It looks like Sol Noctis took a private key in hex format and converted it to base58 without any of the necessary preprocessing to generate a WIF-encoded key. The 0x80 mainnet flag is not prepended, nor is the 0x01 flag to denote a compressed public key appended. Lastly the checksum is missing.
Some quick/dirty code follows to generate a proper WIF-encoded key from what you received:
Code:
const crypto = require('crypto');
const bs58 = require('bs58');
let sha256 = crypto.createHash('sha256');
let privkey = bs58.decode('EdLEZieDbChBMHJp858568iYuhcKWQNBWbBKeQMuckc9').toString('hex');
console.log(privkey);
privkey = '80' + privkey + '01';
console.log(privkey);
let hash = sha256.update(Buffer.from(privkey, 'hex')).digest('hex');
console.log(hash);
sha256 = crypto.createHash('sha256');
let hash2 = sha256.update(Buffer.from(hash, 'hex')).digest('hex');
console.log(hash2);
let checksum = hash2.slice(0, 8);
console.log(checksum);
privkey += checksum;
console.log(privkey);
let encoded = bs58.encode(Buffer.from(privkey, 'hex'));
console.log(encoded);
const bs58 = require('bs58');
let sha256 = crypto.createHash('sha256');
let privkey = bs58.decode('EdLEZieDbChBMHJp858568iYuhcKWQNBWbBKeQMuckc9').toString('hex');
console.log(privkey);
privkey = '80' + privkey + '01';
console.log(privkey);
let hash = sha256.update(Buffer.from(privkey, 'hex')).digest('hex');
console.log(hash);
sha256 = crypto.createHash('sha256');
let hash2 = sha256.update(Buffer.from(hash, 'hex')).digest('hex');
console.log(hash2);
let checksum = hash2.slice(0, 8);
console.log(checksum);
privkey += checksum;
console.log(privkey);
let encoded = bs58.encode(Buffer.from(privkey, 'hex'));
console.log(encoded);
I've swept the key, please provide an address to which you'd like to receive your funds.
