Hi I was attempting to create a 2of2 P2SH-P2WSH address using bitcoinj.
Since I couldn't properly sign(invalid private key from bitcoind) received
output I wanted verify that I am correctly creating this address.
Here is the* code used*. Library used is *0.14.5.* with some inspiration
taken from* segwit branch* on github.
final List<String> privKeys =
Arrays.asList("c3accc350d70d1981c4366fd6fd86d9cc311048ae8620dac0b3dc9d18ce415fa",
"1093e97f3c01bd766473cc51441d443e9325a59387421a9e2fb69b7f9587d915");
List<ECKey> ecKeys = new ArrayList<>();
final SecureRandom secureRandom = getSecureRandom();
privKeys.forEach(privKey -> {
try {
final ECKey ecKey =
ECKey.fromPrivate(Hex.decodeHex(privKey.toCharArray()));
ecKeys.add(ecKey);
System.out.println(String.format("Private Key %s",
ecKey.getPrivateKeyAsHex()));
System.out.println(String.format("Public Key %s",
ecKey.getPublicKeyAsHex()));
System.out.println("--------------------------------------------------------");
}
catch (DecoderException e) {
throw new RuntimeException(e);
}
});
System.out.println();
final Script witnessProgram = ScriptBuilder.createRedeemScript(2,
ecKeys);
System.out.println("Witness program=" + witnessProgram);
System.out.println("Witness hex=" +
Hex.encodeHexString(witnessProgram.getProgram()) + "\n");
byte[] hash = Sha256Hash.hash(witnessProgram.getProgram());
final Script redeemScript = new
ScriptBuilder().smallNum(0).data(hash).build();
System.out.println("redeemScript program=" + redeemScript);
System.out.println("redeemScript hex=" +
Hex.encodeHexString(redeemScript.getProgram()) + "\n");
final Script scriptPubKey =
ScriptBuilder.createP2SHOutputScript(redeemScript);
System.out.println("scriptPubKey program=" + scriptPubKey);
System.out.println("scriptPubKey hex=" +
Hex.encodeHexString(scriptPubKey.getProgram()) + "\n");
final org.bitcoinj.core.Address addressT =
scriptPubKey.getToAddress(TestNet3Params.get());
System.out.println(String.format("TestNetAddress=%s", addressT));
*Program output:*
Private Key c3accc350d70d1981c4366fd6fd86d9cc311048ae8620dac0b3dc9d18ce415fa
Public Key
0320ce424c6d61f352ccfea60d209651672cfb03b2dc77d1d64d3ba519aec756ae
--------------------------------------------------------
Private Key 1093e97f3c01bd766473cc51441d443e9325a59387421a9e2fb69b7f9587d915
Public Key
020b020e27e49f049eac10010506499a84e1d59a500cd3680e9ded580df9a107b0
--------------------------------------------------------
Witness program=2
PUSHDATA(33)[020b020e27e49f049eac10010506499a84e1d59a500cd3680e9ded580df9a107b0]
PUSHDATA(33)[0320ce424c6d61f352ccfea60d209651672cfb03b2dc77d1d64d3ba519aec756ae]
2 CHECKMULTISIG
Witness
hex=5221020b020e27e49f049eac10010506499a84e1d59a500cd3680e9ded580df9a107b0210320ce424c6d61f352ccfea60d209651672cfb03b2dc77d1d64d3ba519aec756ae52ae
redeemScript program=0
PUSHDATA(32)[16a91e58e02069f95ea6defba7436199658573c34d384c69779779f4500d7cac]
redeemScript
hex=002016a91e58e02069f95ea6defba7436199658573c34d384c69779779f4500d7cac
scriptPubKey program=HASH160
PUSHDATA(20)[035e0a0739eec3c195f9dc0d8b85e6e3f6ae1ece] EQUAL
scriptPubKey hex=a914035e0a0739eec3c195f9dc0d8b85e6e3f6ae1ece87
TestNetAddress=2MsZ2fpGKUydzY62v6trPHR8eCx5JTy1Dpa
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