this = tx_hash_to_this[tx_hash]
else:
if known_txs is not None:
+ if known_txs[tx_hash]['timestamp'] > desired_timestamp - 30:
+ continue
this_size = bitcoin_data.tx_type.packed_size(known_txs[tx_hash])
if new_transaction_size + this_size > 50000: # only allow 50 kB of new txns/share
break