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Calculate Electrum scripthash from address

See original GitHub issue

How can i get the scripthash from the address ? as in the following example :

{'priv': 'L8g5V8kFFeg2WbecahRSdobARbHz2w2STH9S8ePHVSY4fmia7Rsj',
        'pub': '03e9f948421aaa89415dc5f281a61b60dde12aae3181b3a76cd2d849b164fc6d0b',
        'address': 'bc1qqmpt7u5e9hfznljta5gnvhyvfd2kdd0r90hwue',
        'minikey': False,
        'txin_type': 'p2wpkh',
        'compressed': True,
        'addr_encoding': 'bech32',
        'scripthash': '1929acaaef3a208c715228e9f1ca0318e3a6b9394ab53c8d026137f847ecf97b'}

Sorry to bother you with opening an issue here as a question The original question in stackexchange : ScriptHash from bitcoin address with BitcoinJS

Issue Analytics

State:
Created 6 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

8reactions

youssefghcommented, Jan 18, 2018

Thanks a lot Your example worked with just a small modification:

let script = bitcoin.address.toOutputScript(address)
let hash = bitcoin.crypto.sha256(script)
let reversedHash = new Buffer(hash.reverse())

console.log(address, ' maps to ', reversedHash.toString('hex'))

No idea why Electrum uses the reverse of the hash and not the hash itself Cheers

3reactions

junderwcommented, Jan 19, 2018

endianness and Bitcoin ftw