diff --git a/build.gradle b/build.gradle
index e5c9875a..15bde121 100644
--- a/build.gradle
+++ b/build.gradle
@@ -124,7 +124,7 @@ dependencies {
         exclude group: 'org.slf4j'
     }
     implementation('com.sparrowwallet.bokmakierie:bokmakierie:1.0')
-    implementation('io.samourai.code.whirlpool:whirlpool-client:1.0.0-beta4')
+    implementation('io.samourai.code.whirlpool:whirlpool-client:1.0.0-beta10')
     implementation('io.samourai.code.wallet:java-http-client:2.0.0-beta3')
     implementation('io.reactivex.rxjava2:rxjava:2.2.15')
     implementation('io.reactivex.rxjava2:rxjavafx:2.2.2')
diff --git a/src/main/java/com/sparrowwallet/sparrow/soroban/CounterpartyController.java b/src/main/java/com/sparrowwallet/sparrow/soroban/CounterpartyController.java
index 9ea0ed63..b54bcc98 100644
--- a/src/main/java/com/sparrowwallet/sparrow/soroban/CounterpartyController.java
+++ b/src/main/java/com/sparrowwallet/sparrow/soroban/CounterpartyController.java
@@ -330,20 +330,18 @@ public class CounterpartyController extends SorobanController {
                     }
                 }
             };
-            sorobanWalletCounterparty.counterparty(cahootsContext, initiatorPaymentCode, onProgress)
-                    .subscribeOn(Schedulers.io())
-                    .observeOn(JavaFxScheduler.platform())
-                    .subscribe(cahoots -> {
-                                // cahoots success
-                            }, error -> {
-                                log.error("Error creating mix transaction", error);
-                                String cutFrom = "Exception: ";
-                                int index = error.getMessage().lastIndexOf(cutFrom);
-                                String msg = index < 0 ? error.getMessage() : error.getMessage().substring(index + cutFrom.length());
-                                msg = msg.replace("#Cahoots", "mix transaction");
-                                step3Desc.setText(msg);
-                                sorobanProgressLabel.setVisible(false);
-                            });
+            try {
+                // TODO run in background thread?
+                Cahoots result = sorobanWalletCounterparty.counterparty(cahootsContext, initiatorPaymentCode, onProgress);
+            } catch (Exception error) {
+                log.error("Error creating mix transaction", error);
+                String cutFrom = "Exception: ";
+                int index = error.getMessage().lastIndexOf(cutFrom);
+                String msg = index < 0 ? error.getMessage() : error.getMessage().substring(index + cutFrom.length());
+                msg = msg.replace("#Cahoots", "mix transaction");
+                step3Desc.setText(msg);
+                sorobanProgressLabel.setVisible(false);
+            }
         } catch(Exception e) {
             log.error("Error creating mix transaction", e);
             sorobanProgressLabel.setText(e.getMessage());
diff --git a/src/main/java/com/sparrowwallet/sparrow/soroban/InitiatorController.java b/src/main/java/com/sparrowwallet/sparrow/soroban/InitiatorController.java
index 27081293..c9e5bc07 100644
--- a/src/main/java/com/sparrowwallet/sparrow/soroban/InitiatorController.java
+++ b/src/main/java/com/sparrowwallet/sparrow/soroban/InitiatorController.java
@@ -494,17 +494,16 @@ public class InitiatorController extends SorobanController {
             };
             SorobanWalletService sorobanWalletService = soroban.getSorobanWalletService();
             sorobanProgressLabel.setText("Waiting for mix partner...");
-            sorobanWalletService.getSorobanWalletInitiator(cahootsWallet).meetAndInitiate(cahootsContext, paymentCodeCounterparty, listener)
-                    .subscribeOn(Schedulers.io())
-                    .observeOn(JavaFxScheduler.platform())
-                    .subscribe(sorobanResponse -> {
-                    }, error -> {
-                        log.error("Error receiving meeting response", error);
-                        step2Desc.setText(getErrorMessage(error));
-                        sorobanProgressLabel.setVisible(false);
-                        meetingFail.setVisible(true);
-                        requestUserAttention();
-                    });
+            try {
+                // TODO run in background thread?
+                Cahoots result = sorobanWalletService.getSorobanWalletInitiator(cahootsWallet).meetAndInitiate(cahootsContext, paymentCodeCounterparty, listener);
+            } catch (Exception error){
+                log.error("Error receiving meeting response", error);
+                step2Desc.setText(getErrorMessage(error));
+                sorobanProgressLabel.setVisible(false);
+                meetingFail.setVisible(true);
+                requestUserAttention();
+            }
         }, error -> {
             log.error("Could not retrieve payment code", error);
             if(error.getMessage().endsWith("404")) {
diff --git a/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowDataSource.java b/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowDataSource.java
index 4a2a189e..7c6ab4e2 100644
--- a/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowDataSource.java
+++ b/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowDataSource.java
@@ -52,7 +52,7 @@ public class SparrowDataSource extends AbstractDataSource {
         super(whirlpoolWallet, bip44w, walletStateSupplier, dataSourceConfig);
         this.seenBackend = computeSeenBackend(whirlpoolWallet.getConfig());
         this.pushTx = computePushTx();
-        this.utxoSupplier = new SparrowUtxoSupplier(whirlpoolWallet, walletSupplier, utxoConfigSupplier, dataSourceConfig);
+        this.utxoSupplier = new SparrowUtxoSupplier(walletSupplier, utxoConfigSupplier, dataSourceConfig);
     }
 
     private ISeenBackend computeSeenBackend(WhirlpoolWalletConfig whirlpoolWalletConfig) {
diff --git a/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowSeenBackend.java b/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowSeenBackend.java
index 4fa9a330..bd458ec3 100644
--- a/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowSeenBackend.java
+++ b/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowSeenBackend.java
@@ -5,6 +5,8 @@ import com.samourai.wallet.api.backend.seenBackend.SeenResponse;
 import com.samourai.wallet.httpClient.IHttpClient;
 
 import java.util.Collection;
+import java.util.LinkedHashMap;
+import java.util.Map;
 
 public class SparrowSeenBackend implements ISeenBackend {
     private IHttpClient httpClient;
@@ -15,7 +17,11 @@ public class SparrowSeenBackend implements ISeenBackend {
 
     @Override
     public SeenResponse seen(Collection<String> addresses) throws Exception {
-        return null; // TODO implement: check if each address already received funds
+        Map<String,Boolean> map = new LinkedHashMap<>();
+        for (String address : addresses) {
+            map.put(address, seen(address));
+        }
+        return new SeenResponse(map);
     }
 
     @Override
diff --git a/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowUtxoSupplier.java b/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowUtxoSupplier.java
index 9bdb7d84..eb2c1a11 100644
--- a/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowUtxoSupplier.java
+++ b/src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowUtxoSupplier.java
@@ -26,11 +26,10 @@ public class SparrowUtxoSupplier extends BasicUtxoSupplier {
     private static final Logger log = LoggerFactory.getLogger(SparrowUtxoSupplier.class);
 
     public SparrowUtxoSupplier(
-            WhirlpoolWallet whirlpoolWallet,
             WalletSupplier walletSupplier,
             UtxoConfigSupplier utxoConfigSupplier,
             DataSourceConfig dataSourceConfig) {
-        super(whirlpoolWallet, walletSupplier, utxoConfigSupplier, dataSourceConfig);
+        super(walletSupplier, utxoConfigSupplier, dataSourceConfig);
     }
 
     @Override