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freeze-st.js
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freeze-st.js
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'use strict';
const LOCK_UNTIL_BLOCK = 150; // pick a block height above the current tip
const bitcore = require('bitcore-lib'); // bitcore-lib should be in the same folder as the js file
bitcore.Networks.defaultNetwork = bitcore.Networks.testnet;
var privateKey = new bitcore.PrivateKey();
var publicKey = privateKey.toAddress();
var scriptPubKey = new bitcore.Script()
.add(bitcore.crypto.BN.fromNumber(LOCK_UNTIL_BLOCK).toScriptNumBuffer())
.add(bitcore.Opcode.OP_CHECKLOCKTIMEVERIFY)
.add(bitcore.Opcode.OP_DROP)
.add(bitcore.Opcode.OP_DUP)
.add(bitcore.Opcode.OP_HASH160)
.add(bitcore.Script.buildPublicKeyHashOut(publicKey))
.add(bitcore.Opcode.OP_EQUALVERIFY).add(bitcore.Opcode.OP_CHECKSIG);
var address = bitcore.Address.payingTo(scriptPubKey);
var utxo = {
txid: "ea20e154fdf6f3ab4b1e16c0a2b638d87028c66822113395169241312cdce501", // tran id
vout: 0, // output index of the utxo
scriptPubKey: "00141149fd1966ae60c2345df6f85a758617a00cbe42", // scriptPubKey of the utxo
satoshis: 1000000000, // value of the utxo txid[vout]
};
var freezeTrans = new bitcore.Transaction().from(utxo)
.to(address,1000000000)
.sign(privateKey);
const getSpendTransaction = function(lockTime, sequenceNo) {
var utxo_trans = {
txid: freezeTrans.id,
vout: 0,
scriptPubKey: scriptPubKey.toScriptHashOut(),
satoshis: 1000000000,
};
var transaction = new bitcore.Transaction().from(utxo_trans)
.to(privateKey.toAddress(), 1000000000 - 300000000) // send back to the first Addr
.lockUntilBlockHeight(lockTime);
transaction.inputs[0].sequenceNumber = sequenceNo;
var signature = bitcore.Transaction.sighash.sign(
transaction,
privateKey,
bitcore.crypto.Signature.SIGHASH_ALL,
0,
scriptPubKey
);
transaction.inputs[0].setScript(
bitcore.Script.empty()
.add(signature.toTxFormat())
.add(privateKey.toPublicKey().toBuffer())
.add(scriptPubKey.toBuffer())
);
return transaction;
};
var spendTransaction = getSpendTransaction(LOCK_UNTIL_BLOCK, 0);
var brokenSpendTransaction = getSpendTransaction(LOCK_UNTIL_BLOCK, 0xffffffff); //Infinit sequence number
var result = {
fromAddress: privateKey.toAddress().toString(),
p2shAddress: address.toString(),
redeemScript: scriptPubKey.toString(),
freezeTransaction: {
txid: freezeTrans.id,
raw: freezeTrans.serialize(true),
},
spendTransaction: {
txid: spendTransaction.id,
raw: spendTransaction.serialize(true),
},
brokenSpendTransaction: {
txid: brokenSpendTransaction.id,
raw: brokenSpendTransaction.serialize(true),
},
};
console.log(JSON.stringify(result, null, 2));