From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 29 Apr 2026 14:03:43 -0700 Received: from mail-oa1-f56.google.com ([209.85.160.56]) by mail.fairlystable.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94.2) (envelope-from ) id 1wIC4M-0004ZD-SY for bitcoindev@gnusha.org; Wed, 29 Apr 2026 14:03:43 -0700 Received: by mail-oa1-f56.google.com with SMTP id 586e51a60fabf-4236c3b8f32sf634669fac.0 for ; Wed, 29 Apr 2026 14:03:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlegroups.com; s=20251104; t=1777496616; x=1778101416; darn=gnusha.org; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:x-original-sender:mime-version :subject:message-id:to:from:date:sender:from:to:cc:subject:date :message-id:reply-to; bh=dlXDYvBH25X/YEXgbimEtoZcD4XzmfYBz/I+z7Xfne8=; b=f9INKZClMGKa++Y3ao9k3iuo1nvsi8ro0KUnsEobJAXxTeZyzqkbXEox4YDeeSudao XXY4V6ZhH1hh8E/hKq4yE1ZjlFT2IJyCCAGuAQPlXrebmYb/Z3+HUzA6b9645Aqq3Obk h3QyeXLmJNm3xzP6SLqK8phP3nBRkSq+qp7/xqeJshGOdr2+M/C7rDDKue1D9nBvvvkJ q/zKdN7tATHkagkVcqFZe0GOil3i6sPERAYQS0AQ91gncDvpZ030XU0PpF9fxJnJ8tYe OJKSlV5lRurCkBU7ASTdbyhFKflq0wvY1ajqJn4XWMNVWhr3D8yGQZwv6b/oz8GsjOMx m14w== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1777496616; x=1778101416; darn=gnusha.org; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:x-original-sender:mime-version :subject:message-id:to:from:date:from:to:cc:subject:date:message-id :reply-to; bh=dlXDYvBH25X/YEXgbimEtoZcD4XzmfYBz/I+z7Xfne8=; b=HgT71oZ4Rf+fmyEh0IFWhl+l0uU5peJVy+3DHJRmaM1JSosWR/iyayNN+3Lmz+t7r3 WtpiK0hlxI75qcilCRPQ2KxNA2pHl1EMwtP7v4R9iF8tCn62D/n7YcGdcygI1ppAvsBx tBF1eAHHa8yue/hB9sUUmCmSKsSfV3V4AAqT6ih3lXGBB9P97h7KGurw3sKIsG0MWKp1 AxKF5sHuWaiLLMs6Jpj5WavYPWXlBKY8/OgAinIwtYcpu0tnqNhUbD3cf+mspdcraWJ+ BCZQ50c790Paewl9xx5PWxhmapjntBdBGCJHEi/afs3PXDkv3xW4/rrj0NnN3FCQdDO7 8CgQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777496616; x=1778101416; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:x-original-sender:mime-version :subject:message-id:to:from:date:x-beenthere:x-gm-message-state :sender:from:to:cc:subject:date:message-id:reply-to; bh=dlXDYvBH25X/YEXgbimEtoZcD4XzmfYBz/I+z7Xfne8=; b=SA7UDMzcmkI3Kg6bkeY2mHIkA/du38MRwTJg8B791XaO/ApFIAz1Pegt5HIgqkvE+h vHyTdCd96Gh0HUrtJGrTSMYI9bYGExj5KPLojrH18LcefFU7qq5zX9YlWlA7fm4kxq2l xgiFKwh3g2mByKiU/iTEtbpFqhl+lpV1be/7Ek7hlJ4gYx0WQl+yOLB4eTPsPyrOVznW S/FE1oMx8EvZQYFHs5UqfD9unHyTJp8khUjw5ljS4RxmtwUYymJ+xGhCB5YkKYJaTX9R KrubQZX7bf6eRIuwRU9OTmJRPgz5+syrjuxR8J52V3XIypkWtKNctBHSmoILl/stn1GC qgeg== Sender: bitcoindev@googlegroups.com X-Forwarded-Encrypted: i=1; AFNElJ9AynRY0beTEg9mRdasTkmIKQLgCQg7AY7IJK0N1ML85WHcEhc38NuvEQEFpsBt6JLvWK/w49MNJvhY@gnusha.org X-Gm-Message-State: AOJu0YzuVrykTFCyOouVpIbJif+sBLLRgiWaApBT3Jx0pbDxcz9ibhdX 26f80UZQhAJfusMyS6oMAIfDuiFJHo8dvurpC0DxvKY48gCt+H7csW7P X-Received: by 2002:a05:6870:808f:b0:41c:6bae:2307 with SMTP id 586e51a60fabf-4340dcb2acfmr2268076fac.12.1777496616367; Wed, 29 Apr 2026 14:03:36 -0700 (PDT) X-BeenThere: bitcoindev@googlegroups.com; h="AUV6zMOLO9vqcf1xTPt1yTOhaUyOAY2/T6r9smEDJiUSoC07Xg==" Received: by 2002:a05:687c:410:b0:41c:583a:b50 with SMTP id 586e51a60fabf-434300a2a9als69308fac.1.-pod-prod-04-us; Wed, 29 Apr 2026 14:03:31 -0700 (PDT) X-Received: by 2002:a05:6808:508e:b0:467:268d:31d4 with SMTP id 5614622812f47-47c5fbcc575mr268482b6e.20.1777496611283; Wed, 29 Apr 2026 14:03:31 -0700 (PDT) Received: by 2002:a05:690c:23c8:b0:7ba:f1b3:9504 with SMTP id 00721157ae682-7baf1b3bccams7b3; Wed, 29 Apr 2026 14:00:34 -0700 (PDT) X-Received: by 2002:a05:690c:6201:b0:79a:b46c:e60a with SMTP id 00721157ae682-7bd52a6727amr4336277b3.44.1777496433262; Wed, 29 Apr 2026 14:00:33 -0700 (PDT) Date: Wed, 29 Apr 2026 14:00:32 -0700 (PDT) From: Zac Mitton To: Bitcoin Development Mailing List Message-Id: Subject: [bitcoindev] Fly Client Proposal MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_456954_361784215.1777496432768" X-Original-Sender: zacmitton22@gmail.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 (/) ------=_Part_456954_361784215.1777496432768 Content-Type: multipart/alternative; boundary="----=_Part_456955_733452820.1777496432768" ------=_Part_456955_733452820.1777496432768 Content-Type: text/plain; charset="UTF-8" Hi, Ive been looking into FlyClient first described here . I don't see any BIPs, or previous discussion in this forum about it either. On bitcoin It could allow a light-client to verify the entire work of the heaviest chain with a single ~100KB proof. It can theoretically be done as a soft-fork by injecting a single hash into the coinbase tx (similar to how segwit is committed to). What do you guy's think? -- 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/edb5d954-37f6-4b57-a3ce-70d92d6a9407n%40googlegroups.com. ------=_Part_456955_733452820.1777496432768 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi, Ive been looking into FlyClient first described here. I don't see any = BIPs, or previous discussion in this forum about it either.

On bitcoin It could allow a light-client to verify the entire work of= the heaviest chain with a single ~100KB proof.

= It can theoretically be done as a soft-fork by injecting a single hash into= the coinbase tx (similar to how segwit is committed to).=C2=A0
<= br />
What do you guy's think?

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