#0
OP_RETURN
0.00000000 BSV
jLÿ metadata, len(outputs) if last_txn else 0, testnet)
send_result=OP_RETURN_sign_send_txn(raw_txn, testnet)
# Check for errors and collect the txid
if 'error' in send_result:
result['error']=send_result['error']
break
result['txids'
https://whatsonchain.com/tx/0c3cf091caccbff6f6cc2c0bbcb324688cc1b5a3e4e7df162a71a812d5dc2bd2