In fact, the Atomicals protocol has a "candidate mechanism", and this situation does exist as mentioned by this old brother, but it does not mean that gas fees can be completely eliminated.

This mechanism is triggered if and only when multiple people mint the same NFT in a short period of time. Here's how I understand it, and it should be pretty much the same.

After a mint transaction enters the mempool, as long as you are the first to submit a mint and can produce a block in the next three blocks, then the NFT still belongs to you.

In simple terms, it can be understood as countdown protection for three blocks.

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For example, if you submit a mint transaction at 50 sat/vB (which has been on-chain and into the mempool), the on-chain process (Commit tx is included in any block) determines that you are a candidate.

I pulled the gas 60 sat/vB mint of the same NFT immediately after your transaction, and the next block was more than 55, and yours didn't produce the block in time, so I produced the block first.

At this time, I can't be sure who this NFT belongs to, and the thing I got from the block belongs to a request state.

In the next half hour, you will have a Reveal in the next three blocks, and you will be successfully protected by this mechanism - the NFT belongs to you, and the one I preempted does not count. But if your gas fee is too low and you can't get out of the three blocks, then this NFT still belongs to me (the second candidate).