bitcoinjs-lib 節點 js 原始交易

Question

 var bitcoin = require('bitcoinjs-lib'); var rp = require('request-promise'); var data = Buffer.from('Hello World', 'utf8'); var testnet = bitcoin.networks.testnet; var privateKey = 'p2pkh'; var SourceAddress = "myaddress"; var url = "https://chain.so/api/v2/get_tx_unspent/BTCTEST/"+SourceAddress; var DestionationAddress = '2MsHsi4CHXsaNZSq5krnrpP4WShNgtuRa9U'; var options = { uri: url, json: true }; rp(options).then(function (response) { var index = response.data.txs.length - 1; console.log(response.data.txs[index]); var UtxoId = response.data.txs[index].txid; var vout = response.data.txs[index].output_no; var amount = Number(response.data.txs[index].value*100000000); var fee = 0.0005*100000000; }).catch(function (err) { console.error(err);}); const RawTransaction = new bitcoin.TransactionBuilder(testnet); RawTransaction.addInput(UtxoId, vout); RawTransaction.addOutput(DestionationAddress, parseInt(amount-fee)); scrypt = bitcoin.script.compile([bitcoin.opcodes.OP_RETURN,data]); RawTransaction.addOutput(scrypt, 0); var keyPair = bitcoin.ECPair.fromWIF(privateKeyWIF, testnet); tx.sign(0, keyPair); const p2wpkh = bitcoin.payments.p2wpkh({ pubkey: keyPair.publicKey, network: bitcoin.networks.testnet }); const p2sh = bitcoin.payments.p2sh({ redeem: p2wpkh, network: bitcoin.networks.testnet }); RawTransaction.sign(0, keyPair, p2sh.redeem.output, null, parseInt(amount)); var Transaction=RawTransaction.build().toHex(); var Sendingoptions = { method: 'POST', url: 'https://chain.so/api/v2/send_tx/BTCTEST', body: {tx_hex: Transaction}, json: true}; rp(Sendingoptions).then(function (response) { var Jresponse = JSON.stringify(response); console.log("Transaction ID:\\n"+Jresponse); }).catch(function (err) { console.error(err); });

我試圖創建一個原始事務，但不知道為什么它顯示未定義 UtoxId 的錯誤。

RawTransaction.addInput(UtxoId, vout);
                        ^

ReferenceError: UtxoId is not defined
    at Object.<anonymous> (/home/ubuntu/Documents/blockchain/hello.js:27:25)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:623:3)

我認為這可能包含更多錯誤，因為它在 UtoxId 處停止。 但我想知道如何解決這個問題，並將我的輸出作為交易 ID、腳本十六進制、值、時間等。

Answer 1

變量 UtxoId 是 request-promise 塊的一部分。

嘗試：

let UtxoId
rp(options).then(function (response) {
    var index = response.data.txs.length - 1;
    console.log(response.data.txs[index]);
    UtxoId = response.data.txs[index].txid;
    var vout = response.data.txs[index].output_no;
    var amount = Number(response.data.txs[index].value*100000000);
    var fee = 0.0005*100000000;
}).catch(function (err) { console.error(err);});

const RawTransaction = new bitcoin.TransactionBuilder(testnet);
RawTransaction.addInput(UtxoId, vout);