From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Sun, 03 May 2026 09:58:23 -0700 Received: from mail-oa1-f64.google.com ([209.85.160.64]) by mail.fairlystable.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94.2) (envelope-from ) id 1wJa98-0003iX-JZ for bitcoindev@gnusha.org; Sun, 03 May 2026 09:58:23 -0700 Received: by mail-oa1-f64.google.com with SMTP id 586e51a60fabf-43013bffd49sf9602279fac.0 for ; Sun, 03 May 2026 09:58:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlegroups.com; s=20251104; t=1777827496; x=1778432296; 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:references:in-reply-to:message-id:to:from:date:sender:from :to:cc:subject:date:message-id:reply-to; bh=7T3obRU6B3pv2ugV45eIYgMIrxupYXPbkXUQw0ZxOos=; b=GfM663vdA4cBBPpr2SIlPEzdoEoa8muZong831vlWPbpC2BMOWfbmmY0azPnvSp7C3 61fOUW13ktUuY7dFdwhZVfr4SrHPp+GHVnYdIr16WM8CSvvEXaI7UahFT2EiT0tBcGdk ey1QLP2MmOEe0yQzv3l4xzTVxL5KCQwltU/xSRrN4dfsjtOsKtLV5qHZAs7xYXAdUEo1 duk+MagUwCzXYrJUjZKJEGsALYEDxqYFUYrC0W/4+tvyp+8I9hWf90izjVuNOXpPiLV8 Jp2hN0uIUJ+8h9zE1lsnH6aItbvkoVSFtvHrrFfO4ieIIYBOXDdVVOKpcyMOfNgIReXY zfqQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlegroups-com.20251104.gappssmtp.com; s=20251104; t=1777827496; x=1778432296; 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:references:in-reply-to:message-id:to:from:date:from:to:cc :subject:date:message-id:reply-to; bh=7T3obRU6B3pv2ugV45eIYgMIrxupYXPbkXUQw0ZxOos=; b=MWYHofUKHwGKUgryypGrZcsGpawkWvN3sNpGrzaETab1aOiSuycBRBqgjoVdI6eKbx SQDIV2yEbyQN44UGJLgxVFV9TWusc3GFKqIiMI06xEy4TA84ay5WpgbKe27mBllwES3G ubgognMy93ybEieYSiM43oDd7mm6T41DGTQWdkY9YWwhT2pHBqDMtr8nYkbecEOp2Rvg xRn2uqUFOLyP8yOqNM8KxbcvdsvYHp3mGlVjElmqQmHvACL9h5rVfCx6MR80YISEJFW+ 936m/2kFKGp4kmtPbGNlEbXJi0IxXGwP8fGu6Af0kg3gDWRDh/b1xvyu/cqIIfwkQMm5 lQtQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777827496; x=1778432296; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:x-original-sender:mime-version :subject:references:in-reply-to:message-id:to:from:date:x-beenthere :x-gm-message-state:sender:from:to:cc:subject:date:message-id :reply-to; bh=7T3obRU6B3pv2ugV45eIYgMIrxupYXPbkXUQw0ZxOos=; b=flHOlSSFON3A+wlpRQq+UwrsidkRky6RhBVPz2BPwN9sMopTgnmCHPA7ibGKOiuKbG 9BXpubZf6/4w2LRbAh5W7zcq9ameN3NUCTGRgpHrIEMYVr18jmQHvEkccw86rh6TgBJ9 QVuqQKLFOgXs2QBpA77UWygLomux8EIoOHBAJEELumKyAtnrvn8B1pUYVeOYCHweSIZN AfFbcd/qMJJqvZroEuR4VEKEd9Db3y1e4CXxKROW02iBh9HHQCjn3wrnC8HbqBqAfPkC Iv6gipj4Tlf3ZDQ24smqPrMcfSRnmnudkIJ8uQadEkZhNGUcRkP/xzanwW2MQqxxLwH8 sbEw== Sender: bitcoindev@googlegroups.com X-Forwarded-Encrypted: i=1; AFNElJ/l8cccsMYc3t90pEiSzPv0QNikcJb3EtNau1asdUdH1Gl7q6PN5A8hR4Ov3z7cLYf+8R0sfxmNq3X0@gnusha.org X-Gm-Message-State: AOJu0YyntfqMnwGm9/1HXwpZMk/mFxcGQ14RhvIPMadwXtTLUOPMwAtJ WFqPNTkWwZVxW5utLsvicX4l7dHZjM5P5L4wEt5Vr755hPn+5kowaBWR X-Received: by 2002:a05:6820:4b13:b0:694:8b8a:b43d with SMTP id 006d021491bc7-69696be327dmr3125226eaf.29.1777827496076; Sun, 03 May 2026 09:58:16 -0700 (PDT) X-BeenThere: bitcoindev@googlegroups.com; h="AUV6zMNRh8bYYi8u8vHpR/V1Dwb8SIIZ3THQQOG0pdlppCitUg==" Received: by 2002:a05:6820:826:b0:696:6db8:d1af with SMTP id 006d021491bc7-696790ee9f2ls2685219eaf.1.-pod-prod-09-us; Sun, 03 May 2026 09:58:10 -0700 (PDT) X-Received: by 2002:a05:6808:1688:b0:479:f0a2:d213 with SMTP id 5614622812f47-47c89016123mr3423232b6e.13.1777827489944; Sun, 03 May 2026 09:58:09 -0700 (PDT) Received: by 2002:a05:690c:4dc5:10b0:7ba:f1b3:9504 with SMTP id 00721157ae682-7bd768772bams7b3; Sun, 3 May 2026 09:56:40 -0700 (PDT) X-Received: by 2002:a05:690c:34c9:b0:7bd:8d1e:39fb with SMTP id 00721157ae682-7bd8d1e3a1fmr14056857b3.7.1777827399585; Sun, 03 May 2026 09:56:39 -0700 (PDT) Date: Sun, 3 May 2026 09:56:39 -0700 (PDT) From: Tom Harding To: Bitcoin Development Mailing List Message-Id: <0aadce7a-b08b-4fd2-8bae-37df1cfc54afn@googlegroups.com> In-Reply-To: References: Subject: [bitcoindev] Re: Fly Client Proposal MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_134070_2057034930.1777827399113" X-Original-Sender: tomh@thinlink.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: -0.7 (/) ------=_Part_134070_2057034930.1777827399113 Content-Type: multipart/alternative; boundary="----=_Part_134071_1364009242.1777827399113" ------=_Part_134071_1364009242.1777827399113 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable In the linked presentation by Benedict B=C3=BCnz, it's worth listening to t= he=20 first audience question/answer. Questioner is spot on that an SPV client= =20 polling the network to gain probabilistic confidence of unspentness could= =20 easily subsume the task of gaining input inclusion proofs from the network,= =20 with no forking change necessary. On Wednesday, April 29, 2026 at 2:03:36=E2=80=AFPM UTC-7 Zac Mitton wrote: > Hi, Ive been looking into FlyClient first described here=20 > . I don't see an= y=20 > 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= =20 > heaviest chain with a single ~100KB proof. > > It can theoretically be done as a soft-fork by injecting a single hash=20 > into the coinbase tx (similar to how segwit is committed to).=20 > > What do you guy's think? > --=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/= 0aadce7a-b08b-4fd2-8bae-37df1cfc54afn%40googlegroups.com. ------=_Part_134071_1364009242.1777827399113 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
In the linked presentation by Benedict B=C3=BCnz, it's wort= h listening to the first audience question/answer.=C2=A0 Questioner is spot= on that an SPV client polling the network to gain probabilistic confidence= of unspentness could easily subsume the task of gaining input inclusion pr= oofs from the network, with no forking change necessary.
On We= dnesday, April 29, 2026 at 2:03:36=E2=80=AFPM UTC-7 Zac Mitton wrote:
<= /div>
Hi, Ive been looki= ng into FlyClient first described here. I don't s= ee any BIPs, or previous discussion in this forum about it either.

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

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

--
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To unsubscribe from this group and stop receiving emails from it, send an e= mail to bitcoind= ev+unsubscribe@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/bitcoind= ev/0aadce7a-b08b-4fd2-8bae-37df1cfc54afn%40googlegroups.com.
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