Get the list of virtualchain transactions accepted at a given block.
        Returns the list of rows, where each row is a dict.

def db_chainstate_get_block(cls, cur, block_height):
        """
        Get the list of virtualchain transactions accepted at a given block.
        Returns the list of rows, where each row is a dict.
        """
        query = 'SELECT * FROM chainstate WHERE block_id = ? ORDER BY vtxindex;'
        args = (block_height,)

        rows = cls.db_query_execute(cur, query, args, verbose=False)
        ret = []

        for r in rows:
            rowdata = {
                'txid': str(r['txid']),
                'block_id': r['block_id'],
                'txindex': r['txindex'],
                'vtxindex': r['vtxindex'],
                'opcode': str(r['opcode']),
                'data_hex': str(r['data_hex']),
                'senders': simplejson.loads(r['senders']),
                'tx_hex': str(r['tx_hex']),
                'tx_merkle_path': str(r['tx_merkle_path']),
                'fee': r['fee']
            }

            ret.append(rowdata)

        return ret