<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def register_piece(self, from_address, to_address, hash, password, min_confirmations=6, sync=False, ownership=True):
 """ Register a piece Args: from_address (Tuple[str]):
 Federation address. All register transactions originate from the the Federation wallet to_address (str):
 Address registering the edition hash (Tuple[str]):
 Hash of the piece. (file_hash, file_hash_metadata) password (str):
 Federation wallet password. For signing the transaction edition_num (int):
 The number of the edition to register. User edition_num=0 to register the master edition min_confirmations (int):
 Override the number of confirmations when chosing the inputs of the transaction. Defaults to 6 sync (bool):
 Perform the transaction in synchronous mode, the call to the function will block until there is at least on confirmation on the blockchain. Defaults to False ownership (bool):
 Check ownsership in the blockchain before pushing the transaction. Defaults to True Returns: str: transaction id """

        file_hash, file_hash_metadata = hash
        path, from_address = from_address
        verb = Spoolverb()
        unsigned_tx = self.simple_spool_transaction(from_address,
                                                    [file_hash, file_hash_metadata, to_address],
                                                    op_return=verb.piece,
                                                    min_confirmations=min_confirmations)

        signed_tx = self._t.sign_transaction(unsigned_tx, password)
        txid = self._t.push(signed_tx)
        return txid