import hashlib


def salted_hash_userid(user_id: int):
    SALT = b"Lt2N5xgjJOqRsT5qVt7wWYw6SqOPZDI7"

    hash_uid = hashlib.sha256(f"{user_id}".encode("utf-8") + SALT)
    return hash_uid.hexdigest()[:16]