multi: add testnet4 support

chainreg/chainparams.go

@@ -22,6 +22,14 @@ var BitcoinTestNetParams = BitcoinNetParams{
 	CoinType: keychain.CoinTypeTestnet,
 }
 
+// BitcoinTestNet4Params contains parameters specific to the 4th version of the
+// test network.
+var BitcoinTestNet4Params = BitcoinNetParams{
+	Params:   &bitcoinCfg.TestNet4Params,
+	RPCPort:  "48334",
+	CoinType: keychain.CoinTypeTestnet,
+}
+
 // BitcoinMainNetParams contains parameters specific to the current Bitcoin
 // mainnet.
 var BitcoinMainNetParams = BitcoinNetParams{
@@ -53,8 +61,9 @@ var BitcoinRegTestNetParams = BitcoinNetParams{
 	CoinType: keychain.CoinTypeTestnet,
 }
 
-// IsTestnet tests if the givern params correspond to a testnet
-// parameter configuration.
+// IsTestnet tests if the given params correspond to a testnet parameter
+// configuration.
 func IsTestnet(params *BitcoinNetParams) bool {
-	return params.Params.Net == bitcoinWire.TestNet3
+	return params.Params.Net == bitcoinWire.TestNet3 ||
+		params.Params.Net == bitcoinWire.TestNet4
 }

chainreg/chainregistry.go

@@ -838,6 +838,15 @@ var (
 		0x01, 0xea, 0x33, 0x09, 0x00, 0x00, 0x00, 0x00,
 	})
 
+	// BitcoinTestnet4Genesis is the genesis hash of Bitcoin's testnet4
+	// chain.
+	BitcoinTestnet4Genesis = chainhash.Hash([chainhash.HashSize]byte{
+		0x43, 0xf0, 0x8b, 0xda, 0xb0, 0x50, 0xe3, 0x5b,
+		0x56, 0x7c, 0x86, 0x4b, 0x91, 0xf4, 0x7f, 0x50,
+		0xae, 0x72, 0x5a, 0xe2, 0xde, 0x53, 0xbc, 0xfb,
+		0xba, 0xf2, 0x84, 0xda, 0x00, 0x00, 0x00, 0x00,
+	})
+
 	// BitcoinSignetGenesis is the genesis hash of Bitcoin's signet chain.
 	BitcoinSignetGenesis = chainhash.Hash([chainhash.HashSize]byte{
 		0xf6, 0x1e, 0xee, 0x3b, 0x63, 0xa3, 0x80, 0xa4,