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[2607:f8b0:4864:20::631]) by gmr-mx.google.com with ESMTPS id 71dfb90a1353d-530e63a9699si371125e0c.3.2025.06.09.07.43.37 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 Jun 2025 07:43:37 -0700 (PDT) Received-SPF: pass (google.com: domain of james.obeirne@gmail.com designates 2607:f8b0:4864:20::631 as permitted sender) client-ip=2607:f8b0:4864:20::631; Received: by mail-pl1-x631.google.com with SMTP id d9443c01a7336-234d3261631so30338935ad.1 for ; Mon, 09 Jun 2025 07:43:37 -0700 (PDT) X-Gm-Gg: ASbGncv9Uffro6qH3CoAhoX9Yj+nbKe98bhkClxxD8PRHobn2ytCjehAvEc/ZiimNIf XwafYE+xRSq5hqcHuzRVnU8gdWR0XBFgW6pvtE0RP5QOPZ9d2u6A9haszDRoWicV9VnZtC/MUa3 ganjcLLlk6uUzLSeDcGpRVqBsyBBwz/nw= X-Received: by 2002:a17:903:986:b0:235:e1e4:ec5e with SMTP id d9443c01a7336-23601debdb1mr197433345ad.49.1749480216701; Mon, 09 Jun 2025 07:43:36 -0700 (PDT) MIME-Version: 1.0 References: <6f78b702-4bd0-4aa4-ac51-b881d8df9f01@mattcorallo.com> In-Reply-To: <6f78b702-4bd0-4aa4-ac51-b881d8df9f01@mattcorallo.com> From: "James O'Beirne" Date: Mon, 9 Jun 2025 10:43:25 -0400 X-Gm-Features: AX0GCFujEKF-XJVusbZ9Lg5ekwEAn_10eh-CmXI9RH9HAqFd985qSpXJ4BlXcpY Message-ID: Subject: Re: [bitcoindev] CTV + CSFS: a letter To: Matt Corallo Cc: Bitcoin Development Mailing List Content-Type: multipart/alternative; boundary="000000000000dbb0fa0637249a8a" X-Original-Sender: james.obeirne@gmail.com X-Original-Authentication-Results: gmr-mx.google.com; dkim=pass header.i=@gmail.com header.s=20230601 header.b=gHZS3+yU; spf=pass (google.com: domain of james.obeirne@gmail.com designates 2607:f8b0:4864:20::631 as permitted sender) smtp.mailfrom=james.obeirne@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 (/) --000000000000dbb0fa0637249a8a Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, Jun 9, 2025 at 9:51=E2=80=AFAM Matt Corallo wrote: > That said, I have yet to see a reasoned explanation of why we should prefer CTV over TXHASH. >From the author of TXHASH himself on Delving Bitcoin ( https://delvingbitcoin.org/t/ctv-csfs-can-we-reach-consensus-on-a-first-ste= p-towards-covenants/1509/15 ): > Having implemented TXHASH, I would definitely not say that > it =E2=80=9Csimplifies the change=E2=80=9D. The difference in both techni= cal debt and > potential for bugs is an order of magnitude bigger for TXHASH than for > CTV. (Not to say that I don=E2=80=99t think TXHASH would be worthwhile, b= ut I > will definitely say that it has not received the attention I had expected, > so I would definitely not want to put it on the table anytime soon.) The use-cases that might merit such a jump up in complexity over CTV have not been enumerated to my knowledge. CTV also includes upgrade hooks to incorporate modifications should these additional uses be more fully understood. Best, James --=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/= CAPfvXf%2Bt33u1ghz39cqYn4k5ErmxTkUv0njF9Zwbz_2UkdTjAg%40mail.gmail.com. --000000000000dbb0fa0637249a8a Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Mon, Jun 9, 2025 at 9:51=E2=80=AFAM Ma= tt Corallo <lf-lists@mattcor= allo.com> wrote:
> That said, I have yet to see = a reasoned explanation of why we should prefer CTV over TXHASH.=C2=A0
=

F= rom the author of TXHASH himself on Delving Bitcoin
(https://delvingbitcoin.org= /t/ctv-csfs-can-we-reach-consensus-on-a-first-step-towards-covenants/1509/1= 5):

= >=C2=A0Having implemented TXHASH, I would definitely not say that=C2=A0<= /div>
> it=20 =E2=80=9Csimplifies the change=E2=80=9D. The difference in both technical d= ebt and=C2=A0
> potential for bugs is an = order of magnitude bigger for TXHASH than for=C2=A0
> CTV. (Not to say that I don=E2=80=99t think TXHASH would be wo= rthwhile, but I=C2=A0
> will definitely s= ay that it has not received the attention I had=20 expected,=C2=A0
> so I would definitely n= ot want to put it on the table anytime=20 soon.)

T= he use-cases that might merit such a jump up in complexity over CTV
have not been enumerated to my knowledge. CTV also = includes=C2=A0
upgrade hooks to incorporate = modifications should these additional
uses b= e more fully understood.

Best,
James

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