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[2a00:1450:4864:20::52f]) by gmr-mx.google.com with ESMTPS id 2adb3069b0e04-598f2edeb14si131624e87.0.2025.12.12.23.07.43 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 12 Dec 2025 23:07:43 -0800 (PST) Received-SPF: pass (google.com: domain of ataraxia.009.work@gmail.com designates 2a00:1450:4864:20::52f as permitted sender) client-ip=2a00:1450:4864:20::52f; Received: by mail-ed1-x52f.google.com with SMTP id 4fb4d7f45d1cf-64198771a9bso1418211a12.2 for ; Fri, 12 Dec 2025 23:07:43 -0800 (PST) X-Gm-Gg: AY/fxX6wgJy0mi9Wi7gu4fXxHAtjDt76aLc1JFqsfKxXgI6KgM1oMMVDEBCD48QKgzJ SUTLk15bJKncDorM0Gc7l58K/q4gOgPKaAnVCtr+xEYvQrjMzkiVCJYnQtTCeX0DfFTI2XSBHEX ad//FzD0TbfFkFbHrjALazu2SbMN8/xrbl2BqDLqvSNHWqohuhogep1HCF6IzfGJTfrs7csl//v oJBH5xONNRcn/JtzKmsVDutmsDIyUPD4Gh9zdur27UuoAEyecB6I7jU8xARe0U02CkkKhulHNga 6cMBR8On X-Received: by 2002:a17:907:3fa0:b0:b76:339b:d681 with SMTP id a640c23a62f3a-b7d231d6c22mr422718866b.0.1765609662864; Fri, 12 Dec 2025 23:07:42 -0800 (PST) MIME-Version: 1.0 References: <32f8c689-314d-4a5e-9af6-2e3e704582e6n@googlegroups.com> In-Reply-To: From: Ataraxia 009 Date: Sat, 13 Dec 2025 12:37:31 +0530 X-Gm-Features: AQt7F2ooxU6S-jYJUKK3VOSKoLhrorpBrlADBB_n7UHQFK6CXY06c4moedrzczo Message-ID: Subject: Re: [bitcoindev] Re: The Cat, BIP draft discussion. To: bitcoindev@googlegroups.com Content-Type: multipart/alternative; boundary="000000000000c464030645d0080e" X-Original-Sender: ataraxia.009.work@gmail.com X-Original-Authentication-Results: gmr-mx.google.com; dkim=pass header.i=@gmail.com header.s=20230601 header.b=aoU+Y+JS; spf=pass (google.com: domain of ataraxia.009.work@gmail.com designates 2a00:1450:4864:20::52f as permitted sender) smtp.mailfrom=ataraxia.009.work@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com; dara=pass header.i=@googlegroups.com 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: -0.5 (/) --000000000000c464030645d0080e Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Yes there is no need to add consensus changes to filter out unspendable outputs from the UTXO set, thats just a protocol upgrade. The second point with the Ordinals: Whether it's a transaction validation rule or not, what you're planning to do is differentiate between utxos on a consensus level. Which is the worst path that you could go down. This will break bitcoin more than any spam ever will. On Sat, Dec 13, 2025 at 5:19=E2=80=AFAM Greg Maxwell w= rote: > On Fri, Dec 12, 2025 at 9:26=E2=80=AFPM Jonathan Voss = wrote: > >> Since the Bitcoin Stamps outputs are already unspendable, it makes >> perfect sense to mark and drop them from the UTXO set. > > > There is no consensus change involved in not storing a provably > unspendable output, it's just an implementation detail with no > interoperability implications and doesn't need a BIP. Bitcoin core has > long done so for several types of unspendable outputs, e.g. outputs over > 10kb and ones starting with OP_RETURN. > > -- > 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 > email to bitcoindev+unsubscribe@googlegroups.com. > To view this discussion visit > https://groups.google.com/d/msgid/bitcoindev/CAAS2fgTjF_e5vLEzp672_jmF82j= DUre0wcZKHB5my8kTdFOGgw%40mail.gmail.com > > . > --=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/= CAADX_vKftpgPfr7FgQGsQQ%2B6EtEdsZu-fUOWVq-ZQPoLoP8zkQ%40mail.gmail.com. --000000000000c464030645d0080e Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Yes there is no need to add consensus changes to filter ou= t unspendable outputs from the UTXO set, thats just a protocol upgrade.
=
The second point with the Ordinals:
Whether it's a transaction v= alidation rule or not, what you're planning to do is differentiate betw= een utxos on a consensus level. Which is the worst path that you could go d= own. This will break bitcoin more than any spam ever will.=C2=A0

<= div class=3D"gmail_quote gmail_quote_container">
On Sat, Dec 13, 2025 at 5:19=E2=80=AFAM Greg Maxwell <gmaxwell@gmail.com> wrote:
<= blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-l= eft:1px solid rgb(204,204,204);padding-left:1ex">
On Fri, Dec 12, 2025 at 9:26=E2=80=AFPM Jonathan Voss <k98kurz@gmail.com> w= rote:
Since the Bitcoin Stamps outputs are already unspendable, it m= akes perfect sense to mark and drop them from the UTXO set.

There is no consensus change involved in not storing a pro= vably unspendable output, it's just an implementation detail with no in= teroperability implications and doesn't need a BIP.=C2=A0 Bitcoin core = has long done so for several types of unspendable outputs, e.g. outputs ove= r 10kb and ones starting with OP_RETURN.

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