bitcoin_flutter

A dart Bitcoin library for Flutter.

Released under the terms of the MIT LICENSE.

Inspired by bitcoinjs

Otherwise, pull requests are appreciated.

Installing

Flutter Packages

Examples

import 'package:bitcoin_flutter/bitcoin_flutter.dart';
import 'package:bip39/bip39.dart' as bip39;

main() {
  var seed = bip39.mnemonicToSeed("praise you muffin lion enable neck grocery crumble super myself license ghost");
  var hdWallet = new HDWallet.fromSeed(seed);
  print(hdWallet.address);
  // => 12eUJoaWBENQ3tNZE52ZQaHqr3v4tTX4os
  print(hdWallet.pubKey);
  // => 0360729fb3c4733e43bf91e5208b0d240f8d8de239cff3f2ebd616b94faa0007f4
  print(hdWallet.privKey);
  // => 01304181d699cd89db7de6337d597adf5f78dc1f0784c400e41a3bd829a5a226
  print(hdWallet.wif);
  // => KwG2BU1ERd3ndbFUrdpR7ymLZbsd7xZpPKxsgJzUf76A4q9CkBpY

  var wallet = Wallet.fromWIF("Kxr9tQED9H44gCmp6HAdmemAzU3n84H3dGkuWTKvE23JgHMW8gct");
  print(wallet.address);
  // => 19AAjaTUbRjQCMuVczepkoPswiZRhjtg31
  print(wallet.pubKey);
  // => 03aea0dfd576151cb399347aa6732f8fdf027b9ea3ea2e65fb754803f776e0a509
  print(wallet.privKey);
  // => 3095cb26affefcaaa835ff968d60437c7c764da40cdd1a1b497406c7902a8ac9
  print(wallet.wif);
  // => Kxr9tQED9H44gCmp6HAdmemAzU3n84H3dGkuWTKvE23JgHMW8gct
}

The below examples are implemented as integration tests:

• Generate a random address
• Validating address
• Generate an address from a SHA256 hash
• Import an address via WIF
• Generate a Testnet address
• Generate a Litecoin address
• Generate a native Segwit address
• Create a 1-to-1 Transaction
• Create a 2-to-2 Transaction
• Create an OP_RETURN Transaction
• Create a Transaction with a SegWit P2WPKH input
• Import a BIP32 testnet xpriv and export to WIF
• Export a BIP32 xpriv, then import it
• Export a BIP32 xpub
• Create a BIP32, bitcoin, account 0, external address
• Create a BIP44, bitcoin, account 0, external address
• Use BIP39 to generate BIP32 addresses

TODO

• Generate a SegWit P2SH address
• Generate a SegWit multisig address
• Create a Transaction with a P2SH(multisig) input
• Build a Transaction w/ psbt format
• Add Tapscript / Taproot feature

Running the test suite

pub run test

Complementing Libraries

• BIP39 - Mnemonic generation for deterministic keys
• BIP32 - BIP32
• Base58 Check - Base58 check encoding/decoding

LICENSE MIT