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 Š”ryptocurrency exchanges => Binance - Š”ryptocurrency exchanges => Topic started by: Bitcoin on Feb 19, 2022, 06:11 am

Title: Taproot, potential quantum bug, and general clarification
Post by: Bitcoin on Feb 19, 2022, 06:11 am
Taproot, potential quantum bug, and general clarification

Here seeking information. I have 2 questions marked with parens


Would like some clarification pertaining to the Mark Friedenbach article:



The point of contention with Mark seems to be with the space savings for the N-N Musig2 everyone signs/happy path, being embedded into the the root of the MAST/Taproot, thus exposing a pubkey in an output that sits on the blockchain.


(1) please correct if I'm wrong about the way I'm describing this.


I did see Pieter's presentation at Bitdevs from a while back reference, "plain pubkey security model in mind" for taproot. But, it wasn't apparent that this would hypothetically make it quantum vulnerable,.. as Mark's article says, "a naked secp256k1 pubkey on chain at the time the output is created which has absolute spend authority for the underlying bitcoins".


(2) Would love for someone to rebut or verify this claim.


Source: Taproot, potential quantum bug, and general clarification (https://bitcoin.stackexchange.com/questions/106546/taproot-potential-quantum-bug-and-general-clarification)