@polkadot/util-crypto/address/sshash.js

import { stringToU8a, u8aConcat } from '@polkadot/util';
import { blake2AsU8a } from '../blake2/asU8a.js';
const SS58_PREFIX = stringToU8a('SS58PRE');
export function sshash(key) {
    return blake2AsU8a(u8aConcat(SS58_PREFIX, key), 512);
}