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I didn't know there was a formal service for it, that's very cool. Still, it relies on the miner keeping its word instead of cracking the private key. In practice it would definitely not bother risking its reputation like that, but I wonder if there's way around it, with smart contracts or something.

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I am not a bitcoiner, but I think there is a way to have transactions on bitcoin that are the hash of the script you want. So maybe you could submit the script hash and then submit the script in the next block? IDK if how that would work but I overheard some sort of hash-of-script functionality described by bitcoiners to save space. Hold on, let me see if I can find it.

Edit: nevermind, I got confused with P2SH: https://learnmeabitcoin.com/technical/script/p2sh/ pretty sure you can't unlock outputs with a hashed script unless the creator of those outputs did it ahead of time.

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