let mnemonic = Mnemonic.create()
// nuclear you cage screen tribe trick limb smart dad voice nut jealous

let seed = Mnemonic.createSeed(mnemonic: mnemonic)
let wallet = HDWallet(seed: seed, network: .main(.bitcoin))

do {
    let privateKey = try wallet.generateExternalPrivateKey(at: 0)
    let publicKey = privateKey.hdPublicKey()
    
} catch let error {
    print("Error: \(error)")
}