Quote from: albert0bsd on Today at 03:26:43 AM

Quote from: k3ntINA on Today at 12:38:19 AM

Alberto, you did not broadcast the transaction in Mempool. Can you explain to us what you did? Although your transaction was sent later on the main network (not through Mempool), it was confirmed.

What are you talking about? All TX pass thought mempool (Unless you mine the block)

What I did

1.- retrieve the public key from the mempool transaction (https://mempool.space/docs/api/rest#get-address-transactions-mempool)
2.- get the privatekey with keyhunt (bsgsd daemon https://github.com/albertobsd/keyhunt/blob/main/BSGSD.md )
3.- create a new TX with the UTXO (https://bitcoinlib.readthedocs.io/en/latest/ https://github.com/1200wd/bitcoinlib/blob/master/examples/transactions.py )
4.- broadcast the TX withthe mempool.space API ( https://mempool.space/docs/api/rest#post-transaction )

All previous point were full automated with python

Some considerations:
2.- I scan from 0x1 to 0x3ffffffffffffffff to avoid previous mistakes of private keys in lower ranges, so It took me twice the amount of time needed to crack the privatekey (It was less than a minute)

4.- I should add some other API provider to broadcast transactions just to add redundancy

The code for broadcast in python using requests

Code:

#Current function
def broadcast_transaction(raw_tx):
   try:
   url = ""
   if networkname=="bitcoin":
   url = "https://mempool.space/api/tx"
   elif networkname=="testnet":
   url = "https://mempool.space/testnet/api/tx"
   else:
   print("Unknow network")
   exit()
   response = requests.post(url, data=raw_tx)
   return response.text
   except requests.exceptions.RequestException as e:
   print(f"error {str(e)}")
   return ""

#Next is just an example, not the actual code.

networkname= 'bitcoin'
RAWTX = "010000000120e57c9717271536b9623703c14ed29b40c98c3c28f2667935f3d63897fae33e000000006a473044022068357d38b55b987e139ce069de456cb399b04f37861879bb7e425ef84b11816a0220425c3fb1c6fa90ca1d7ab6971375a94d62e36a49041d7cfda338d51f4169a08e0121029fd3d2479a37f40d03975cb51ce0fa18cbb709cc46b47caeaa1722cfd3683583ffffffff011821070000000000160014c0f3278346024832e71d25a24d5ae4b73885f85d00000000"
value = broadcast_transaction(RAWTX)
#Need to evaluate value to check if the TX was successful or not

Alberto, there is a tool on the Binance website that allows you to pay a higher fee and have the transaction mined quickly, doing this transaction through Binance runs the risk of losing the BTC too, or it's the same, regardless of the place, it would only be safe directly with a miner?