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[103.168.172.145]) by gmr-mx.google.com with ESMTPS id af79cd13be357-7cfc5d6cb4bsi2711685a.7.2025.05.28.00.46.56 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 May 2025 00:46:56 -0700 (PDT) Received-SPF: pass (google.com: domain of sjors@sprovoost.nl designates 103.168.172.145 as permitted sender) client-ip=103.168.172.145; Received: from phl-compute-09.internal (phl-compute-09.phl.internal [10.202.2.49]) by mailfout.phl.internal (Postfix) with ESMTP id 79FB3138253C; Wed, 28 May 2025 03:46:56 -0400 (EDT) Received: from phl-mailfrontend-01 ([10.202.2.162]) by phl-compute-09.internal (MEProxy); Wed, 28 May 2025 03:46:56 -0400 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtddtgddvvdeileculddtuddrgeefvddrtd dtmdcutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpggft fghnshhusghstghrihgsvgdpuffrtefokffrpgfnqfghnecuuegrihhlohhuthemuceftd dtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenogfuuhhsphgvtghtffhomhgr ihhnucdlgeelmdenucfjughrpefhkfgtggfuffgjvefvfhfosegrtdhmrehhtdejnecuhf hrohhmpefujhhorhhsucfrrhhovhhoohhsthcuoehsjhhorhhssehsphhrohhvohhoshht rdhnlheqnecuggftrfgrthhtvghrnheptddvvdegveduiedtgeelueelffdthfegkeefue ffieduhfekffetudelgeetveffnecuffhomhgrihhnpehgohhoghhlvgdrtghomhenucev lhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehsjhhorhhsse hsphhrohhvohhoshhtrdhnlhdpnhgspghrtghpthhtohepvddpmhhouggvpehsmhhtphho uhhtpdhrtghpthhtohepsghithgtohhinhguvghvsehgohhoghhlvghgrhhouhhpshdrtg homhdprhgtphhtthhopegvkhgrghhgrghtrgesghhmrghilhdrtghomh X-ME-Proxy: Feedback-ID: ie5e042df:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 28 May 2025 03:46:55 -0400 (EDT) From: Sjors Provoost Message-Id: <7E385C29-F84D-45E1-8314-D735929F9DC1@sprovoost.nl> Content-Type: multipart/alternative; boundary="Apple-Mail=_80E6C95E-B7A2-43A1-A0A1-9EC93DD884B0" Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3826.600.51.1.1\)) Subject: Re: [bitcoindev] Against Allowing Quantum Recovery of Bitcoin Date: Wed, 28 May 2025 09:46:40 +0200 In-Reply-To: Cc: waxwing/ AdamISZ To: Bitcoin Development Mailing List References: X-Mailer: Apple Mail (2.3826.600.51.1.1) X-Original-Sender: sjors@sprovoost.nl X-Original-Authentication-Results: gmr-mx.google.com; dkim=pass header.i=@sprovoost.nl header.s=fm2 header.b=QASKPbcD; dkim=pass header.i=@messagingengine.com header.s=fm1 header.b=LGmvZ7Ph; spf=pass (google.com: domain of sjors@sprovoost.nl designates 103.168.172.145 as permitted sender) smtp.mailfrom=sjors@sprovoost.nl; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=sprovoost.nl Precedence: list Mailing-list: list bitcoindev@googlegroups.com; contact bitcoindev+owners@googlegroups.com List-ID: X-Google-Group-Id: 786775582512 List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , X-Spam-Score: -0.7 (/) --Apple-Mail=_80E6C95E-B7A2-43A1-A0A1-9EC93DD884B0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" > Op 28 mei 2025, om 03:07 heeft waxwing/ AdamISZ het = volgende geschreven: >=20 > Hi all, >=20 > I'd like to point out that the worst case scenarios here might be even wo= rse than one naturally thinks. Good morning! :-) > Two more observations: >=20 > (3) I do really like the "disabled NUMS" concept in regard to taproot ext= ernal keys, for paving the way to PQC in tapleaf. This is one kind of censo= rship that cannot be controversial. I brought this up [0], but it was later pointed out to me that it doesn't w= ork. The scriptPubKey that you see on chain is not the NUMS point itself. The in= ternal key is a NUMS point, but it's tweaked. When this tweaked key is spen= t, the tweak itself is not revealed, so the blockchain can't tell if a NUMS= was involved, and can't block the spend. - Sjors https://groups.google.com/g/bitcoindev/c/uUK6py0Yjq0/m/bQk2v0E5BQAJ --=20 You received this message because you are subscribed to the Google Groups "= Bitcoin Development Mailing List" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to bitcoindev+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/bitcoindev/= 7E385C29-F84D-45E1-8314-D735929F9DC1%40sprovoost.nl. --Apple-Mail=_80E6C95E-B7A2-43A1-A0A1-9EC93DD884B0 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="UTF-8"

Op 28 mei 2025, om 03:07= heeft waxwing/ AdamISZ <ekaggata@gmail.com> het volgende geschreven:=

=
Hi all,

=
I'd like to point out that the worst case scenari= os here might be even worse than one naturally thinks.

Good morning! :-)

Two more observations:

(3) I do really = like the "disabled NUMS" concept in regard to taproot external keys, for pa= ving the way to PQC in tapleaf. This is one kind of censorship that cannot = be controversial.

I brought thi= s up [0], but it was later pointed out to me that it doesn't work.

The scriptPubKey that you see on chain is not the NUMS poi= nt itself. The internal key is a NUMS point, but it's tweaked. When this tw= eaked key is spent, the tweak itself is not revealed, so the blockchain can= 't tell if a NUMS was involved, and can't block the spend.

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