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That’s exactly how bitcoins works.

As a miner, if I see two conflicting transactions I will prioritize the one which pays more rather than the one I saw first.



So can I avoid the attack by voluntarily paying a super high fee?


The attacker can see what fee you are offering, so they just offer higher


Assuming it’s higher than the bot can post, yes.


Yeah unless the miner favors the other transaction for personal reasons.




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