Converts to pycoin Spendable type
        :param address:
        :return: list of Spendables

def spendables_for_address(self, address):
        """
        Converts to pycoin Spendable type
        :param address:
        :return: list of Spendables
        """
        unspent_outputs = bitcoin.rpc.Proxy().listunspent(addrs=[address])
        logging.debug('spendables_for_address %s', address)

        spendables = []
        for unspent in unspent_outputs:
            coin_value = unspent.get('amount', 0)
            outpoint = unspent.get('outpoint')
            script = unspent.get('scriptPubKey')
            previous_hash = outpoint.hash
            previous_index = outpoint.n
            spendables.append(Spendable(coin_value, script, previous_hash, previous_index))
        return spendables