Is there a bitcoin library or even just pure javascript way of signing and verifying you own a btc address?
1 Answer
bitcoinjs-lib and bitcore-lib are both javascript libraries that allow for key signing.
For example with bitcore-lib:
var Message = require('bitcore-message');
var privateKey = new bitcore.PrivateKey('L23PpjkBQqpAF4vbMHNfTZAb3KFPBSawQ7KinFTzz7dxq6TZX8UA');
var message = new Message('This is an example of a signed message.');
var signature = message.sign(privateKey);
EDIT: To also include the verification example from bitcore's github.
var Message = require('bitcore-message');
var address = '13Js7D3q4KvfSqgKN8LpNq57gcahrVc5JZ';
var signature = 'IBOvIfsAs/da1e36W8kw1cQOPqPVXCW5zJgNQ5kI8m57FycZXdeFmeyoIqJSREzE4W7vfDmdmPk0HokuJPvgPPE=';
var verified = new Message('This is an example of a signed message.').verify(address, signature);
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Here's an example with BitcoinJS in the Blockchain.info wallet: Sign: github.com/blockchain/My-Wallet-V3/blob/master/src/… (ignore the code that refers to
secondPassword
) Verify: github.com/blockchain/My-Wallet-V3/blob/v3.28.6/src/… Mar 29, 2017 at 17:22 -