Quote from: Pan Troglodytes on December 20, 2017, 12:58:57 PM

Quote from: DannyHamilton on December 18, 2017, 06:12:35 PM

Quote from: zimmix on December 18, 2017, 05:32:29 PM

Still on this subject, if you get to see that your coins were to be moved from your wallet and do a double spent directing all your btc to another wallet you own, but with a high fee in order to have it confirmed next block, for example, would it in practice prevent the theft as it would be confirmed first and the other transaction would be nullified as there would be no source btc for it to complete?

Not with any reliability.

While it is possible that the second transaction with the higher fee might get confirmed first...

Most nodes will refuse to relay a transaction that spends outputs that are already spent in their mempool. Therefore it will be difficult for most miners to even know about the second transaction.

Most miners will refuse to accept a transaction that spends outputs that are already spent in their mempool. Therefore, it will be unlikely that the second transaction will get confirmed even if miners have received it from peers.

OK thanks for that info. So what is your advice if a transaction is stuck in limbo for 1.5 weeks? The fee is 1.5 USD what seemed reasonable at the time when I posted it, but now the recommended transaction fee is 35USD and there are NO chances my transaction gets confirmed EVER.

What would you suggest I do?

Thanks for help

well I would love to know that too, as well as undoubtly there are tons of other ppl who would love that too. Thanks for taking your time and helping out others.