def METHOD_NAME(self) -> Dict:
    """
    Return the database arguments for easy insertion in a Pony database.
    :return A dictionary with keyword arguments for database insertion.
    """
    return {
        "sequence_number": self.sequence_number,
        "public_key_a": self.public_key_a,
        "public_key_b": self.public_key_b,
        "signature_a": self.signature_a,
        "signature_b": self.signature_b,
        "amount": self.amount,
        "timestamp": self.timestamp
    }