node aliases, node pubkeys, channel IDs, and short channel IDs.</p>"
     },
     urlString: "/v1/lightning/search?searchText=:query",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -6706,7 +6707,7 @@ export const restApiDocsData = [
       default: "<p>Returns a list of Lightning nodes running on clearnet in the requested <code>:country</code>, where <code>:country</code> is an ISO Alpha-2 country code.</p>"
     },
     urlString: "/v1/lightning/nodes/country/:country",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -6928,7 +6929,7 @@ export const restApiDocsData = [
       default: "<p>Returns aggregate capacity and number of clearnet nodes per country. Capacity figures are in satoshis.</p>"
     },
     urlString: "/v1/lightning/nodes/countries",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -7072,7 +7073,7 @@ export const restApiDocsData = [
       default: "<p>Returns a list of nodes hosted by a specified <code>:isp</code>, where <code>:isp</code> is an ISP's ASN.</p>"
     },
     urlString: "/v1/lightning/nodes/isp/:isp",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -7191,7 +7192,7 @@ export const restApiDocsData = [
       default: "<p>Returns aggregate capacity, number of nodes, and number of channels per ISP. Capacity figures are in satoshis.</p>"
     },
     urlString: "/v1/lightning/nodes/isp-ranking",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -7303,7 +7304,7 @@ export const restApiDocsData = [
       default: "<p>Returns two lists of the top 100 nodes: one ordered by liquidity (aggregate channel capacity) and the other ordered by connectivity (number of open channels).</p>"
     },
     urlString: "/v1/lightning/nodes/rankings",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -7426,7 +7427,7 @@ export const restApiDocsData = [
       default: "<p>Returns a list of the top 100 nodes by liquidity (aggregate channel capacity).</p>"
     },
     urlString: "/v1/lightning/nodes/rankings/liquidity",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -7623,7 +7624,7 @@ export const restApiDocsData = [
       default: "<p>Returns a list of the top 100 nodes by connectivity (number of open channels).</p>"
     },
     urlString: "/v1/lightning/nodes/rankings/connectivity",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -7819,7 +7820,7 @@ export const restApiDocsData = [
       default: "<p>Returns a list of the top 100 oldest nodes.</p>"
     },
     urlString: "/v1/lightning/nodes/rankings/age",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -8006,7 +8007,7 @@ export const restApiDocsData = [
       default: "<p>Returns details about a node with the given <code>:pubKey</code>.</p>"
     },
     urlString: "/v1/lightning/nodes/:pubKey",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -8170,7 +8171,7 @@ export const restApiDocsData = [
       default: "<p>Returns historical stats for a node with the given <code>:pubKey</code>.</p>"
     },
     urlString: "/v1/lightning/nodes/:pubKey/statistics",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -8268,7 +8269,7 @@ export const restApiDocsData = [
       default: "<p>Returns info about a Lightning channel with the given <code>:channelId</code>.</p>"
     },
     urlString: "/v1/lightning/channels/:channelId",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -8433,7 +8434,7 @@ export const restApiDocsData = [
       default: "<p>Returns channels that correspond to the given <code>:txid</code> (multiple transaction IDs can be specified).</p>"
     },
     urlString: "/v1/lightning/channels/txids?txId[]=:txid",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -8634,7 +8635,7 @@ export const restApiDocsData = [
       default: "<p>Returns a list of a node's channels given its <code>:pubKey</code>. Ten channels are returned at a time. Use <code>:index</code> for paging. <code>:channelStatus</code> can be <code>open</code>, <code>active</code>, or <code>closed</code>.</p>"
     },
     urlString: "/v1/lightning/channels?public_key=:pubKey&status=:channelStatus",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -8770,7 +8771,7 @@ export const restApiDocsData = [
       default: "<p>Returns a list of channels with corresponding node geodata.</p>"
     },
     urlString: "/v1/lightning/channels-geo",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
@@ -8878,7 +8879,7 @@ export const restApiDocsData = [
       default: "<p>Returns a list of channels with corresponding geodata for a node with the given <code>:pubKey</code>.</p>"
     },
     urlString: "/v1/lightning/channels-geo/:pubKey",
-    showConditions: bitcoinNetworks,
+    showConditions: lightningNetworks,
     showJsExamples: showJsExamplesDefaultFalse,
     codeExample: {
       default: {
diff --git a/frontend/src/app/docs/api-docs/api-docs.component.html b/frontend/src/app/docs/api-docs/api-docs.component.html
index a6a98018d..f6fad9ee3 100644
--- a/frontend/src/app/docs/api-docs/api-docs.component.html
+++ b/frontend/src/app/docs/api-docs/api-docs.component.html
@@ -133,7 +133,7 @@
           <p>{{electrsPort}}</p>
           <p class="subtitle">SSL</p>
           <p>Enabled</p>
-          <p class="note" *ngIf="network.val !== 'signet'">Electrum RPC interface for Bitcoin Signet is <a href="/signet/docs/api/electrs">publicly available</a>. Electrum RPC interface for all other networks is available to <a href='https://mempool.space/enterprise'>sponsors</a> only—whitelisting is required.</p>
+          <p class="note" *ngIf="network.val !== 'signet' && network.val !== 'testnet4'">Electrum RPC interface for <a href="/signet/docs/api/electrs">Bitcoin Signet</a> and <a href="/testnet4/docs/api/electrs">Bitcoin Testnet4</a> is publicly available. Electrum RPC interface for all other networks is available to <a href='https://mempool.space/enterprise'>sponsors</a> only—whitelisting is required.</p>
         </div>
       </div>
     </div>
diff --git a/frontend/src/app/docs/api-docs/api-docs.component.ts b/frontend/src/app/docs/api-docs/api-docs.component.ts
index dd2681ca8..76d9de8d0 100644
--- a/frontend/src/app/docs/api-docs/api-docs.component.ts
+++ b/frontend/src/app/docs/api-docs/api-docs.component.ts
@@ -102,6 +102,8 @@ export class ApiDocsComponent implements OnInit, AfterViewInit {
           this.electrsPort = 50002; break;
         case "testnet":
           this.electrsPort = 60002; break;
+        case "testnet4":
+          this.electrsPort = 40002; break;
         case "signet":
           this.electrsPort = 60602; break;
         case "liquid":
@@ -170,6 +172,9 @@ export class ApiDocsComponent implements OnInit, AfterViewInit {
     if (network === 'testnet') {
       curlResponse = code.codeSampleTestnet.curl;
     }
+    if (network === 'testnet4') {
+      curlResponse = code.codeSampleTestnet.curl;
+    }
     if (network === 'signet') {
       curlResponse = code.codeSampleSignet.curl;
     }
diff --git a/frontend/src/app/docs/code-template/code-template.component.ts b/frontend/src/app/docs/code-template/code-template.component.ts
index 395f6a297..bd03f5b16 100644
--- a/frontend/src/app/docs/code-template/code-template.component.ts
+++ b/frontend/src/app/docs/code-template/code-template.component.ts
@@ -111,7 +111,10 @@ export class CodeTemplateComponent implements OnInit {
         codeText = this.replaceJSPlaceholder(codeText, code.codeSampleMainnet.esModule);
       }
       if (this.network === 'testnet') {
-      codeText = this.replaceJSPlaceholder(codeText, code.codeSampleTestnet.esModule);
+        codeText = this.replaceJSPlaceholder(codeText, code.codeSampleTestnet.esModule);
+      }
+      if (this.network === 'testnet4') {
+        codeText = this.replaceJSPlaceholder(codeText, code.codeSampleTestnet.esModule);
       }
       if (this.network === 'signet') {
         codeText = this.replaceJSPlaceholder(codeText, code.codeSampleSignet.esModule);
@@ -144,7 +147,10 @@ init();`;
         codeText = this.replaceJSPlaceholder(codeText, code.codeSampleMainnet.esModule);
       }
       if (this.network === 'testnet') {
-      codeText = this.replaceJSPlaceholder(codeText, code.codeSampleTestnet.esModule);
+        codeText = this.replaceJSPlaceholder(codeText, code.codeSampleTestnet.esModule);
+      }
+      if (this.network === 'testnet4') {
+        codeText = this.replaceJSPlaceholder(codeText, code.codeSampleTestnet.esModule);
       }
       if (this.network === 'signet') {
         codeText = this.replaceJSPlaceholder(codeText, code.codeSampleSignet.esModule);
@@ -212,6 +218,9 @@ yarn add @mempool/liquid.js`;
       if (this.network === 'testnet') {
         return this.replaceCurlPlaceholder(code.codeTemplate.curl, code.codeSampleTestnet);
       }
+      if (this.network === 'testnet4') {
+        return this.replaceCurlPlaceholder(code.codeTemplate.curl, code.codeSampleTestnet);
+      }
       if (this.network === 'signet') {
         return this.replaceCurlPlaceholder(code.codeTemplate.curl, code.codeSampleSignet);
       }
@@ -234,6 +243,9 @@ yarn add @mempool/liquid.js`;
     if (this.network === 'testnet') {
       return code.codeSampleTestnet.response;
     }
+    if (this.network === 'testnet4') {
+      return code.codeSampleTestnet.response;
+    }
     if (this.network === 'signet') {
       return code.codeSampleSignet.response;
     }
@@ -247,7 +259,7 @@ yarn add @mempool/liquid.js`;
   }
 
   wrapPythonTemplate(code: any) {
-    return ( ( this.network === 'testnet' || this.network === 'signet' ) ? ( code.codeTemplate.python.replace( "wss://mempool.space/api/v1/ws", "wss://mempool.space/" + this.network + "/api/v1/ws" ) ) : code.codeTemplate.python );
+    return ( ( this.network === 'testnet' || this.network === 'testnet4' || this.network === 'signet' ) ? ( code.codeTemplate.python.replace( "wss://mempool.space/api/v1/ws", "wss://mempool.space/" + this.network + "/api/v1/ws" ) ) : code.codeTemplate.python );
   }
 
   replaceJSPlaceholder(text: string, code: any) {
diff --git a/frontend/src/app/interfaces/node-api.interface.ts b/frontend/src/app/interfaces/node-api.interface.ts
index 343d43a2e..ed7f5d9d4 100644
--- a/frontend/src/app/interfaces/node-api.interface.ts
+++ b/frontend/src/app/interfaces/node-api.interface.ts
@@ -423,4 +423,17 @@ export interface AccelerationInfo {
   effective_fee: number,
   boost_rate: number,
   boost_cost: number,
+}
+
+export interface TestMempoolAcceptResult {
+  txid: string,
+  wtxid: string,
+  allowed?: boolean,
+  vsize?: number,
+  fees?: {
+    base: number,
+    "effective-feerate": number,
+    "effective-includes": string[],
+  },
+  ['reject-reason']?: string,
 }
\ No newline at end of file
diff --git a/frontend/src/app/interfaces/websocket.interface.ts b/frontend/src/app/interfaces/websocket.interface.ts
index daf06603f..22789986e 100644
--- a/frontend/src/app/interfaces/websocket.interface.ts
+++ b/frontend/src/app/interfaces/websocket.interface.ts
@@ -1,7 +1,7 @@
 import { SafeResourceUrl } from '@angular/platform-browser';
 import { ILoadingIndicators } from '../services/state.service';
 import { Transaction } from './electrs.interface';
-import { BlockExtended, DifficultyAdjustment, RbfTree, TransactionStripped } from './node-api.interface';
+import { Acceleration, BlockExtended, DifficultyAdjustment, RbfTree, TransactionStripped } from './node-api.interface';
 
 export interface WebsocketResponse {
   backend?: 'esplora' | 'electrum' | 'none';
@@ -35,6 +35,7 @@ export interface WebsocketResponse {
   'track-mempool-block'?: number;
   'track-rbf'?: string;
   'track-rbf-summary'?: boolean;
+  'track-accelerations'?: boolean;
   'watch-mempool'?: boolean;
   'refresh-blocks'?: boolean;
 }
@@ -75,6 +76,16 @@ export interface MempoolBlockDelta {
   removed: string[];
   changed: { txid: string, rate: number, flags: number, acc: boolean }[];
 }
+export interface MempoolBlockState {
+  transactions: TransactionStripped[];
+}
+export type MempoolBlockUpdate = MempoolBlockDelta | MempoolBlockState;
+export function isMempoolState(update: MempoolBlockUpdate): update is MempoolBlockState {
+  return update['transactions'] !== undefined;
+}
+export function isMempoolDelta(update: MempoolBlockUpdate): update is MempoolBlockDelta {
+  return update['transactions'] === undefined;
+}
 
 export interface MempoolBlockDeltaCompressed {
   added: TransactionCompressed[];
@@ -82,6 +93,12 @@ export interface MempoolBlockDeltaCompressed {
   changed: MempoolDeltaChange[];
 }
 
+export interface AccelerationDelta {
+  added: Acceleration[];
+  removed: string[];
+  reset?: boolean;
+}
+
 export interface MempoolInfo {
   loaded: boolean;                 //  (boolean) True if the mempool is fully loaded
   size: number;                    //  (numeric) Current tx count
diff --git a/frontend/src/app/lightning/lightning-dashboard/lightning-dashboard.component.scss b/frontend/src/app/lightning/lightning-dashboard/lightning-dashboard.component.scss
index 7fb011146..f125b30c1 100644
--- a/frontend/src/app/lightning/lightning-dashboard/lightning-dashboard.component.scss
+++ b/frontend/src/app/lightning/lightning-dashboard/lightning-dashboard.component.scss
@@ -66,7 +66,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/lightning/nodes-networks-chart/nodes-networks-chart.component.scss b/frontend/src/app/lightning/nodes-networks-chart/nodes-networks-chart.component.scss
index ab8cb92da..a747586ad 100644
--- a/frontend/src/app/lightning/nodes-networks-chart/nodes-networks-chart.component.scss
+++ b/frontend/src/app/lightning/nodes-networks-chart/nodes-networks-chart.component.scss
@@ -11,7 +11,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/lightning/statistics-chart/lightning-statistics-chart.component.scss b/frontend/src/app/lightning/statistics-chart/lightning-statistics-chart.component.scss
index 1779394c9..165c513e5 100644
--- a/frontend/src/app/lightning/statistics-chart/lightning-statistics-chart.component.scss
+++ b/frontend/src/app/lightning/statistics-chart/lightning-statistics-chart.component.scss
@@ -11,7 +11,8 @@
 
 .main-title {
   position: relative;
-  color: #ffffff91;
+  color: var(--fg);
+  opacity: var(--opacity);
   margin-top: -13px;
   font-size: 10px;
   text-transform: uppercase;
diff --git a/frontend/src/app/master-page.module.ts b/frontend/src/app/master-page.module.ts
index 018809d59..2d3c34a56 100644
--- a/frontend/src/app/master-page.module.ts
+++ b/frontend/src/app/master-page.module.ts
@@ -6,6 +6,7 @@ import { SharedModule } from './shared/shared.module';
 
 import { StartComponent } from './components/start/start.component';
 import { PushTransactionComponent } from './components/push-transaction/push-transaction.component';
+import { TestTransactionsComponent } from './components/test-transactions/test-transactions.component';
 import { CalculatorComponent } from './components/calculator/calculator.component';
 import { BlocksList } from './components/blocks-list/blocks-list.component';
 import { RbfList } from './components/rbf-list/rbf-list.component';
@@ -30,6 +31,10 @@ const routes: Routes = [
         path: 'tx/push',
         component: PushTransactionComponent,
       },
+      {
+        path: 'tx/test',
+        component: TestTransactionsComponent,
+      },
       {
         path: 'about',
         loadChildren: () => import('./components/about/about.module').then(m => m.AboutModule),
diff --git a/frontend/src/app/services/api.service.ts b/frontend/src/app/services/api.service.ts
index 145a8705e..0531916a0 100644
--- a/frontend/src/app/services/api.service.ts
+++ b/frontend/src/app/services/api.service.ts
@@ -1,7 +1,7 @@
 import { Injectable } from '@angular/core';
 import { HttpClient, HttpParams, HttpResponse } from '@angular/common/http';
-import { CpfpInfo, OptimizedMempoolStats, AddressInformation, LiquidPegs, ITranslators,
-  PoolStat, BlockExtended, TransactionStripped, RewardStats, AuditScore, BlockSizesAndWeights, RbfTree, BlockAudit, Acceleration, AccelerationHistoryParams, CurrentPegs, AuditStatus, FederationAddress, FederationUtxo, RecentPeg, PegsVolume, AccelerationInfo } from '../interfaces/node-api.interface';
+import { CpfpInfo, OptimizedMempoolStats, AddressInformation, LiquidPegs, ITranslators, PoolStat, BlockExtended, TransactionStripped, RewardStats, AuditScore, BlockSizesAndWeights,
+  RbfTree, BlockAudit, CurrentPegs, AuditStatus, FederationAddress, FederationUtxo, RecentPeg, PegsVolume, AccelerationInfo, TestMempoolAcceptResult } from '../interfaces/node-api.interface';
 import { BehaviorSubject, Observable, catchError, filter, map, of, shareReplay, take, tap } from 'rxjs';
 import { StateService } from './state.service';
 import { Transaction } from '../interfaces/electrs.interface';
@@ -238,6 +238,10 @@ export class ApiService {
     return this.httpClient.post<any>(this.apiBaseUrl + this.apiBasePath + '/api/tx', hexPayload, { responseType: 'text' as 'json'});
   }
 
+  testTransactions$(rawTxs: string[], maxfeerate?: number): Observable<TestMempoolAcceptResult[]> {
+    return this.httpClient.post<TestMempoolAcceptResult[]>(this.apiBaseUrl + this.apiBasePath + `/api/txs/test${maxfeerate != null ? '?maxfeerate=' + maxfeerate.toFixed(8) : ''}`, rawTxs);
+  }
+
   getTransactionStatus$(txid: string): Observable<any> {
     return this.httpClient.get<any>(this.apiBaseUrl + this.apiBasePath + '/api/tx/' + txid + '/status');
   }
diff --git a/frontend/src/app/services/enterprise.service.ts b/frontend/src/app/services/enterprise.service.ts
index 5de57b059..4ea890f1f 100644
--- a/frontend/src/app/services/enterprise.service.ts
+++ b/frontend/src/app/services/enterprise.service.ts
@@ -41,6 +41,7 @@ export class EnterpriseService {
 
   disableSubnetworks(): void {
     this.stateService.env.TESTNET_ENABLED = false;
+    this.stateService.env.TESTNET4_ENABLED = false;
     this.stateService.env.LIQUID_ENABLED = false;
     this.stateService.env.LIQUID_TESTNET_ENABLED = false;
     this.stateService.env.SIGNET_ENABLED = false;
diff --git a/frontend/src/app/services/mining.service.ts b/frontend/src/app/services/mining.service.ts
index 96723921e..952d13a78 100644
--- a/frontend/src/app/services/mining.service.ts
+++ b/frontend/src/app/services/mining.service.ts
@@ -58,7 +58,7 @@ export class MiningService {
     // I think it's fine to hardcode this since we don't have x1000 hashrate jump everyday
     // If we want to support the mining dashboard for testnet, we can hardcode it too
     let selectedPower = 18;
-    if (this.stateService.network === 'testnet') {
+    if (this.stateService.network === 'testnet' || this.stateService.network === 'testnet4') {
       selectedPower = 12;
     }
 
diff --git a/frontend/src/app/services/navigation.service.ts b/frontend/src/app/services/navigation.service.ts
index 2db3f6025..1a22c1371 100644
--- a/frontend/src/app/services/navigation.service.ts
+++ b/frontend/src/app/services/navigation.service.ts
@@ -9,6 +9,7 @@ const networkModules = {
     subnets: [
       { name: 'mainnet', path: '' },
       { name: 'testnet', path: '/testnet' },
+      { name: 'testnet4', path: '/testnet4' },
       { name: 'signet', path: '/signet' },
     ],
   },
@@ -68,7 +69,7 @@ export class NavigationService {
       }
       if (route.url?.length) {
         path = [path, ...route.url.map(segment => segment.path).filter(path => {
-          return path.length && !['testnet', 'signet'].includes(path);
+          return path.length && !['testnet', 'testnet4', 'signet'].includes(path);
         })].join('/');
       }
       route = route.firstChild;
diff --git a/frontend/src/app/services/seo.service.ts b/frontend/src/app/services/seo.service.ts
index 008cdc9bc..1431a52d8 100644
--- a/frontend/src/app/services/seo.service.ts
+++ b/frontend/src/app/services/seo.service.ts
@@ -81,7 +81,9 @@ export class SeoService {
 
   getTitle(): string {
     if (this.network === 'testnet')
-      return this.baseTitle + ' - Bitcoin Testnet';
+      return this.baseTitle + ' - Bitcoin Testnet3';
+    if (this.network === 'testnet4')
+      return this.baseTitle + ' - Bitcoin Testnet4';
     if (this.network === 'signet')
       return this.baseTitle + ' - Bitcoin Signet';
     if (this.network === 'liquid')
@@ -92,7 +94,7 @@ export class SeoService {
   }
 
   getDescription(): string {
-    if ( (this.network === 'testnet') || (this.network === 'signet') || (this.network === '') || (this.network == 'mainnet') )
+    if ( (this.network === 'testnet') || (this.network === 'testnet4') || (this.network === 'signet') || (this.network === '') || (this.network == 'mainnet') )
       return this.baseDescription + ' See the real-time status of your transactions, browse network stats, and more.';
     if ( (this.network === 'liquid') || (this.network === 'liquidtestnet') )
       return this.baseDescription + ' See Liquid transactions & assets, get network info, and more.';
diff --git a/frontend/src/app/services/state.service.ts b/frontend/src/app/services/state.service.ts
index 529e53ff0..742ca7ab1 100644
--- a/frontend/src/app/services/state.service.ts
+++ b/frontend/src/app/services/state.service.ts
@@ -1,8 +1,8 @@
 import { Inject, Injectable, PLATFORM_ID, LOCALE_ID } from '@angular/core';
-import { ReplaySubject, BehaviorSubject, Subject, fromEvent, Observable, merge } from 'rxjs';
+import { ReplaySubject, BehaviorSubject, Subject, fromEvent, Observable } from 'rxjs';
 import { Transaction } from '../interfaces/electrs.interface';
-import { HealthCheckHost, IBackendInfo, MempoolBlock, MempoolBlockDelta, MempoolInfo, Recommendedfees, ReplacedTransaction, ReplacementInfo } from '../interfaces/websocket.interface';
-import { BlockExtended, CpfpInfo, DifficultyAdjustment, MempoolPosition, OptimizedMempoolStats, RbfTree, TransactionStripped } from '../interfaces/node-api.interface';
+import { AccelerationDelta, HealthCheckHost, IBackendInfo, MempoolBlock, MempoolBlockUpdate, MempoolInfo, Recommendedfees, ReplacedTransaction, ReplacementInfo, isMempoolState } from '../interfaces/websocket.interface';
+import { Acceleration, BlockExtended, CpfpInfo, DifficultyAdjustment, MempoolPosition, OptimizedMempoolStats, RbfTree, TransactionStripped } from '../interfaces/node-api.interface';
 import { Router, NavigationStart } from '@angular/router';
 import { isPlatformBrowser } from '@angular/common';
 import { filter, map, scan, shareReplay } from 'rxjs/operators';
@@ -27,7 +27,9 @@ export interface Customization {
     name: string;
     site_id?: number;
     title: string;
-    img: string;
+    img?: string;
+    header_img?: string;
+    footer_img?: string;
     rounded_corner: boolean;
   },
   dashboard: {
@@ -41,6 +43,7 @@ export interface Customization {
 
 export interface Env {
   TESTNET_ENABLED: boolean;
+  TESTNET4_ENABLED: boolean;
   SIGNET_ENABLED: boolean;
   LIQUID_ENABLED: boolean;
   LIQUID_TESTNET_ENABLED: boolean;
@@ -74,6 +77,7 @@ export interface Env {
 
 const defaultEnv: Env = {
   'TESTNET_ENABLED': false,
+  'TESTNET4_ENABLED': false,
   'SIGNET_ENABLED': false,
   'LIQUID_ENABLED': false,
   'LIQUID_TESTNET_ENABLED': false,
@@ -128,9 +132,10 @@ export class StateService {
   bsqPrice$ = new ReplaySubject<number>(1);
   mempoolInfo$ = new ReplaySubject<MempoolInfo>(1);
   mempoolBlocks$ = new ReplaySubject<MempoolBlock[]>(1);
-  mempoolBlockTransactions$ = new Subject<TransactionStripped[]>();
-  mempoolBlockDelta$ = new Subject<MempoolBlockDelta>();
+  mempoolBlockUpdate$ = new Subject<MempoolBlockUpdate>();
   liveMempoolBlockTransactions$: Observable<{ [txid: string]: TransactionStripped}>;
+  accelerations$ = new Subject<AccelerationDelta>();
+  liveAccelerations$: Observable<Acceleration[]>;
   txConfirmed$ = new Subject<[string, BlockExtended]>();
   txReplaced$ = new Subject<ReplacedTransaction>();
   txRbfInfo$ = new Subject<RbfTree>();
@@ -216,30 +221,48 @@ export class StateService {
       this.router.navigate(['/tracker/' + window.location.pathname.slice(4)]);
     }
 
-    this.liveMempoolBlockTransactions$ = merge(
-      this.mempoolBlockTransactions$.pipe(map(transactions => { return { transactions }; })),
-      this.mempoolBlockDelta$.pipe(map(delta => { return { delta }; })),
-    ).pipe(scan((transactions: { [txid: string]: TransactionStripped }, change: any): { [txid: string]: TransactionStripped } => {
-      if (change.transactions) {
-        const txMap = {}
+    this.liveMempoolBlockTransactions$ = this.mempoolBlockUpdate$.pipe(scan((transactions: { [txid: string]: TransactionStripped }, change: MempoolBlockUpdate): { [txid: string]: TransactionStripped } => {
+      if (isMempoolState(change)) {
+        const txMap = {};
         change.transactions.forEach(tx => {
           txMap[tx.txid] = tx;
-        })
+        });
         return txMap;
       } else {
-        change.delta.changed.forEach(tx => {
-          transactions[tx.txid].rate = tx.rate;
-        })
-        change.delta.removed.forEach(txid => {
+        change.added.forEach(tx => {
+          transactions[tx.txid] = tx;
+        });
+        change.removed.forEach(txid => {
           delete transactions[txid];
         });
-        change.delta.added.forEach(tx => {
-          transactions[tx.txid] = tx;
+        change.changed.forEach(tx => {
+          if (transactions[tx.txid]) {
+            transactions[tx.txid].rate = tx.rate;
+            transactions[tx.txid].acc = tx.acc;
+          }
         });
         return transactions;
       }
     }, {}));
 
+    // Emits the full list of pending accelerations each time it changes
+    this.liveAccelerations$ = this.accelerations$.pipe(
+      scan((accelerations: { [txid: string]: Acceleration }, delta: AccelerationDelta) => {
+        if (delta.reset) {
+          accelerations = {};
+        } else {
+          for (const txid of delta.removed) {
+            delete accelerations[txid];
+          }
+        }
+        for (const acc of delta.added) {
+          accelerations[acc.txid] = acc;
+        }
+        return accelerations;
+      }, {}),
+      map((accMap) => Object.values(accMap).sort((a,b) => b.added - a.added))
+    );
+
     this.networkChanged$.subscribe((network) => {
       this.transactions$ = new BehaviorSubject<TransactionStripped[]>(null);
       this.blocksSubject$.next([]);
@@ -280,7 +303,7 @@ export class StateService {
     this.rateUnits$ = new BehaviorSubject<string>(rateUnitPreference || 'vb');
 
     const blockDisplayModePreference = this.storageService.getValue('block-display-mode-preference');
-    this.blockDisplayMode$ = new BehaviorSubject<string>(blockDisplayModePreference || 'size');
+    this.blockDisplayMode$ = new BehaviorSubject<string>(blockDisplayModePreference || 'fees');
 
     const viewAmountModePreference = this.storageService.getValue('view-amount-mode') as 'btc' | 'sats' | 'fiat';
     this.viewAmountMode$ = new BehaviorSubject<'btc' | 'sats' | 'fiat'>(viewAmountModePreference || 'btc');
@@ -300,7 +323,7 @@ export class StateService {
     // (?:preview\/)?                               optional "preview" prefix (non-capturing)
     // (testnet|signet)/                            network string (captured as networkMatches[1])
     // ($|\/)                                       network string must end or end with a slash
-    const networkMatches = url.match(/^\/(?:[a-z]{2}(?:-[A-Z]{2})?\/)?(?:preview\/)?(testnet|signet)($|\/)/);
+    const networkMatches = url.match(/^\/(?:[a-z]{2}(?:-[A-Z]{2})?\/)?(?:preview\/)?(testnet4?|signet)($|\/)/);
     switch (networkMatches && networkMatches[1]) {
       case 'signet':
         if (this.network !== 'signet') {
@@ -319,6 +342,12 @@ export class StateService {
           }
         }
         return;
+      case 'testnet4':
+        if (this.network !== 'testnet4') {
+          this.network = 'testnet4';
+          this.networkChanged$.next('testnet4');
+        }
+        return;
       default:
         if (this.env.BASE_MODULE !== 'mempool') {
           if (this.network !== this.env.BASE_MODULE) {
@@ -367,7 +396,7 @@ export class StateService {
   }
 
   isAnyTestnet(): boolean {
-    return ['testnet', 'signet', 'liquidtestnet'].includes(this.network);
+    return ['testnet', 'testnet4', 'signet', 'liquidtestnet'].includes(this.network);
   }
 
   resetChainTip() {
diff --git a/frontend/src/app/services/theme.service.ts b/frontend/src/app/services/theme.service.ts
index 7981f37a3..0a0fdc505 100644
--- a/frontend/src/app/services/theme.service.ts
+++ b/frontend/src/app/services/theme.service.ts
@@ -17,14 +17,14 @@ export class ThemeService {
     private storageService: StorageService,
     private stateService: StateService,
   ) {
-    const theme = this.storageService.getValue('theme-preference') || this.stateService.env.customize?.theme || 'default';
+    const theme = this.stateService.env.customize?.theme || this.storageService.getValue('theme-preference') || 'default';
     this.apply(theme);
   }
 
   apply(theme) {
     this.theme = theme;
     if (theme !== 'default') {
-      theme === 'contrast' ? this.mempoolFeeColors = contrastMempoolFeeColors : this.mempoolFeeColors = defaultMempoolFeeColors;
+      theme === 'contrast'  || theme === 'bukele' ? this.mempoolFeeColors = contrastMempoolFeeColors : this.mempoolFeeColors = defaultMempoolFeeColors;
       try {
         if (!this.style) {
           this.style = document.createElement('link');
@@ -44,7 +44,9 @@ export class ThemeService {
         this.style = null;
       }
     }
-    this.storageService.setValue('theme-preference', theme);
+    if (!this.stateService.env.customize?.theme) {
+      this.storageService.setValue('theme-preference', theme);
+    }
     this.themeChanged$.next(this.theme);
   }
 }
diff --git a/frontend/src/app/services/websocket.service.ts b/frontend/src/app/services/websocket.service.ts
index 414f60bc5..fbadf0de3 100644
--- a/frontend/src/app/services/websocket.service.ts
+++ b/frontend/src/app/services/websocket.service.ts
@@ -33,6 +33,7 @@ export class WebsocketService {
   private isTrackingRbfSummary = false;
   private isTrackingAddress: string | false = false;
   private isTrackingAddresses: string[] | false = false;
+  private isTrackingAccelerations: boolean = false;
   private trackingMempoolBlock: number;
   private latestGitCommit = '';
   private onlineCheckTimeout: number;
@@ -132,6 +133,9 @@ export class WebsocketService {
           if (this.isTrackingAddresses) {
             this.startTrackAddresses(this.isTrackingAddresses);
           }
+          if (this.isTrackingAccelerations) {
+            this.startTrackAccelerations();
+          }
           this.stateService.connectionState$.next(2);
         }
 
@@ -235,6 +239,24 @@ export class WebsocketService {
     this.isTrackingRbfSummary = false;
   }
 
+  startTrackAccelerations() {
+    this.websocketSubject.next({ 'track-accelerations': true });
+    this.isTrackingAccelerations = true;
+  }
+
+  stopTrackAccelerations() {
+    if (this.isTrackingAccelerations) {
+      this.websocketSubject.next({ 'track-accelerations': false });
+      this.isTrackingAccelerations = false;
+    }
+  }
+
+  ensureTrackAccelerations() {
+    if (!this.isTrackingAccelerations) {
+      this.startTrackAccelerations();
+    }
+  }
+
   fetchStatistics(historicalDate: string) {
     this.websocketSubject.next({ historicalDate });
   }
@@ -401,19 +423,33 @@ export class WebsocketService {
       if (response['projected-block-transactions'].index == this.trackingMempoolBlock) {
         if (response['projected-block-transactions'].blockTransactions) {
           this.stateService.mempoolSequence = response['projected-block-transactions'].sequence;
-          this.stateService.mempoolBlockTransactions$.next(response['projected-block-transactions'].blockTransactions.map(uncompressTx));
+          this.stateService.mempoolBlockUpdate$.next({
+            transactions: response['projected-block-transactions'].blockTransactions.map(uncompressTx),
+          });
         } else if (response['projected-block-transactions'].delta) {
           if (this.stateService.mempoolSequence && response['projected-block-transactions'].sequence !== this.stateService.mempoolSequence + 1) {
             this.stateService.mempoolSequence = 0;
             this.startTrackMempoolBlock(this.trackingMempoolBlock, true);
           } else {
             this.stateService.mempoolSequence = response['projected-block-transactions'].sequence;
-            this.stateService.mempoolBlockDelta$.next(uncompressDeltaChange(response['projected-block-transactions'].delta));
+            this.stateService.mempoolBlockUpdate$.next(uncompressDeltaChange(response['projected-block-transactions'].delta));
           }
         }
       }
     }
 
+    if (response['accelerations']) {
+      if (response['accelerations'].accelerations) {
+        this.stateService.accelerations$.next({
+          added: response['accelerations'].accelerations,
+          removed: [],
+          reset: true,
+        });
+      } else {
+        this.stateService.accelerations$.next(response['accelerations']);
+      }
+    }
+
     if (response['live-2h-chart']) {
       this.stateService.live2Chart$.next(response['live-2h-chart']);
     }
diff --git a/frontend/src/app/shared/common.utils.ts b/frontend/src/app/shared/common.utils.ts
index be1e32c73..28e510e14 100644
--- a/frontend/src/app/shared/common.utils.ts
+++ b/frontend/src/app/shared/common.utils.ts
@@ -151,7 +151,7 @@ export function nextRoundNumber(num: number): number {
 export function seoDescriptionNetwork(network: string): string {
   if( network === 'liquidtestnet' || network === 'testnet' ) {
     return ' Testnet';
-  } else if( network === 'signet' || network === 'testnet' ) {
+  } else if( network === 'signet' || network === 'testnet' || network === 'testnet4') {
     return ' ' + network.charAt(0).toUpperCase() + network.slice(1);
   }
   return '';
diff --git a/frontend/src/app/shared/components/btc/btc.component.html b/frontend/src/app/shared/components/btc/btc.component.html
index c13a8ff31..e002489f5 100644
--- a/frontend/src/app/shared/components/btc/btc.component.html
+++ b/frontend/src/app/shared/components/btc/btc.component.html
@@ -4,5 +4,6 @@
   <ng-template [ngIf]="network === 'liquid'">L-</ng-template>
   <ng-template [ngIf]="network === 'liquidtestnet'">tL-</ng-template>
   <ng-template [ngIf]="network === 'testnet'">t-</ng-template>
+  <ng-template [ngIf]="network === 'testnet4'">t-</ng-template>
   <ng-template [ngIf]="network === 'signet'">s-</ng-template>{{ unit }}
 </span>
\ No newline at end of file
diff --git a/frontend/src/app/shared/components/global-footer/global-footer.component.html b/frontend/src/app/shared/components/global-footer/global-footer.component.html
index 7e3d44b06..1a3d68cba 100644
--- a/frontend/src/app/shared/components/global-footer/global-footer.component.html
+++ b/frontend/src/app/shared/components/global-footer/global-footer.component.html
@@ -4,13 +4,19 @@
     <div class="row main" [class]="{'services': isServicesPage}">
       <div class="col-md-12 branding mt-2">
         <div class="main-logo" [class]="{'services': isServicesPage}">
-          <app-svg-images *ngIf="officialMempoolSpace" name="officialMempoolSpace" viewBox="0 0 500 126"></app-svg-images>
-          <app-svg-images *ngIf="!officialMempoolSpace" name="mempoolSpace" viewBox="0 0 500 126"></app-svg-images>
+          @if (enterpriseInfo?.footer_img) {
+            <img [src]="enterpriseInfo?.footer_img" alt="enterpriseInfo.title" height="60px" class="mr-3">
+          } @else {
+            <app-svg-images *ngIf="officialMempoolSpace" name="officialMempoolSpace" viewBox="0 0 500 126"></app-svg-images>
+            <app-svg-images *ngIf="!officialMempoolSpace" name="mempoolSpace" viewBox="0 0 500 126"></app-svg-images>
+          }
         </div>
-        <p class="explore-tagline-mobile">
-          <ng-container i18n="@@7deec1c1520f06170e1f8e8ddfbe4532312f638f">Explore the full Bitcoin ecosystem</ng-container>
-          <ng-template [ngIf]="locale.substr(0, 2) === 'en'">&reg;</ng-template>
-        </p>
+        @if (!enterpriseInfo?.footer_img) {
+          <p class="explore-tagline-mobile">
+            <ng-container i18n="@@7deec1c1520f06170e1f8e8ddfbe4532312f638f">Explore the full Bitcoin ecosystem</ng-container>
+            <ng-template [ngIf]="locale.substr(0, 2) === 'en'">&reg;</ng-template>
+          </p>
+        }
         <div class="site-options language-selector d-flex justify-content-center align-items-center" [class]="{'services': isServicesPage}">
           <div class="selector">
             <app-language-selector></app-language-selector>
@@ -21,34 +27,41 @@
           <div class="selector">
             <app-rate-unit-selector></app-rate-unit-selector>
           </div>
-          <div class="selector d-none d-sm-flex">
-            <app-theme-selector></app-theme-selector>
-          </div>
+          @if (!env.customize?.theme) {
+            <div class="selector d-none d-sm-flex">
+              <app-theme-selector></app-theme-selector>
+            </div>
+          }
           <a *ngIf="stateService.isMempoolSpaceBuild" class="btn btn-purple sponsor d-none d-sm-flex justify-content-center" [routerLink]="['/login' | relativeUrl]">
             <span *ngIf="loggedIn" i18n="shared.my-account" class="nowrap">My Account</span>
             <span *ngIf="!loggedIn" i18n="shared.sign-in" class="nowrap">Sign In</span>
           </a>
         </div>
-        <div class="selector d-flex d-sm-none justify-content-center ml-auto mr-auto mt-0">
-          <app-theme-selector></app-theme-selector>
-        </div>
-        <a *ngIf="stateService.isMempoolSpaceBuild" class="btn btn-purple sponsor d-flex d-sm-none justify-content-center ml-auto mr-auto mt-0 mb-2" [routerLink]="['/login' | relativeUrl]">
-          <span *ngIf="loggedIn" i18n="shared.my-account" class="nowrap">My Account</span>
-          <span *ngIf="!loggedIn" i18n="shared.sign-in" class="nowrap">Sign In</span>
-        </a>
-        <p class="explore-tagline-desktop">
-          <ng-container i18n="@@7deec1c1520f06170e1f8e8ddfbe4532312f638f">Explore the full Bitcoin ecosystem</ng-container>
-          <ng-template [ngIf]="locale.substr(0, 2) === 'en'">&reg;</ng-template>
-        </p>
+        @if (!env.customize?.theme) {
+          <div class="selector d-flex d-sm-none justify-content-center ml-auto mr-auto mt-0">
+            <app-theme-selector></app-theme-selector>
+          </div>
+        }
+        @if (!enterpriseInfo?.footer_img) {
+          <a *ngIf="stateService.isMempoolSpaceBuild" class="btn btn-purple sponsor d-flex d-sm-none justify-content-center ml-auto mr-auto mt-0 mb-2" [routerLink]="['/login' | relativeUrl]">
+            <span *ngIf="loggedIn" i18n="shared.my-account" class="nowrap">My Account</span>
+            <span *ngIf="!loggedIn" i18n="shared.sign-in" class="nowrap">Sign In</span>
+          </a>
+          <p class="explore-tagline-desktop">
+            <ng-container i18n="@@7deec1c1520f06170e1f8e8ddfbe4532312f638f">Explore the full Bitcoin ecosystem</ng-container>
+            <ng-template [ngIf]="locale.substr(0, 2) === 'en'">&reg;</ng-template>
+          </p>
+        }
       </div>
     </div>
     <div class="row col-md-12 link-tree" [class]="{'services': isServicesPage}">
         <div class="links">
           <p class="category" i18n="footer.explore">Explore</p>
           <p><a *ngIf="env.MINING_DASHBOARD" [routerLink]="['/mining' | relativeUrl]" i18n="mining.mining-dashboard">Mining Dashboard</a></p>
-          <p><a *ngIf="env.LIGHTNING" [routerLink]="['/lightning' | relativeUrl]" i18n="master-page.lightning">Lightning Explorer</a></p>
+          <p><a *ngIf="env.LIGHTNING && lightningNetworks.includes(stateService.network)" [routerLink]="['/lightning' | relativeUrl]" i18n="master-page.lightning">Lightning Explorer</a></p>
           <p><a [routerLink]="['/blocks' | relativeUrl]" i18n="dashboard.recent-blocks">Recent Blocks</a></p>
           <p><a [routerLink]="['/tx/push' | relativeUrl]" i18n="shared.broadcast-transaction|Broadcast Transaction">Broadcast Transaction</a></p>
+          <p><a [routerLink]="['/tx/test' | relativeUrl]" i18n="shared.test-transaction|Test Transaction">Test Transaction</a></p>
           <p *ngIf="officialMempoolSpace"><a [routerLink]="['/lightning/group/the-mempool-open-source-project' | relativeUrl]" i18n="footer.connect-to-our-nodes">Connect to our Nodes</a></p>
           <p><a [routerLink]="['/docs/api' | relativeUrl]" i18n="footer.api-documentation">API Documentation</a></p>
         </div>
@@ -61,10 +74,11 @@
           <p><a [routerLink]="['/docs/faq' | relativeUrl]" i18n="faq.more-faq">More FAQs &raquo;</a></p>
         </div>
 
-        <div class="links" *ngIf="officialMempoolSpace || env.TESTNET_ENABLED || env.SIGNET_ENABLED || env.LIQUID_ENABLED || env.LIQUID_TESTNET_ENABLED else toolBox" >
+        <div class="links" *ngIf="officialMempoolSpace || env.TESTNET_ENABLED || env.TESTNET4_ENABLED || env.SIGNET_ENABLED || env.LIQUID_ENABLED || env.LIQUID_TESTNET_ENABLED else toolBox" >
           <p class="category" i18n="footer.networks">Networks</p>
           <p *ngIf="(officialMempoolSpace || (env.BASE_MODULE === 'mempool')) && (currentNetwork !== '') && (currentNetwork !== 'mainnet')"><a [href]="networkLink('mainnet')" i18n="footer.mainnet-explorer">Mainnet Explorer</a></p>
-          <p *ngIf="(officialMempoolSpace || (env.BASE_MODULE === 'mempool')) && (currentNetwork !== 'testnet') && env.TESTNET_ENABLED"><a [href]="networkLink('testnet')" i18n="footer.testnet-explorer">Testnet Explorer</a></p>
+          <p *ngIf="(officialMempoolSpace || (env.BASE_MODULE === 'mempool')) && (currentNetwork !== 'testnet') && env.TESTNET_ENABLED"><a [href]="networkLink('testnet')" i18n="footer.testnet3-explorer">Testnet3 Explorer</a></p>
+          <p *ngIf="(officialMempoolSpace || (env.BASE_MODULE === 'mempool')) && (currentNetwork !== 'testnet4') && env.TESTNET4_ENABLED"><a [href]="networkLink('testnet4')" i18n="footer.testnet4-explorer">Testnet4 Explorer</a> <span class="badge badge-pill badge-warning beta-network" i18n="beta">beta</span></p>
           <p *ngIf="(officialMempoolSpace || (env.BASE_MODULE === 'mempool')) && (currentNetwork !== 'signet') && env.SIGNET_ENABLED"><a [href]="networkLink('signet')" i18n="footer.signet-explorer">Signet Explorer</a></p>
           <p *ngIf="(officialMempoolSpace || env.LIQUID_ENABLED) && (currentNetwork !== 'liquidtestnet')"><a [href]="networkLink('liquidtestnet')" i18n="footer.liquid-testnet-explorer">Liquid Testnet Explorer</a></p>
           <p *ngIf="(officialMempoolSpace || env.LIQUID_ENABLED) && (currentNetwork !== 'liquid')"><a [href]="networkLink('liquid')" i18n="footer.liquid-explorer">Liquid Explorer</a></p>
diff --git a/frontend/src/app/shared/components/global-footer/global-footer.component.scss b/frontend/src/app/shared/components/global-footer/global-footer.component.scss
index 880ab79b4..e0daf4f4c 100644
--- a/frontend/src/app/shared/components/global-footer/global-footer.component.scss
+++ b/frontend/src/app/shared/components/global-footer/global-footer.component.scss
@@ -329,3 +329,8 @@ footer .nowrap {
     margin-right: 10px;
   }
 }
+
+.beta-network {
+  font-size: 8px;
+  margin-left: 1em;
+}
diff --git a/frontend/src/app/shared/components/global-footer/global-footer.component.ts b/frontend/src/app/shared/components/global-footer/global-footer.component.ts
index 5300ba107..469a12076 100644
--- a/frontend/src/app/shared/components/global-footer/global-footer.component.ts
+++ b/frontend/src/app/shared/components/global-footer/global-footer.component.ts
@@ -1,4 +1,4 @@
-import { ChangeDetectionStrategy, ChangeDetectorRef, Component, OnInit, Inject, LOCALE_ID, HostListener } from '@angular/core';
+import { ChangeDetectionStrategy, ChangeDetectorRef, Component, OnInit, Inject, LOCALE_ID, HostListener, OnDestroy } from '@angular/core';
 import { Router, ActivatedRoute } from '@angular/router';
 import { Observable, merge, of, Subject, Subscription } from 'rxjs';
 import { tap, takeUntil } from 'rxjs/operators';
@@ -8,6 +8,7 @@ import { LanguageService } from '../../../services/language.service';
 import { NavigationService } from '../../../services/navigation.service';
 import { StorageService } from '../../../services/storage.service';
 import { WebsocketService } from '../../../services/websocket.service';
+import { EnterpriseService } from '../../../services/enterprise.service';
 
 @Component({
   selector: 'app-global-footer',
@@ -15,7 +16,7 @@ import { WebsocketService } from '../../../services/websocket.service';
   styleUrls: ['./global-footer.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class GlobalFooterComponent implements OnInit {
+export class GlobalFooterComponent implements OnInit, OnDestroy {
   private destroy$: Subject<any> = new Subject<any>();
   env: Env;
   officialMempoolSpace = this.stateService.env.OFFICIAL_MEMPOOL_SPACE;
@@ -27,14 +28,19 @@ export class GlobalFooterComponent implements OnInit {
   network$: Observable<string>;
   networkPaths: { [network: string]: string };
   currentNetwork = '';
+  lightningNetworks = ['', 'mainnet', 'bitcoin', 'testnet', 'signet'];
   loggedIn = false;
   urlSubscription: Subscription;
   isServicesPage = false;
 
+  enterpriseInfo: any;
+  enterpriseInfo$: Subscription;
+
   constructor(
     public stateService: StateService,
     private languageService: LanguageService,
     private navigationService: NavigationService,
+    private enterpriseService: EnterpriseService,
     @Inject(LOCALE_ID) public locale: string,
     private storageService: StorageService,
     private route: ActivatedRoute,
@@ -53,6 +59,9 @@ export class GlobalFooterComponent implements OnInit {
     this.navigationService.subnetPaths.subscribe((paths) => {
       this.networkPaths = paths;
     });
+    this.enterpriseInfo$ = this.enterpriseService.info$.subscribe(info => {
+      this.enterpriseInfo = info;
+    });
     this.network$ = merge(of(''), this.stateService.networkChanged$).pipe(
       tap((network: string) => {
         return network;
@@ -72,11 +81,14 @@ export class GlobalFooterComponent implements OnInit {
     this.destroy$.next(true);
     this.destroy$.complete();
     this.urlSubscription.unsubscribe();
+    if (this.enterpriseInfo$) {
+      this.enterpriseInfo$.unsubscribe();
+    }
   }
 
   networkLink(network) {
     const thisNetwork = network || 'mainnet';
-    if( network === '' || network === 'mainnet' || network === 'testnet' || network === 'signet' ) {
+    if( network === '' || network === 'mainnet' || network === 'testnet' || network === 'testnet4' || network === 'signet' ) {
       return (this.env.BASE_MODULE === 'mempool' ? '' : this.env.MEMPOOL_WEBSITE_URL + this.urlLanguage) + this.networkPaths[thisNetwork] || '/';
     }
     if( network === 'liquid' || network === 'liquidtestnet' ) {
diff --git a/frontend/src/app/shared/components/sats/sats.component.html b/frontend/src/app/shared/components/sats/sats.component.html
index 1b4ab9143..bdd718e9f 100644
--- a/frontend/src/app/shared/components/sats/sats.component.html
+++ b/frontend/src/app/shared/components/sats/sats.component.html
@@ -4,5 +4,6 @@
   <ng-template [ngIf]="network === 'liquid'">L-</ng-template>
   <ng-template [ngIf]="network === 'liquidtestnet'">tL-</ng-template>
   <ng-template [ngIf]="network === 'testnet'">t-</ng-template>
+  <ng-template [ngIf]="network === 'testnet4'">t-</ng-template>
   <ng-template [ngIf]="network === 'signet'">s-</ng-template>sats
 </span>
\ No newline at end of file
diff --git a/frontend/src/app/shared/regex.utils.ts b/frontend/src/app/shared/regex.utils.ts
index 422d538e0..187111a59 100644
--- a/frontend/src/app/shared/regex.utils.ts
+++ b/frontend/src/app/shared/regex.utils.ts
@@ -62,6 +62,20 @@ const ADDRESS_CHARS: {
         + `{20,100}`
       + `)`,
   },
+  testnet4: {
+    base58: `[mn2]` // Starts with a single m, n, or 2 (P2PKH is m or n, 2 is P2SH)
+      + BASE58_CHARS
+      + `{33,34}`, // m|n is 34 length, 2 is 35 length (We match the first letter separately)
+    bech32: `(?:`
+        + `tb1` // Starts with tb1
+        + BECH32_CHARS_LW
+        + `{20,100}` // As per bech32, 6 char checksum is minimum
+      + `|`
+        + `TB1` // All upper case version
+        + BECH32_CHARS_UP
+        + `{20,100}`
+      + `)`,
+  },
   signet: {
     base58: `[mn2]`
       + BASE58_CHARS
@@ -128,7 +142,7 @@ const ADDRESS_CHARS: {
 type RegexTypeNoAddrNoBlockHash = | `transaction` | `blockheight` | `date` | `timestamp`;
 export type RegexType = `address` | `blockhash` | RegexTypeNoAddrNoBlockHash;
 
-export const NETWORKS = [`testnet`, `signet`, `liquid`, `liquidtestnet`, `mainnet`] as const;
+export const NETWORKS = [`testnet`, `testnet4`, `signet`, `liquid`, `liquidtestnet`, `mainnet`] as const;
 export type Network = typeof NETWORKS[number]; // Turn const array into union type
 
 export const ADDRESS_REGEXES: [RegExp, Network][] = NETWORKS
@@ -144,6 +158,8 @@ function isNetworkAvailable(network: Network, env: Env): boolean {
   switch (network) {
     case 'testnet':
       return env.TESTNET_ENABLED === true;
+    case 'testnet4':
+      return env.TESTNET4_ENABLED === true;
     case 'signet':
       return env.SIGNET_ENABLED === true;
     case 'liquid':
@@ -160,7 +176,7 @@ function isNetworkAvailable(network: Network, env: Env): boolean {
 export function needBaseModuleChange(fromBaseModule: 'mempool' | 'liquid', toNetwork: Network): boolean {
   if (!toNetwork) return false; // No target network means no change needed
   if (fromBaseModule === 'mempool') {
-    return toNetwork !== 'mainnet' && toNetwork !== 'testnet' && toNetwork !== 'signet';
+    return toNetwork !== 'mainnet' && toNetwork !== 'testnet' && toNetwork !== 'testnet4' && toNetwork !== 'signet';
   }
   if (fromBaseModule === 'liquid') {
     return toNetwork !== 'liquid' && toNetwork !== 'liquidtestnet';
@@ -175,7 +191,7 @@ export function getTargetUrl(toNetwork: Network, address: string, env: Env): str
     targetUrl += '/address/';
     targetUrl += address;
   }
-  if (toNetwork === 'mainnet' || toNetwork === 'testnet' || toNetwork === 'signet') {
+  if (toNetwork === 'mainnet' || toNetwork === 'testnet' || toNetwork === 'testnet4' || toNetwork === 'signet') {
     targetUrl = env.MEMPOOL_WEBSITE_URL;
     targetUrl += (toNetwork === 'mainnet' ? '' : `/${toNetwork}`);
     targetUrl += '/address/';
@@ -209,6 +225,9 @@ export function getRegex(type: RegexType, network?: Network): RegExp {
         case `testnet`:
           leadingZeroes = 8; // Assumes at least 32 bits of difficulty
           break;
+        case `testnet4`:
+          leadingZeroes = 8; // Assumes at least 32 bits of difficulty
+          break;
         case `signet`:
           leadingZeroes = 5;
           break;
@@ -261,6 +280,15 @@ export function getRegex(type: RegexType, network?: Network): RegExp {
           regex += `|`; // OR
           regex += `(?:02|03)${HEX_CHARS}{64}`; // Compressed pubkey
           break;
+        case `testnet4`:
+          regex += ADDRESS_CHARS.testnet.base58;
+          regex += `|`; // OR
+          regex += ADDRESS_CHARS.testnet.bech32;
+          regex += `|`; // OR
+          regex += `04${HEX_CHARS}{128}`; // Uncompressed pubkey
+          regex += `|`; // OR
+          regex += `(?:02|03)${HEX_CHARS}{64}`; // Compressed pubkey
+          break;
         case `signet`:
           regex += ADDRESS_CHARS.signet.base58;
           regex += `|`; // OR
diff --git a/frontend/src/app/shared/shared.module.ts b/frontend/src/app/shared/shared.module.ts
index 7f52a1b60..0e882d12a 100644
--- a/frontend/src/app/shared/shared.module.ts
+++ b/frontend/src/app/shared/shared.module.ts
@@ -70,6 +70,7 @@ import { AddressTransactionsWidgetComponent } from '../components/address-transa
 import { RbfTimelineComponent } from '../components/rbf-timeline/rbf-timeline.component';
 import { RbfTimelineTooltipComponent } from '../components/rbf-timeline/rbf-timeline-tooltip.component';
 import { PushTransactionComponent } from '../components/push-transaction/push-transaction.component';
+import { TestTransactionsComponent } from '../components/test-transactions/test-transactions.component';
 import { AssetsFeaturedComponent } from '../components/assets/assets-featured/assets-featured.component';
 import { AssetGroupComponent } from '../components/assets/asset-group/asset-group.component';
 import { AssetCirculationComponent } from '../components/asset-circulation/asset-circulation.component';
@@ -181,6 +182,7 @@ import { OnlyVsizeDirective, OnlyWeightDirective } from './components/weight-dir
     RbfTimelineComponent,
     RbfTimelineTooltipComponent,
     PushTransactionComponent,
+    TestTransactionsComponent,
     AssetsNavComponent,
     AssetsFeaturedComponent,
     AssetGroupComponent,
@@ -320,6 +322,7 @@ import { OnlyVsizeDirective, OnlyWeightDirective } from './components/weight-dir
     RbfTimelineComponent,
     RbfTimelineTooltipComponent,
     PushTransactionComponent,
+    TestTransactionsComponent,
     AssetsNavComponent,
     AssetsFeaturedComponent,
     AssetGroupComponent,
diff --git a/frontend/src/index.sv.html b/frontend/src/index.sv.html
index a18c1d7fe..58cfd179b 100644
--- a/frontend/src/index.sv.html
+++ b/frontend/src/index.sv.html
@@ -3,7 +3,7 @@
 
 <head>
   <meta charset="utf-8">
-  <title>Oficina Nacional del Bitcoin - Bitcoin Explorer</title>
+  <title>Bitcoin Office - Explorer</title>
   <script src="/resources/config.js"></script>
   <script src="/resources/customize.js"></script>
   <base href="/">
diff --git a/frontend/src/resources/elsalvador.svg b/frontend/src/resources/elsalvador.svg
index eb2aff426..fc5a59185 100644
--- a/frontend/src/resources/elsalvador.svg
+++ b/frontend/src/resources/elsalvador.svg
@@ -1,37 +1,12 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
 <svg
    width="159.7426"
    height="162.47015"
    viewBox="0 0 42.26523 42.986894"
    version="1.1"
-   id="svg5"
-   sodipodi:docname="elsalvador.svg"
-   inkscape:version="1.2.2 (b0a84865, 2022-12-01)"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   id="elsalvador"
    xmlns="http://www.w3.org/2000/svg"
    xmlns:svg="http://www.w3.org/2000/svg">
-  <sodipodi:namedview
-     id="namedview469"
-     pagecolor="#ffffff"
-     bordercolor="#000000"
-     borderopacity="0.25"
-     inkscape:showpageshadow="2"
-     inkscape:pageopacity="0.0"
-     inkscape:pagecheckerboard="0"
-     inkscape:deskcolor="#d1d1d1"
-     showgrid="false"
-     inkscape:zoom="2.8463012"
-     inkscape:cx="21.606989"
-     inkscape:cy="67.982966"
-     inkscape:window-width="1728"
-     inkscape:window-height="1051"
-     inkscape:window-x="0"
-     inkscape:window-y="38"
-     inkscape:window-maximized="1"
-     inkscape:current-layer="svg5" />
   <defs
      id="defs2">
     <clipPath
diff --git a/frontend/src/resources/onbtc.svg b/frontend/src/resources/onbtc.svg
index 02df69489..a76cbe496 100644
--- a/frontend/src/resources/onbtc.svg
+++ b/frontend/src/resources/onbtc.svg
@@ -1,118 +1,44 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-
 <svg
-   width="166.66856mm"
-   height="27.910412mm"
-   viewBox="0 0 166.66856 27.910412"
+   width="73.044792mm"
+   height="27.902231mm"
+   viewBox="0 0 73.04479 27.902231"
    version="1.1"
-   id="svg5"
-   sodipodi:docname="onbtc.svg"
-   inkscape:version="1.2.2 (b0a84865, 2022-12-01)"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   id="onbtc"
    xmlns="http://www.w3.org/2000/svg"
    xmlns:svg="http://www.w3.org/2000/svg">
-  <sodipodi:namedview
-     id="namedview188"
-     pagecolor="#ffffff"
-     bordercolor="#000000"
-     borderopacity="0.25"
-     inkscape:showpageshadow="2"
-     inkscape:pageopacity="0.0"
-     inkscape:pagecheckerboard="0"
-     inkscape:deskcolor="#d1d1d1"
-     inkscape:document-units="mm"
-     showgrid="false"
-     inkscape:zoom="1.9192657"
-     inkscape:cx="243.84326"
-     inkscape:cy="52.88481"
-     inkscape:window-width="1728"
-     inkscape:window-height="1051"
-     inkscape:window-x="0"
-     inkscape:window-y="38"
-     inkscape:window-maximized="1"
-     inkscape:current-layer="text1855" />
   <defs
      id="defs2" />
   <g
-     aria-label="OFICINA NACIONAL DEL BITCOIN"
+     aria-label="BITCOIN OFFICE"
      id="text1855"
      style="fill:#d2d2d2;stroke-width:3.37609;stroke-linecap:square"
-     transform="translate(-15.744428,-40.187266)">
+     transform="translate(-15.744428,-40.187135)">
     <path
-       d="m 28.492368,45.40464 c 0,-3.039246 -2.735322,-5.217373 -5.92653,-5.217373 -3.596442,0 -6.179801,2.380743 -6.179801,5.740798 0,3.157439 2.785976,5.284912 6.095377,5.284912 3.275632,0 6.010954,-2.397628 6.010954,-5.808337 z m -1.587162,0.557195 c 0,2.397627 -1.317007,4.829024 -4.069213,4.829024 -2.718437,0 -4.862794,-2.22878 -4.862794,-5.386219 0,-2.026164 1.181929,-4.795255 4.153636,-4.795255 2.785976,0 4.778371,2.211895 4.778371,5.35245 z"
-       id="path415" />
+       d="m 17.787525,49.237549 c 0,1.063761 -0.270162,1.384578 -1.65474,1.384578 h -0.388357 v 0.320817 h 6.179946 c 2.718501,0 3.647182,-1.874246 3.647182,-3.208169 0,-1.317038 -0.928681,-2.347029 -2.51588,-2.819812 v -0.03377 c 1.131301,-0.202621 1.924901,-1.097532 1.924901,-2.059982 0,-0.810485 -0.337702,-1.384578 -1.029991,-1.874246 -0.607864,-0.439013 -1.908016,-0.658519 -3.393905,-0.658519 -0.320817,0 -1.604084,0.01689 -2.532765,0.05065 -0.489668,0.01689 -1.65474,0.08443 -2.127522,0.101311 v 0.320817 h 0.590978 c 1.181957,0 1.300153,0.506553 1.300153,1.469003 z m 1.401463,-8.577631 c 0.422127,-0.01688 1.114417,-0.05065 1.485889,-0.05065 2.076867,0 2.786041,1.080646 2.786041,2.262603 0,1.317038 -0.810485,1.958672 -2.431454,1.958672 h -1.840476 z m 0,4.491436 h 1.823591 c 1.975556,0 2.971777,1.333923 2.971777,2.634076 0,1.317038 -0.641634,2.701616 -2.870467,2.701616 -1.418348,0 -1.924901,-0.455898 -1.924901,-1.739165 z" />
     <path
-       d="m 37.390604,43.935671 h -0.28704 c -0.05065,0.726042 -0.354579,1.080621 -0.979313,1.080621 h -3.34317 v -3.967905 h 3.208093 c 1.046851,0 1.384545,0.405233 1.40143,1.384545 h 0.28704 v -1.992394 h -7.564346 v 0.320809 c 1.181929,0.01689 1.266352,0.506541 1.266352,1.587162 v 6.618803 c 0,1.36766 -0.185731,1.587161 -1.232583,1.6547 v 0.32081 h 4.102982 v -0.32081 c -1.266352,0 -1.468968,-0.354579 -1.468968,-1.300122 v -3.697749 h 3.123669 c 0.810466,0 1.165045,0.303924 1.198814,1.283237 h 0.28704 z"
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     <path
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diff --git a/frontend/src/resources/sv/onbtc-preview.jpg b/frontend/src/resources/sv/onbtc-preview.jpg
index 1ae838e12..b243fd8e0 100644
Binary files a/frontend/src/resources/sv/onbtc-preview.jpg and b/frontend/src/resources/sv/onbtc-preview.jpg differ
diff --git a/frontend/src/styles.scss b/frontend/src/styles.scss
index d92a3ec36..dd0ce8bef 100644
--- a/frontend/src/styles.scss
+++ b/frontend/src/styles.scss
@@ -64,7 +64,6 @@ $dropdown-link-active-bg: $active-bg;
   --active-bg: #{$active-bg};
   --hover-bg: #{$hover-bg};
   --fg: #{$fg};
-  --color-fg: #ffffff;
   --title-fg: #{$title-fg};
 
   --primary: #{$primary};
@@ -72,7 +71,11 @@ $dropdown-link-active-bg: $active-bg;
   --tertiary: #{$tertiary};
   --success: #{$success};
   --info: #{$info};
+  --link-color: #{$link-color};
+  --link-hover-color: #{$link-hover-color};
   --icon: #f1f1f1;
+  --skeleton-bg: #2e324e;
+  --skeleton-bg-light: #5d6182;
 
   --box-bg: #24273e;
   --stat-box-bg: #181b2d;
@@ -81,6 +84,7 @@ $dropdown-link-active-bg: $active-bg;
   --transparent-fg: #ffffff66;
   --fade-out-box-bg-start: rgba(36, 39, 62, 0);
   --fade-out-box-bg-end: rgba(36, 39, 62, 1);
+  --opacity: 0.57;
 
   --testnet: #1d486f;
   --signet: #6f1d5d;
@@ -98,10 +102,15 @@ $dropdown-link-active-bg: $active-bg;
 
   --green: #3bcc49;
   --red: #dc3545;
-  --yellow: #ffd800;
+  --yellow: #fff000;
   --grey: #6c757d;
   --tooltip-grey: #b1b1b1;
   --orange: #b86d12;
+
+  --search-button: #4d2d77;
+  --search-button-border: #472a6e;
+  --search-button-focus: #533180;
+  --search-button-shadow: #7c58ab80;
 }
 
 html, body {
@@ -171,13 +180,13 @@ main {
 }
 
 .form-control {
-  color: #fff;
+  color: var(--fg);
   background-color: var(--secondary);
   border: 1px solid rgba(17, 19, 31, 0.2);
 }
 
 .form-control:focus {
-  color: #fff;
+  color: var(--fg);
   background-color: var(--secondary);
 }
 
@@ -188,25 +197,25 @@ main {
 
 .btn-purple:not(:disabled):not(.disabled):active, .btn-purple:not(:disabled):not(.disabled).active, .show > .btn-purple.dropdown-toggle {
   color: #fff;
-  background-color: #4d2d77;
-  border-color: #472a6e;
+  background-color: var(--search-button);
+  border-color: var(--search-button-border);
 }
 
 .btn-purple:focus, .btn-purple.focus {
   color: #fff;
-  background-color: #533180;
-  border-color: #4d2d77;
-  box-shadow: 0 0 0 0.2rem rgb(124 88 171 / 50%);
+  background-color: var(--search-button-focus);
+  border-color: var(--search-button);
+  box-shadow: 0 0 0 0.2rem var(--search-button-shadow);
 }
 
 .btn-purple:hover {
   color: #fff;
-  background-color: #533180;
-  border-color: #4d2d77;
+  background-color: var(--search-button-focus);
+  border-color: var(--search-button);
 }
 
 .form-control.form-control-secondary {
-  color: var(--fg);
+  color: #fff;
   background-color: var(--secondary);
   border: 1px solid var(--secondary);
 }
@@ -229,11 +238,11 @@ main {
   position: relative;
 
   animation: progress 2s ease-in-out infinite;
-  background: #2e324e no-repeat;
+  background: var(--skeleton-bg) no-repeat;
   background-image: linear-gradient(
     90deg,
     rgba(255, 255, 255, 0),
-    #5d6182,
+    var(--skeleton-bg-light),
     rgba(255, 255, 255, 0)
   );
   background-size: 200px 100%;
@@ -271,14 +280,14 @@ main {
 
 .progress-text {
   span {
-    color: var(--fg) !important;
+    color: #fff !important;
   }
 }
 
 .block-size, .blocks-container {
   .symbol {
     font-size: 16px;
-    color: var(--fg) !important;
+    color: #fff !important;
   }
 }
 
@@ -418,18 +427,18 @@ html:lang(ru) .card-title {
     font-size: 12px;
     font-weight: 700;
     margin-bottom: 2px;
-    color: var(--fg);
+    color: #fff;
     .total-value {
       float: right;
     }
   }
   .active {
-    color: yellow !important;
+    color: var(--yellow) !important;
     .value,
     .total-partial {
-      color: yellow !important;
+      color: var(--yellow) !important;
       .symbol {
-        color: yellow !important;
+        color: var(--yellow) !important;
       }
     }
   }
@@ -477,7 +486,7 @@ html:lang(ru) .card-title {
   .total-label {
     width: 100%;
     text-align: left;
-    color: var(--fg);
+    color: #fff;
     margin-top: 5px;
     font-size: 14px;
     span {
@@ -728,19 +737,19 @@ h1, h2, h3 {
 }
 
 .progress-mempool {
-  background: repeating-linear-gradient(to right, $secondary, $secondary 0%, $primary 0%, var(--mainnet-alt) 100%);
+  background: repeating-linear-gradient(to right, var(--secondary), var(--secondary) 0%, var(--primary) 0%, var(--mainnet-alt) 100%);
 }
 
 .progress-mempool.testnet {
-  background: repeating-linear-gradient(to right, $secondary, $secondary 0%, var(--testnet) 0%, var(--testnet-alt) 100%);
+  background: repeating-linear-gradient(to right, var(--secondary), var(--secondary) 0%, var(--testnet) 0%, var(--testnet-alt) 100%);
 }
 
 .progress-mempool.signet {
-  background: repeating-linear-gradient(to right, $secondary, $secondary 0%, var(--signet) 0%, var(--signet-alt) 100%);
+  background: repeating-linear-gradient(to right, var(--secondary), var(--secondary) 0%, var(--signet) 0%, var(--signet-alt) 100%);
 }
 
 .progress-mempool.liquid {
-  background: repeating-linear-gradient(to right, $secondary, $secondary 0%, var(--liquid) 0%, var(--testnet-alt) 100%);
+  background: repeating-linear-gradient(to right, var(--secondary), var(--secondary) 0%, var(--liquid) 0%, var(--testnet-alt) 100%);
 }
 
 .progress-dark {
@@ -752,11 +761,11 @@ h1, h2, h3 {
 }
 
 .progress-light {
-  background-color: #2e324e;
+  background-color: var(--skeleton-bg);
 }
 
 .progress.progress-health {
-  background: repeating-linear-gradient(to right, $secondary, $secondary 0%, $primary 0%, $success 100%);
+  background: repeating-linear-gradient(to right, var(--secondary), var(--secondary) 0%, var(--primary) 0%, $success 100%);
   justify-content: flex-end;
 }
 
@@ -769,7 +778,7 @@ h1, h2, h3 {
 }
 
 .alert-mempool {
-  color: var(--fg);
+  color: #fff;
   background-color: var(--tertiary);
   border-color: var(--alert-bg);
   width: 100%;
@@ -1137,7 +1146,7 @@ th {
       display: block;
       width: 100%;
       padding: 1rem 2rem;
-      color: var(--fg);
+      color: #fff;
       font-weight: bold;
       &:focus, &:hover, &:active {
         text-decoration: none;
@@ -1221,7 +1230,7 @@ th {
 }
 
 .blink-bg {
-  color: var(--fg);
+  color: #fff;
   background: repeating-linear-gradient($taproot-dark, $taproot-dark 0.163525%, $taproot-light 100%) !important;
   animation: shadowyBackground 1s infinite;
   box-shadow: -10px -15px 75px rgba($taproot, 1);
@@ -1244,7 +1253,7 @@ app-master-page, app-liquid-master-page {
   display: flex;
   flex-direction: column;
   min-height: 100vh;
-  padding-bottom: 60px;
+  padding-bottom: 56px;
   @media (min-width: 992px) {
     padding-bottom: 0px;
   }
@@ -1268,12 +1277,36 @@ app-global-footer {
 
 .dropdown-menu {
   background-color: var(--bg);
+  color: var(--fg);
   .dropdown-item:hover, .dropdown-item:focus { 
     background-color: var(--active-bg);
+    color: var(--fg);
   }
 }
 
 .btn-secondary {
   background-color: var(--secondary);
   border-color: var(--secondary);
+}
+
+a {
+  color: var(--link-color);
+  &:hover {
+    color: var(--link-hover-color);
+  }
+}
+
+.badge-primary {
+  color: var(--fg);
+  background-color: var(--primary);
+}
+
+.badge-info {
+  background-color: var(--info);
+}
+
+.btn-primary { 
+  color: var(--fg);
+  background-color: var(--primary);
+  border-color: var(--primary);
 }
\ No newline at end of file
diff --git a/frontend/src/theme-bukele.scss b/frontend/src/theme-bukele.scss
new file mode 100644
index 000000000..afb2d2e76
--- /dev/null
+++ b/frontend/src/theme-bukele.scss
@@ -0,0 +1,139 @@
+/* Theme */
+$bg: #11131f;
+$active-bg: #000000;
+$hover-bg: #12131e;
+$fg: #d2d2d2;
+$nav-bg: #111e60;
+$title-fg: #2055e3;
+
+$taproot: #eba814;
+$taproot-light: #d5a90a;
+$taproot-dark: #9d7c05;
+
+/* Bootstrap */
+$body-bg: $bg;
+$body-color: $fg;
+$gray-800: $bg;
+$gray-700: $fg;
+
+$nav-tabs-link-active-bg: $active-bg;
+
+$primary: #007cfa;
+$secondary: #272f4e;
+$tertiary: #ff9900;
+$success: #0aab2f;
+$info: #00ddff;
+
+$h5-font-size: 1.15rem !default;
+
+$pagination-bg: $body-bg;
+$pagination-border-color: $gray-800;
+$pagination-disabled-bg:           $fg;
+$pagination-disabled-border-color: $bg;
+$pagination-active-color:          $fg;
+$pagination-active-bg:             $tertiary;
+$pagination-hover-bg:              $hover-bg;
+$pagination-hover-border-color:     $bg;
+$pagination-disabled-bg:          $bg;
+
+$custom-select-indicator-color: $fg;
+
+.input-group-text {
+  background-color: #1c2031 !important;
+  border: 1px solid #20263e !important;
+}
+
+$link-color:                $info;
+$link-decoration:           none !default;
+$link-hover-color:          darken($link-color, 15%) !default;
+$link-hover-decoration:     underline !default;
+
+$dropdown-bg: $bg;
+$dropdown-link-color: $fg;
+
+$dropdown-link-hover-color: $fg;
+$dropdown-link-hover-bg: $active-bg;
+
+$dropdown-link-active-color: $fg;
+$dropdown-link-active-bg: $active-bg;
+
+:root {
+  --bg: #{$bg};
+  --active-bg: #{$active-bg};
+  --hover-bg: #{$hover-bg};
+  --fg: #{$fg};
+  --nav-bg: #{$nav-bg};
+  --title-fg: #{$title-fg};
+
+  --primary: #{$primary};
+  --secondary: #{$secondary};
+  --tertiary: #{$tertiary};
+  --success: #{$success};
+  --info: #{$info};
+  --link-color: #{$link-color};
+  --link-hover-color: #{$link-hover-color};
+  --icon: #d2d2d2;
+  --skeleton-bg: #2e324e;
+  --skeleton-bg-light: #5d6182;
+
+  --box-bg: #171c2a;
+  --stat-box-bg: #0b1018;
+  --alert-bg: #3a1c61;
+  --transparent-fg: #ffffffbb;
+  --fade-out-box-bg-start: rgba(23, 28, 42, 0);
+  --fade-out-box-bg-end: rgba(23, 28, 42, 1);
+  --opacity: 0.9;
+
+  --testnet: #1d486f;
+  --signet: #6f1d5d;
+  --liquid: #116761;
+  --liquidtestnet: #494a4a;
+
+  --mainnet-alt: #9339f4;
+  --testnet-alt: #183550;
+  --signet-alt: #471850;
+  --liquidtestnet-alt: #272e46;
+
+  --taproot: #eba814;
+  --taproot-light: #d5a90a;
+  --taproot-dark: #9d7c05;
+
+  --green: #83fd00;
+  --red: #ff3d00;
+  --yellow: #fff000;
+  --grey: #7e7e7e;
+  --tooltip-grey: #b1b1b1;
+  --orange: #ff9f00;
+
+  --search-button: #d5a90a;
+  --search-button-border: #d5a90a;
+  --search-button-focus: #eba814;
+  --search-button-shadow: #eba814;
+}
+
+.navbar {
+  --secondary: #041437;
+}
+
+.nav-item.active, .btn-purple {
+  --icon: white;
+}
+
+.btn-purple:not(:disabled):not(.disabled):active, .btn-purple:not(:disabled):not(.disabled).active, .show > .btn-purple.dropdown-toggle {
+  color: #fff;
+  background-color: var(--search-button);
+  border-color: var(--search-button-border);
+}
+
+.btn-purple:focus, .btn-purple.focus {
+  color: #fff;
+  background-color: var(--search-button-focus);
+  border-color: var(--search-button);
+  box-shadow: 0 0 0 0.2rem var(--search-button-shadow);
+}
+
+.btn-purple:hover {
+  color: #fff;
+  background-color: var(--search-button-focus);
+  border-color: var(--search-button);
+}
\ No newline at end of file
diff --git a/frontend/src/theme-contrast.scss b/frontend/src/theme-contrast.scss
index 470bad2e9..6d80f1edb 100644
--- a/frontend/src/theme-contrast.scss
+++ b/frontend/src/theme-contrast.scss
@@ -3,6 +3,7 @@ $bg: #11131f;
 $active-bg: #000000;
 $hover-bg: #12131e;
 $fg: #fff;
+$nav-bg: $bg;
 $title-fg: #2055e3;
 
 $taproot: #eba814;
@@ -21,7 +22,7 @@ $primary: #007cfa;
 $secondary: #272f4e;
 $tertiary: #6225b2;
 $success: #0aab2f;
-$info: #10e0ff;
+$info: #00ddff;
 
 $h5-font-size: 1.15rem !default;
 
@@ -61,7 +62,7 @@ $dropdown-link-active-bg: $active-bg;
   --active-bg: #{$active-bg};
   --hover-bg: #{$hover-bg};
   --fg: #{$fg};
-  --color-fg: #fff;
+  --nav-bg: #{$nav-bg};
   --title-fg: #{$title-fg};
 
   --primary: #{$primary};
@@ -69,15 +70,19 @@ $dropdown-link-active-bg: $active-bg;
   --tertiary: #{$tertiary};
   --success: #{$success};
   --info: #{$info};
+  --link-color: #{$link-color};
+  --link-hover-color: #{$link-hover-color};
   --icon: #f1f1f1;
+  --skeleton-bg: #2e324e;
+  --skeleton-bg-light: #5d6182;
 
   --box-bg: #171c2a;
   --stat-box-bg: #0b1018;
   --alert-bg: #3a1c61;
-  --navbar-bg: #212121;
   --transparent-fg: #ffffffbb;
   --fade-out-box-bg-start: rgba(23, 28, 42, 0);
   --fade-out-box-bg-end: rgba(23, 28, 42, 1);
+  --opacity: 0.9;
 
   --testnet: #1d486f;
   --signet: #6f1d5d;
@@ -95,8 +100,13 @@ $dropdown-link-active-bg: $active-bg;
 
   --green: #83fd00;
   --red: #ff3d00;
-  --yellow: #ffcc00;
+  --yellow: #fff000;
   --grey: #7e7e7e;
   --tooltip-grey: #b1b1b1;
   --orange: #ff9f00;
+
+  --search-button: #4d2d77;
+  --search-button-border: #472a6e;
+  --search-button-focus: #533180;
+  --search-button-shadow: #7c58ab80;
 }
diff --git a/frontend/src/theme-wiz.scss b/frontend/src/theme-wiz.scss
index 470bad2e9..2dd5eb67b 100644
--- a/frontend/src/theme-wiz.scss
+++ b/frontend/src/theme-wiz.scss
@@ -3,6 +3,7 @@ $bg: #11131f;
 $active-bg: #000000;
 $hover-bg: #12131e;
 $fg: #fff;
+$nav-bg: $bg;
 $title-fg: #2055e3;
 
 $taproot: #eba814;
@@ -21,7 +22,7 @@ $primary: #007cfa;
 $secondary: #272f4e;
 $tertiary: #6225b2;
 $success: #0aab2f;
-$info: #10e0ff;
+$info: #00ddff;
 
 $h5-font-size: 1.15rem !default;
 
@@ -61,7 +62,7 @@ $dropdown-link-active-bg: $active-bg;
   --active-bg: #{$active-bg};
   --hover-bg: #{$hover-bg};
   --fg: #{$fg};
-  --color-fg: #fff;
+  --nav-bg: #{$nav-bg};
   --title-fg: #{$title-fg};
 
   --primary: #{$primary};
@@ -69,15 +70,19 @@ $dropdown-link-active-bg: $active-bg;
   --tertiary: #{$tertiary};
   --success: #{$success};
   --info: #{$info};
+  --link-color: #{$link-color};
+  --link-hover-color: #{$link-hover-color};
   --icon: #f1f1f1;
+  --skeleton-bg: #2e324e;
+  --skeleton-bg-light: #5d6182;
 
   --box-bg: #171c2a;
   --stat-box-bg: #0b1018;
   --alert-bg: #3a1c61;
-  --navbar-bg: #212121;
   --transparent-fg: #ffffffbb;
   --fade-out-box-bg-start: rgba(23, 28, 42, 0);
   --fade-out-box-bg-end: rgba(23, 28, 42, 1);
+  --opacity: 0.57;
 
   --testnet: #1d486f;
   --signet: #6f1d5d;
@@ -95,8 +100,13 @@ $dropdown-link-active-bg: $active-bg;
 
   --green: #83fd00;
   --red: #ff3d00;
-  --yellow: #ffcc00;
+  --yellow: #fff000;
   --grey: #7e7e7e;
   --tooltip-grey: #b1b1b1;
   --orange: #ff9f00;
+
+  --search-button: #4d2d77;
+  --search-button-border: #472a6e;
+  --search-button-focus: #533180;
+  --search-button-shadow: #7c58ab80;
 }
diff --git a/production/bitcoin.conf b/production/bitcoin.conf
index 3ec72e2e2..26d61b18c 100644
--- a/production/bitcoin.conf
+++ b/production/bitcoin.conf
@@ -84,6 +84,39 @@ zmqpubrawtx=tcp://127.0.0.1:18335
 #addnode=[2401:b140:4::92:205]:18333
 #addnode=[2401:b140:4::92:206]:18333
 
+[testnet4]
+daemon=1
+rpcbind=127.0.0.1:48332
+rpcbind=[::1]:48332
+bind=0.0.0.0:48333
+bind=[::]:48333
+zmqpubrawblock=tcp://127.0.0.1:48334
+zmqpubrawtx=tcp://127.0.0.1:48335
+#addnode=[2401:b140:1::92:201]:48333
+#addnode=[2401:b140:1::92:202]:48333
+#addnode=[2401:b140:1::92:203]:48333
+#addnode=[2401:b140:1::92:204]:48333
+#addnode=[2401:b140:1::92:205]:48333
+#addnode=[2401:b140:1::92:206]:48333
+#addnode=[2401:b140:2::92:201]:48333
+#addnode=[2401:b140:2::92:202]:48333
+#addnode=[2401:b140:2::92:203]:48333
+#addnode=[2401:b140:2::92:204]:48333
+#addnode=[2401:b140:2::92:205]:48333
+#addnode=[2401:b140:2::92:206]:48333
+#addnode=[2401:b140:3::92:201]:48333
+#addnode=[2401:b140:3::92:202]:48333
+#addnode=[2401:b140:3::92:203]:48333
+#addnode=[2401:b140:3::92:204]:48333
+#addnode=[2401:b140:3::92:205]:48333
+#addnode=[2401:b140:3::92:206]:48333
+#addnode=[2401:b140:4::92:201]:48333
+#addnode=[2401:b140:4::92:202]:48333
+#addnode=[2401:b140:4::92:203]:48333
+#addnode=[2401:b140:4::92:204]:48333
+#addnode=[2401:b140:4::92:205]:48333
+#addnode=[2401:b140:4::92:206]:48333
+
 [signet]
 daemon=1
 rpcbind=127.0.0.1:38332
diff --git a/production/mempool-build-all b/production/mempool-build-all
index 63dadaac0..1466de3ab 100755
--- a/production/mempool-build-all
+++ b/production/mempool-build-all
@@ -96,6 +96,8 @@ build_backend()
         -e "s!__MEMPOOL_MAINNET_PASS__!${MEMPOOL_MAINNET_PASS}!" \
         -e "s!__MEMPOOL_TESTNET_USER__!${MEMPOOL_TESTNET_USER}!" \
         -e "s!__MEMPOOL_TESTNET_PASS__!${MEMPOOL_TESTNET_PASS}!" \
+        -e "s!__MEMPOOL_TESTNET4_USER__!${MEMPOOL_TESTNET4_USER}!" \
+        -e "s!__MEMPOOL_TESTNET4_PASS__!${MEMPOOL_TESTNET4_PASS}!" \
         -e "s!__MEMPOOL_SIGNET_USER__!${MEMPOOL_SIGNET_USER}!" \
         -e "s!__MEMPOOL_SIGNET_PASS__!${MEMPOOL_SIGNET_PASS}!" \
         -e "s!__MEMPOOL_MAINNET_LIGHTNING_USER__!${MEMPOOL_MAINNET_LIGHTNING_USER}!" \
@@ -130,7 +132,7 @@ source "${NVM_DIR}/nvm.sh"
 
 # what to look for
 frontends=(mainnet liquid onbtc)
-backends=(mainnet testnet signet liquid liquidtestnet onbtc)
+backends=(mainnet testnet testnet4 signet liquid liquidtestnet onbtc)
 frontend_repos=()
 backend_repos=()
 
diff --git a/production/mempool-config.testnet4.json b/production/mempool-config.testnet4.json
new file mode 100644
index 000000000..64336866d
--- /dev/null
+++ b/production/mempool-config.testnet4.json
@@ -0,0 +1,84 @@
+{
+  "MEMPOOL": {
+    "OFFICIAL": true,
+    "NETWORK": "testnet",
+    "BACKEND": "esplora",
+    "HTTP_PORT": 8990,
+    "MINED_BLOCKS_CACHE": 144,
+    "SPAWN_CLUSTER_PROCS": 0,
+    "API_URL_PREFIX": "/api/v1/",
+    "INDEXING_BLOCKS_AMOUNT": -1,
+    "AUDIT": true,
+    "RUST_GBT": true,
+    "POLL_RATE_MS": 1000,
+    "DISK_CACHE_BLOCK_INTERVAL": 1,
+    "MAX_PUSH_TX_SIZE_WEIGHT": 4000000,
+    "ALLOW_UNREACHABLE": true,
+    "MAX_TRACKED_ADDRESSES": 10
+  },
+  "SYSLOG" : {
+    "MIN_PRIORITY": "debug"
+  },
+  "CORE_RPC": {
+    "PORT": 48332,
+    "USERNAME": "__BITCOIN_RPC_USER__",
+    "PASSWORD": "__BITCOIN_RPC_PASS__"
+  },
+  "ESPLORA": {
+    "UNIX_SOCKET_PATH": "/bitcoin/socket/esplora-bitcoin-testnet4",
+    "FALLBACK": [
+      "http://node201.fmt.mempool.space:3005",
+      "http://node202.fmt.mempool.space:3005",
+      "http://node203.fmt.mempool.space:3005",
+      "http://node204.fmt.mempool.space:3005",
+      "http://node205.fmt.mempool.space:3005",
+      "http://node206.fmt.mempool.space:3005",
+      "http://node201.va1.mempool.space:3005",
+      "http://node202.va1.mempool.space:3005",
+      "http://node203.va1.mempool.space:3005",
+      "http://node204.va1.mempool.space:3005",
+      "http://node205.va1.mempool.space:3005",
+      "http://node206.va1.mempool.space:3005",
+      "http://node207.va1.mempool.space:3005",
+      "http://node208.va1.mempool.space:3005",
+      "http://node209.va1.mempool.space:3005",
+      "http://node210.va1.mempool.space:3005",
+      "http://node211.va1.mempool.space:3005",
+      "http://node212.va1.mempool.space:3005",
+      "http://node213.va1.mempool.space:3005",
+      "http://node214.va1.mempool.space:3005",
+      "http://node201.fra.mempool.space:3005",
+      "http://node202.fra.mempool.space:3005",
+      "http://node203.fra.mempool.space:3005",
+      "http://node204.fra.mempool.space:3005",
+      "http://node205.fra.mempool.space:3005",
+      "http://node206.fra.mempool.space:3005",
+      "http://node207.fra.mempool.space:3005",
+      "http://node208.fra.mempool.space:3005",
+      "http://node209.fra.mempool.space:3005",
+      "http://node210.fra.mempool.space:3005",
+      "http://node211.fra.mempool.space:3005",
+      "http://node212.fra.mempool.space:3005",
+      "http://node213.fra.mempool.space:3005",
+      "http://node214.fra.mempool.space:3005",
+      "http://node201.tk7.mempool.space:3005",
+      "http://node202.tk7.mempool.space:3005",
+      "http://node203.tk7.mempool.space:3005",
+      "http://node204.tk7.mempool.space:3005",
+      "http://node205.tk7.mempool.space:3005",
+      "http://node206.tk7.mempool.space:3005"
+    ]
+  },
+  "DATABASE": {
+    "ENABLED": true,
+    "HOST": "127.0.0.1",
+    "SOCKET": "/var/run/mysql/mysql.sock",
+    "USERNAME": "__MEMPOOL_TESTNET4_USER__",
+    "PASSWORD": "__MEMPOOL_TESTNET4_PASS__",
+    "DATABASE": "mempool_testnet4"
+  },
+  "STATISTICS": {
+    "ENABLED": true,
+    "TX_PER_SECOND_SAMPLE_PERIOD": 150
+  }
+}
diff --git a/production/mempool-start-all b/production/mempool-start-all
index ff962f95e..c08f1ec07 100755
--- a/production/mempool-start-all
+++ b/production/mempool-start-all
@@ -4,7 +4,7 @@ source "$NVM_DIR/nvm.sh"
 nvm use v20.12.0
 
 # start all mempool backends that exist
-for site in mainnet mainnet-lightning testnet testnet-lightning signet signet-lightning liquid liquidtestnet;do
+for site in mainnet mainnet-lightning testnet testnet-lightning testnet4 signet signet-lightning liquid liquidtestnet;do
     cd "${HOME}/${site}/backend/" && \
     echo "starting mempool backend: ${site}" && \
     screen -dmS "${site}" sh -c 'while true;do npm run start-production;sleep 1;done'
diff --git a/production/nginx/location-testnet4-api.conf b/production/nginx/location-testnet4-api.conf
new file mode 100644
index 000000000..c0569ecf2
--- /dev/null
+++ b/production/nginx/location-testnet4-api.conf
@@ -0,0 +1,162 @@
+###########
+# mempool #
+###########
+
+# Block the internal APIs of esplora
+location /testnet4/api/internal/ {
+	return 404;
+}
+location /testnet4/api/v1/internal/ {
+	return 404;
+}
+
+# websocket has special HTTP headers
+location /testnet4/api/v1/ws {
+	rewrite ^/testnet4/(.*) /$1 break;
+	try_files /dev/null @mempool-testnet4-api-v1-websocket;
+}
+
+# warm cache mining and mempool API responses
+location /testnet4/api/v1/statistics {
+	rewrite ^/testnet4/(.*) /$1 break;
+	try_files /dev/null @mempool-testnet4-api-v1-cache-warm;
+}
+location /testnet4/api/v1/mining {
+	rewrite ^/testnet4/(.*) /$1 break;
+	try_files /dev/null @mempool-testnet4-api-v1-cache-warm;
+}
+
+# it's ok to cache blockchain data "forever", so we do 30d
+location /testnet4/api/v1/block/ {
+	rewrite ^/testnet4/(.*) /$1 break;
+	try_files /dev/null @mempool-testnet4-api-v1-cache-forever;
+}
+
+# everything else gets "normal" cache
+location /testnet4/api/v1 {
+	rewrite ^/testnet4/(.*) /$1 break;
+	try_files /dev/null @mempool-testnet4-api-v1-cache-normal;
+}
+
+###########
+# esplora #
+###########
+
+# it's ok to cache blockchain data "forever", so we do 30d
+location /testnet4/api/block/ {
+	rewrite ^/testnet4/api/(.*) /$1 break;
+	try_files /dev/null @esplora-testnet4-api-cache-forever;
+}
+# other API responses cannot be cached
+location /testnet4/api/ {
+	rewrite ^/testnet4/api/(.*) /$1 break;
+	try_files /dev/null @esplora-testnet4-api-cache-disabled;
+}
+
+###########
+# routing #
+###########
+
+location @mempool-testnet4-api-v1-websocket {
+	proxy_pass $mempoolTestnet4;
+	proxy_http_version 1.1;
+
+	proxy_set_header Host $host;
+	proxy_set_header X-Real-IP $remote_addr;
+	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+	proxy_set_header Upgrade $http_upgrade;
+	proxy_set_header Connection "upgrade";
+	proxy_set_header X-Forwarded-Proto $scheme;
+}
+
+location @mempool-testnet4-api-v1-cache-forever {
+	proxy_pass $mempoolTestnet4;
+
+	proxy_set_header Host $host;
+	proxy_set_header X-Real-IP $remote_addr;
+	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+	proxy_set_header X-Forwarded-Proto $scheme;
+
+	proxy_cache_background_update on;
+	proxy_cache_use_stale updating;
+	proxy_cache apicold;
+	proxy_cache_valid 200 30d;
+	proxy_redirect off;
+
+	expires 30d;
+}
+
+location @mempool-testnet4-api-v1-cache-warm {
+	proxy_pass $mempoolTestnet4;
+
+	proxy_set_header Host $host;
+	proxy_set_header X-Real-IP $remote_addr;
+	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+	proxy_set_header X-Forwarded-Proto $scheme;
+
+	proxy_cache_background_update on;
+	proxy_cache_use_stale updating;
+	proxy_cache apiwarm;
+	proxy_cache_valid 200 10s;
+	proxy_redirect off;
+}
+
+location @mempool-testnet4-api-v1-cache-normal {
+	proxy_pass $mempoolTestnet4;
+
+	proxy_set_header Host $host;
+	proxy_set_header X-Real-IP $remote_addr;
+	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+	proxy_set_header X-Forwarded-Proto $scheme;
+
+	proxy_cache apinormal;
+	proxy_cache_valid 200 10s;
+	proxy_redirect off;
+
+	expires 10s;
+}
+
+location @mempool-testnet4-api-v1-cache-disabled {
+	proxy_pass $mempoolTestnet4;
+
+	proxy_set_header Host $host;
+	proxy_set_header X-Real-IP $remote_addr;
+	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+	proxy_set_header X-Forwarded-Proto $scheme;
+
+	proxy_redirect off;
+	proxy_buffering off;
+
+	expires -1;
+}
+
+location @esplora-testnet4-api-cache-disabled {
+	proxy_pass $esploraTestnet4;
+
+	proxy_set_header Host $host;
+	proxy_set_header X-Real-IP $remote_addr;
+	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+	proxy_set_header X-Forwarded-Proto $scheme;
+
+	proxy_redirect off;
+	proxy_buffering off;
+
+	expires -1;
+}
+
+location @esplora-testnet4-api-cache-forever {
+	proxy_pass $esploraTestnet4;
+
+	proxy_set_header Host $host;
+	proxy_set_header X-Real-IP $remote_addr;
+	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+	proxy_set_header X-Forwarded-Proto $scheme;
+
+	proxy_cache_background_update on;
+	proxy_cache_use_stale updating;
+	proxy_cache apicold;
+	proxy_cache_valid 200 30d;
+	proxy_redirect off;
+
+	expires 30d;
+}
diff --git a/production/nginx/nginx.conf b/production/nginx/nginx.conf
index c48d4992a..169faab30 100644
--- a/production/nginx/nginx.conf
+++ b/production/nginx/nginx.conf
@@ -55,12 +55,14 @@ http {
 		set $mempoolMainnetLightning "http://mempool-bitcoin-mainnet-lightning";
 		set $mempoolTestnet "http://mempool-bitcoin-testnet";
 		set $mempoolTestnetLightning "http://mempool-bitcoin-testnet-lightning";
+		set $mempoolTestnet4 "http://mempool-bitcoin-testnet4";
 		set $mempoolSignet "http://mempool-bitcoin-signet";
 		set $mempoolSignetLightning "http://mempool-bitcoin-signet-lightning";
 
 		# for blockstream/esplora daemons, see upstream-esplora.conf
 		set $esploraMainnet "http://esplora-bitcoin-mainnet";
 		set $esploraTestnet "http://esplora-bitcoin-testnet";
+		set $esploraTestnet4 "http://esplora-bitcoin-testnet4";
 		set $esploraSignet "http://esplora-bitcoin-signet";
 
 		# filesystem paths
diff --git a/production/nginx/server-mempool.conf b/production/nginx/server-mempool.conf
index 892fe50e1..a63c27fca 100644
--- a/production/nginx/server-mempool.conf
+++ b/production/nginx/server-mempool.conf
@@ -5,5 +5,7 @@ include mempool/production/nginx/location-api-v1-lightning.conf;
 include mempool/production/nginx/location-api.conf;
 include mempool/production/nginx/location-testnet-api.conf;
 include mempool/production/nginx/location-testnet-api-v1-lightning.conf;
+include mempool/production/nginx/location-testnet4-api.conf;
+#include mempool/production/nginx/location-testnet4-api-v1-lightning.conf;
 include mempool/production/nginx/location-signet-api.conf;
 include mempool/production/nginx/location-signet-api-v1-lightning.conf;
diff --git a/production/nginx/upstream-esplora.conf b/production/nginx/upstream-esplora.conf
index b7fbbf163..88ffa11bd 100644
--- a/production/nginx/upstream-esplora.conf
+++ b/production/nginx/upstream-esplora.conf
@@ -7,6 +7,9 @@ upstream esplora-liquid-mainnet {
 upstream esplora-bitcoin-testnet {
 	server unix:/bitcoin/socket/esplora-bitcoin-testnet fail_timeout=10s max_fails=10 weight=99999;
 }
+upstream esplora-bitcoin-testnet4 {
+	server unix:/bitcoin/socket/esplora-bitcoin-testnet4 fail_timeout=10s max_fails=10 weight=99999;
+}
 upstream esplora-bitcoin-signet {
 	server unix:/bitcoin/socket/esplora-bitcoin-signet fail_timeout=10s max_fails=10 weight=99999;
 }
diff --git a/production/nginx/upstream-mempool.conf b/production/nginx/upstream-mempool.conf
index c9cf9c2bb..50d291910 100644
--- a/production/nginx/upstream-mempool.conf
+++ b/production/nginx/upstream-mempool.conf
@@ -7,9 +7,6 @@ upstream mempool-liquid-mainnet {
 upstream mempool-bitcoin-testnet {
 	server 127.0.0.1:8997 fail_timeout=10s max_fails=10 weight=99999;
 }
-upstream mempool-bitcoin-bisq {
-	server 127.0.0.1:8996 fail_timeout=10s max_fails=10 weight=99999;
-}
 upstream mempool-bitcoin-signet {
 	server 127.0.0.1:8995 fail_timeout=10s max_fails=10 weight=99999;
 }
@@ -25,3 +22,6 @@ upstream mempool-bitcoin-testnet-lightning {
 upstream mempool-bitcoin-signet-lightning {
 	server 127.0.0.1:8991 fail_timeout=10s max_fails=10 weight=99999;
 }
+upstream mempool-bitcoin-testnet4 {
+	server 127.0.0.1:8990 fail_timeout=10s max_fails=10 weight=99999;
+}
diff --git a/rust/gbt/Cargo.lock b/rust/gbt/Cargo.lock
index d7ac48ec7..ed0b1c783 100644
--- a/rust/gbt/Cargo.lock
+++ b/rust/gbt/Cargo.lock
@@ -93,7 +93,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ad291aa74992b9b7a7e88c38acbbf6ad7e107f1d90ee8775b7bc1fc3394f485c"
 dependencies = [
  "quote",
- "syn",
+ "syn 2.0.52",
 ]
 
 [[package]]
@@ -159,12 +159,12 @@ checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
 
 [[package]]
 name = "libloading"
-version = "0.8.3"
+version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c2a198fb6b0eada2a8df47933734e6d35d350665a33a3593d7164fa52c75c19"
+checksum = "b67380fd3b2fbe7527a606e18729d21c6f3951633d0500574c4dc22d2d638b9f"
 dependencies = [
  "cfg-if",
- "windows-targets",
+ "winapi",
 ]
 
 [[package]]
@@ -199,9 +199,9 @@ dependencies = [
 
 [[package]]
 name = "napi"
-version = "2.16.0"
+version = "2.13.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54a63d0570e4c3e0daf7a8d380563610e159f538e20448d6c911337246f40e84"
+checksum = "fd063c93b900149304e3ba96ce5bf210cd4f81ef5eb80ded0d100df3e85a3ac0"
 dependencies = [
  "bitflags",
  "ctor",
@@ -213,29 +213,29 @@ dependencies = [
 
 [[package]]
 name = "napi-build"
-version = "2.1.2"
+version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f9130fccc5f763cf2069b34a089a18f0d0883c66aceb81f2fad541a3d823c43"
+checksum = "882a73d9ef23e8dc2ebbffb6a6ae2ef467c0f18ac10711e4cc59c5485d41df0e"
 
 [[package]]
 name = "napi-derive"
-version = "2.16.0"
+version = "2.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05bb7c37e3c1dda9312fdbe4a9fc7507fca72288ba154ec093e2d49114e727ce"
+checksum = "da1c6a8fa84d549aa8708fcd062372bf8ec6e849de39016ab921067d21bde367"
 dependencies = [
  "cfg-if",
  "convert_case",
  "napi-derive-backend",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
 name = "napi-derive-backend"
-version = "1.0.62"
+version = "1.0.52"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f785a8b8d7b83e925f5aa6d2ae3c159d17fe137ac368dc185bef410e7acdaeb4"
+checksum = "20bbc7c69168d06a848f925ec5f0e0997f98e8c8d4f2cc30157f0da51c009e17"
 dependencies = [
  "convert_case",
  "once_cell",
@@ -243,14 +243,14 @@ dependencies = [
  "quote",
  "regex",
  "semver",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
 name = "napi-sys"
-version = "2.3.0"
+version = "2.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2503fa6af34dc83fb74888df8b22afe933b58d37daf7d80424b1c60c68196b8b"
+checksum = "166b5ef52a3ab5575047a9fe8d4a030cdd0f63c96f071cd6907674453b07bae3"
 dependencies = [
  "libloading",
 ]
@@ -333,14 +333,14 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.10.3"
+version = "1.9.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b62dbe01f0b06f9d8dc7d49e05a0785f153b00b2c227856282f671e0318c9b15"
+checksum = "ebee201405406dbf528b8b672104ae6d6d63e6d118cb10e4d51abbc7b58044ff"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-automata 0.4.6",
- "regex-syntax 0.8.2",
+ "regex-automata 0.3.9",
+ "regex-syntax 0.7.5",
 ]
 
 [[package]]
@@ -354,13 +354,13 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.6"
+version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86b83b8b9847f9bf95ef68afb0b8e6cdb80f498442f5179a29fad448fcc1eaea"
+checksum = "59b23e92ee4318893fa3fe3e6fb365258efbfe6ac6ab30f090cdcbb7aa37efa9"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-syntax 0.8.2",
+ "regex-syntax 0.7.5",
 ]
 
 [[package]]
@@ -371,9 +371,9 @@ checksum = "f162c6dd7b008981e4d40210aca20b4bd0f9b60ca9271061b07f78537722f2e1"
 
 [[package]]
 name = "regex-syntax"
-version = "0.8.2"
+version = "0.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
+checksum = "dbb5fb1acd8a1a18b3dd5be62d25485eb770e05afb408a9627d14d451bae12da"
 
 [[package]]
 name = "rustc-demangle"
@@ -402,6 +402,17 @@ version = "1.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6ecd384b10a64542d77071bd64bd7b231f4ed5940fba55e98c3de13824cf3d7"
 
+[[package]]
+name = "syn"
+version = "1.0.109"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "syn"
 version = "2.0.52"
@@ -453,7 +464,7 @@ checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.52",
 ]
 
 [[package]]
@@ -534,60 +545,3 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
-
-[[package]]
-name = "windows-targets"
-version = "0.52.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7dd37b7e5ab9018759f893a1952c9420d060016fc19a472b4bb20d1bdd694d1b"
-dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
-]
-
-[[package]]
-name = "windows_aarch64_gnullvm"
-version = "0.52.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bcf46cf4c365c6f2d1cc93ce535f2c8b244591df96ceee75d8e83deb70a9cac9"
-
-[[package]]
-name = "windows_aarch64_msvc"
-version = "0.52.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da9f259dd3bcf6990b55bffd094c4f7235817ba4ceebde8e6d11cd0c5633b675"
-
-[[package]]
-name = "windows_i686_gnu"
-version = "0.52.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b474d8268f99e0995f25b9f095bc7434632601028cf86590aea5c8a5cb7801d3"
-
-[[package]]
-name = "windows_i686_msvc"
-version = "0.52.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1515e9a29e5bed743cb4415a9ecf5dfca648ce85ee42e15873c3cd8610ff8e02"
-
-[[package]]
-name = "windows_x86_64_gnu"
-version = "0.52.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5eee091590e89cc02ad514ffe3ead9eb6b660aedca2183455434b93546371a03"
-
-[[package]]
-name = "windows_x86_64_gnullvm"
-version = "0.52.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77ca79f2451b49fa9e2af39f0747fe999fcda4f5e241b2898624dca97a1f2177"
-
-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.52.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32b752e52a2da0ddfbdbcc6fceadfeede4c939ed16d13e648833a61dfb611ed8"
diff --git a/rust/gbt/Cargo.toml b/rust/gbt/Cargo.toml
index c6e736762..898912881 100644
--- a/rust/gbt/Cargo.toml
+++ b/rust/gbt/Cargo.toml
@@ -14,15 +14,15 @@ crate-type = ["cdylib"]
 [dependencies]
 priority-queue = "2.0.2"
 bytes = "1.4.0"
-napi = { version = "2.16.0", features = ["napi8", "tokio_rt"] }
-napi-derive = "2.16.0"
+napi = { version = "2.0", features = ["napi8", "tokio_rt"] }
+napi-derive = "2.0"
 bytemuck = "1.13.1"
 tracing = "0.1.36"
 tracing-log = "0.2.0"
 tracing-subscriber = { version = "0.3.15", features = ["env-filter"]}
 
 [build-dependencies]
-napi-build = "2.1.2"
+napi-build = "2.0"
 
 [profile.release]
 lto = true
diff --git a/rust/gbt/rust-toolchain b/rust/gbt/rust-toolchain
index 5b6cd6b3c..58e4eb6b2 100644
--- a/rust/gbt/rust-toolchain
+++ b/rust/gbt/rust-toolchain
@@ -1 +1 @@
-1.65
+1.63
diff --git a/unfurler/package-lock.json b/unfurler/package-lock.json
index 1232e3716..ded1af081 100644
--- a/unfurler/package-lock.json
+++ b/unfurler/package-lock.json
@@ -9,7 +9,7 @@
       "version": "3.0.0-dev",
       "dependencies": {
         "@types/node": "^16.11.41",
-        "ejs": "^3.1.9",
+        "ejs": "^3.1.10",
         "express": "^4.19.2",
         "node-fetch-commonjs": "^3.3.1",
         "puppeteer": "^15.3.2",
@@ -772,9 +772,9 @@
       "integrity": "sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow=="
     },
     "node_modules/ejs": {
-      "version": "3.1.9",
-      "resolved": "https://registry.npmjs.org/ejs/-/ejs-3.1.9.tgz",
-      "integrity": "sha512-rC+QVNMJWv+MtPgkt0y+0rVEIdbtxVADApW9JXrUVlzHetgcyczP/E7DJmWJ4fJCZF2cPcBk0laWO9ZHMG3DmQ==",
+      "version": "3.1.10",
+      "resolved": "https://registry.npmjs.org/ejs/-/ejs-3.1.10.tgz",
+      "integrity": "sha512-UeJmFfOrAQS8OJWPZ4qtgHyWExa088/MtK5UEyoJGFH67cDEXkZSviOiKRCZ4Xij0zxI3JECgYs3oKx+AizQBA==",
       "dependencies": {
         "jake": "^10.8.5"
       },
@@ -3306,9 +3306,9 @@
       "integrity": "sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow=="
     },
     "ejs": {
-      "version": "3.1.9",
-      "resolved": "https://registry.npmjs.org/ejs/-/ejs-3.1.9.tgz",
-      "integrity": "sha512-rC+QVNMJWv+MtPgkt0y+0rVEIdbtxVADApW9JXrUVlzHetgcyczP/E7DJmWJ4fJCZF2cPcBk0laWO9ZHMG3DmQ==",
+      "version": "3.1.10",
+      "resolved": "https://registry.npmjs.org/ejs/-/ejs-3.1.10.tgz",
+      "integrity": "sha512-UeJmFfOrAQS8OJWPZ4qtgHyWExa088/MtK5UEyoJGFH67cDEXkZSviOiKRCZ4Xij0zxI3JECgYs3oKx+AizQBA==",
       "requires": {
         "jake": "^10.8.5"
       }
diff --git a/unfurler/package.json b/unfurler/package.json
index ad0c2b7fe..6608ce1a9 100644
--- a/unfurler/package.json
+++ b/unfurler/package.json
@@ -19,7 +19,7 @@
   "dependencies": {
     "@types/node": "^16.11.41",
     "express": "^4.19.2",
-    "ejs": "^3.1.9",
+    "ejs": "^3.1.10",
     "node-fetch-commonjs": "^3.3.1",
     "puppeteer": "^15.3.2",
     "puppeteer-cluster": "^0.23.0",