What Joe can do about it? Well, what do you think
User Joe have only two options:
- Contact some miner like Viabtc or any other and ask them to mine a private transaction, without broadcasting it before the block is mined. (Hopefully the miner doesn't know about the puzzle), you can agree with them to give 5% or some other fixed amount, directly to their wallets if they mine the block.
- Joe may also have an automated bot ready to listen to new Transactions looking for a FullRBF of your original transaction, in case that some one arrives, you need to replace it again, but that may be a Lost-lost situation, because it may end with all the reward as fee.
Also not always the bigger bid transaction is mined, miners usually don't update their block header as soon a new TX arrive, even less if those replacement comes every 50 milliseconds
So my second options is not the best, i've already seem this behaivor with those leaked private keys, bots exhaust all the balance as fee, and they get only dust, but not always the last bid is mined.
