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Date: Fri, 28 Mar 2025 16:00:40 -0400
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Subject: Re: [bitcoindev] Against Allowing Quantum Recovery of Bitcoin
To: Sjors Provoost <sjors@sprovoost.nl>,
Bitcoin Development Mailing List <bitcoindev@googlegroups.com>
Cc: Jameson Lopp <jameson.lopp@gmail.com>
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On 3/25/25 4:16 AM, Sjors Provoost wrote:
> Matt Corallo wrote:
>=20
>>> In that scenario you'd need to use a NUMS point for the key path. Or ma=
ybe that's unsafe, in which case we'd need a new Taproot version without ke=
y path support (or BIP360). That's also not a difficult soft fork, but now =
again you have something that only a small set of users will want to use.
>>>>
>>>>
>> A NUMS point does not suffice unless we explicitly soft-fork out spendin=
g from that NUMS point (which is, of course, doable).
>=20
> This could be a solution to the sequencing conundrum that I tried to expl=
ain.
>=20
> Along with the first PCQ scheme for tapscript (script path), we could hav=
e a soft that disables one or more NUMS points. The latter has zero effect =
under the current cryptographic assumptions, so it's not confiscatory.
>=20
> That way people can start using the scheme without having to worry about =
whether the community decides to freeze key path spending in time. They'll =
still worry about the market value of their coins, but not about whether th=
ey're going to be the first victim (or the umpteenth victim while everyone =
is in denial and blames them for poor key management).
Mmm, yea, fair enough, that seems perfectly reasonable to include.
Matt
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