On 2024-12-16 12:20, Tadge Dryja wrote:
An on-chain proof of quantum computer (PoQC I guess :) ) would be a
way to reduce the damage of activation forks.  One way to build it:
Create a NUMS point pubkey - something like described in BIP341.  Send
some coins to that address, then watch if it gets spent. [...]
Nodes can then have code which
watches for such a proof and changes consensus rules based on it.

I think this could be even more useful if combined with a previous idea far creating a NUMS[1][3] (or trust minimized[2]) pubkey compatible with Bitcoin but with a security strength less than 128 bits. That way someone might claim the bounty of the key with (say) 96 bits security potentially months or years before QC advances made regular keys insecure and tempted operators of QCs into stealing from regular user addresses.

-Dave

[1] https://gnusha.org/pi/bitcoindev/cah5bsr20n2t7krtyqycsux0ieueapc8ngtpcfn8ryhryhle...@mail.gmail.com/ [2] https://gnusha.org/pi/bitcoindev/aRiFFJKz5wyHFDi2dXcGbNEHZD2nIwDRk7gaXIte-N1BoOEOQ-ySYRnk0P70S5igANSr2iqF2ZKV1dWvipaQHK4fJSv9A61-uH7w4pzxKRE=@protonmail.com/ [3] https://gnusha.org/pi/bitcoindev/cah5bsr39kw08ki76aezj1em9e7mdlflumtkwjjnycyumpr_...@mail.gmail.com/

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