code: func ComputeMastersFromSeed(seed string) (string, string, string) {
  	key, data := []byte("Bitcoin seed"), []byte(seed)
  	secret, chain := I64(key, data)
  	pubKeyBytes := PubKeyBytesFromPrivKeyBytes(secret, true)
  	return HexEncode(pubKeyBytes), HexEncode(secret), HexEncode(chain)
  }
docs: // ComputeMastersFromSeed returns the master public key, master secret, and chain code in hex.