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Blockchain(ブロックチェーン)Advent Calendar 2021

Day 12

Litecoinの鍵をbitcoinjs-libで生成する

Last updated at Posted at 2021-12-13

はじめに

以前、bitcoinjs-libを用いてBitcoin Testnet/Signetの鍵、アドレスを生成してそこに送金し、TX作るというハンズオンをやったのですが、
Litecoin Mainnetの鍵を作ってみましょう。

ニーモニックを生成

使うコードはこちら

node getMnemonic
mnemonic:
bomb strategy round brown bomb solve biology soft second artefact once delay coach slight arch vintage always life toss artwork peasant finish device bamboo

ここに載っているニーモニックは使わないでくださいね。

Litecoinの鍵を生成

getKeys.js
let bitcoinNetwork = TESTNET; // MAINNET, TESTNET, LITECOIN or DOGECOIN

↑この行を以下のように書き換えます。

getKeys.js
let bitcoinNetwork = LITECOIN; 

以下のLITECOINのprefix情報が使われるようになるわけですね。

getKeys.js
const LITECOIN = {
    messagePrefix: '\x19Litecoin Signed Message:\n',
    bech32: 'ltc',
    bip32: {
      public: 0x019da462,
      private: 0x019d9cfe,
    },
    pubKeyHash: 0x30,
    scriptHash: 0x32,
    wif: 0xb0,
};

実行して拡張秘密鍵と拡張公開鍵を生成してみましょう。

node getKeys.js
path:
m/44'/2'/0'
xpub:
Ltub2Yp2889mKTKeuzHyJqgDszUfp8GWyRcYACGp5JhSwhJ92tLpuKuimd44JZ5Brfq4HzeLzdHFHLZJMQTgGxpvzEmBcyCoKuxzkRnfneDrdK6
xpriv:
Ltpv77dgXLjE5JnhJ7b94EBqoQeTNZaKuB3t5gAnQKwA1WWYSX9kaQsHm1wo4CNLNPHyv9vyaAR4CRrWuqUqx3fV9xbuDo9HmLXMLzAF8mGM2eG

Litecoinの拡張公開鍵、拡張秘密鍵の接頭辞は"L"になります。

次回はアドレス生成してみましょう!

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