使用 bitcoinjs-lib 发送比特币

Question

I'm following tutorial for bitcoinjs at https://medium.com/@orweinberger/how-to-create-a-raw-transaction-using-bitcoinjs-lib-1347a502a3a#.wkf9g2lk0

I receive undefined error for

var key = bitcoin.ECKey.fromWIF("L1Kzcyy88LyckShYdvoLFg1FYpB5ce1JmTYtieHrhkN65GhVoq73");

Reading https://github.com/bitcoinjs/bitcoinjs-lib/issues/487 I use instead

var key = bitcoin.ECPair.fromWIF("L1Kzcyy88LyckShYdvoLFg1FYpB5ce1JmTYtieHrhkN65GhVoq73");

For line : console.log(key.pub.getAddress().toString()); (from tutorial)

I receive similar exception :

TypeError: Cannot read property 'getAddress' of undefined
    at repl:1:20
    at REPLServer.defaultEval (repl.js:262:27)
    at bound (domain.js:287:14)
    at REPLServer.runBound [as eval] (domain.js:300:12)
    at REPLServer.<anonymous> (repl.js:431:12)
    at emitOne (events.js:82:20)
    at REPLServer.emit (events.js:169:7)
    at REPLServer.Interface._onLine (readline.js:211:10)
    at REPLServer.Interface._line (readline.js:550:8)
    at REPLServer.Interface._ttyWrite (readline.js:827:14)

'getAddress' method is also deprecated, what to use instead ?

Any other tutorials for sending bitcoins ? They seem difficult to find ?

Answer 1

This should work

var key = bitcoin.ECPair.fromWIF("L1Kzcyy88LyckShYdvoLFg1FYpB5ce1JmTYtieHrhkN65GhVoq73");
var address = key.getAddress().toString()

console.log(address) // 17hFoVScNKVDfDTT6vVhjYwvCu6iDEiXC4

Answer 2

Better still using newer version of bitcoin.js library do

 const bitcoin = require('bitcoinjs-lib'); let keyPair = bitcoin.ECPair.makeRandom(); let publicKey = keyPair.publicKey const { address } = bitcoin.payments.p2pkh({ pubkey: publicKey }); const privateKey = keyPair.toWIF(); console.log(address) console.log(privateKey)