From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Thu, 30 Jul 2026 16:40:55 -0700 Received: from mail-oa1-f61.google.com ([209.85.160.61]) by mail.fairlystable.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94.2) (envelope-from ) id 1wpaMx-0000i8-9Q for bitcoindev@gnusha.org; Thu, 30 Jul 2026 16:40:55 -0700 Received: by mail-oa1-f61.google.com with SMTP id 586e51a60fabf-45822bec43esf170715fac.1 for ; Thu, 30 Jul 2026 16:40:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlegroups.com; s=20251104; t=1785454845; x=1786059645; darn=gnusha.org; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:x-original-sender:content-type :mime-version:subject:message-id:to:from:date:sender:from:to:cc :subject:date:message-id:reply-to:content-type; bh=I9TBlpGXOhJ6CoAQnUUzV0J+Jjxb/EF/d+P7ryZbQ2o=; b=ZfpViogD2sZQzaLRW6yxKzg6Ntz4GNNeL4iabzc1/blnpSU/R9jjfgzpw/Lv0FzFf2 ChCcUY1unNauk1a41zsiCDLRDIVhSwIWnfdYH9ilhqLtXNTXezeLxhLW6D+sRtPdNUdb hgcNkOUv9YozeZprpqASrO01JDsS/QtR46UkTHPq5FZMSVAeIsG3Z6sPW8QYftbxx96F Cvdw76zf5gZGLtJuESI91uLp6F+wN+fDXU58LKxfh/ssdezbhNgTB5+d9PhXSBNQL2qC MiCsQcd4RIw1Vy4KFEya9jm65tJkm3hXsUjR1k2bbC07mxSUTe0KE/t0KA/Dfne6YSoX 2jqw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1785454845; x=1786059645; darn=gnusha.org; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:x-original-sender:content-type :mime-version:subject:message-id:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=I9TBlpGXOhJ6CoAQnUUzV0J+Jjxb/EF/d+P7ryZbQ2o=; b=fN91sky7aA4tsEf2n0m18Gie281zFnt18L0o2m2thtfj1kNKxYMPK8JSVriGqbMgfG 8aVU9jYNmrDY7numdd4BYYyo8GBPLGlMypTrigp8Ia+4lxU9OAh0r5qGfDmNXrdUqUMm NvNdPLk8Kb26jdwG24zdPD6KGnrn95V8SSaYCQCGsX3tM3ZU8Jg1h3ZDrGW+e19OGxUp GSXYtzvCqXbLs2MF2KYniBQ2/W8O+IAXhalR4AgtTz3yCf+cOLgFoENlk0lTi7/6l3qk QVacI8kmFeqtXPpx0P8LuKHWa5HgRiKKvXeDxwOuCcaG4hIgHBMerd05X+gRuwzOBwW8 Ih8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785454845; x=1786059645; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:x-original-sender:content-type :mime-version:subject:message-id:to:from:date:x-beenthere :x-gm-message-state:sender:from:to:cc:subject:date:message-id :reply-to:content-type; bh=I9TBlpGXOhJ6CoAQnUUzV0J+Jjxb/EF/d+P7ryZbQ2o=; b=E85FQLNjIB00hDhd3hioaAabWUw9K1yZvs5hT2uzeeVW1mvGiZSAU+5nhBLLKVYAjN 64kNJhx74CvpGPYibaqfGrA4eRLtrZhr/f6RxaVuEK4u2T5X8JSxoTmbRsOBsL/L/F/G sQfXF7IAD0wqMGmTAbKg9h8KLkX1avodDCH/oaWJLHeQTaGHzcZ89daFiR1vdm2OSv+v HOBSlQ7G4qVWNr9nXAWRx7xZWF9i2oim/iqLh2WuHRj4giX0yHsSRkedTcVSGzN1CcYe 7sf7HtTBjvuWpldOPhDDFzPM7XnMC9SYrouoWDnPIE9VOTbMItmES98K3ChzVqcZY2V2 GyzQ== Sender: bitcoindev@googlegroups.com X-Forwarded-Encrypted: i=1; AHgh+RpqrUqCr8iDIpDma81m4AkBIGb6kJdqaPvzCMzteySy5DS9qCyLM7LPp9yIw/hCKYzBL8vuVH/Wm4e8@gnusha.org X-Gm-Message-State: AOJu0YwlRAUI6NnntpFKBwM+4ADk1s03rnFQMoezacm8bh5juCkoX/xB ckslDdD4I50vt5lZRbQ1qUYs6zP+k0J0ZQpL0qpy5Ir9wJzT/fHl942X X-Received: by 2002:a05:6870:a0b1:b0:448:aa9e:b051 with SMTP id 586e51a60fabf-458db495c76mr1941952fac.14.1785454845105; Thu, 30 Jul 2026 16:40:45 -0700 (PDT) X-BeenThere: bitcoindev@googlegroups.com; h="Aa7YSPT8nhWZda8jsav4WLwcJ5Y7Vo6V82FR3GJUhIqXboRM5A==" Received: by 2002:a05:6871:5b2a:b0:441:4757:d51e with SMTP id 586e51a60fabf-458b8b63505ls796293fac.0.-pod-prod-02-us; Thu, 30 Jul 2026 16:40:37 -0700 (PDT) X-Received: by 2002:a05:6808:1526:b0:497:c1f1:1511 with SMTP id 5614622812f47-4ad8778c270mr3487281b6e.16.1785454837719; Thu, 30 Jul 2026 16:40:37 -0700 (PDT) Received: by 2002:a05:690c:610b:b0:81e:11b4:1172 with SMTP id 00721157ae682-81fc4a84b17ms7b3; Thu, 30 Jul 2026 16:00:14 -0700 (PDT) X-Received: by 2002:a05:690c:498d:b0:81e:69c7:3536 with SMTP id 00721157ae682-81fb8a39731mr33270217b3.46.1785452413557; Thu, 30 Jul 2026 16:00:13 -0700 (PDT) Date: Thu, 30 Jul 2026 16:00:13 -0700 (PDT) From: Shannon Appelcline To: Bitcoin Development Mailing List Message-Id: Subject: =?UTF-8?Q?=5Bbitcoindev=5D_Bitcoin_Resilience_Presentations_=E2=80=94_Au?= =?UTF-8?Q?gust_5?= MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_977588_1864324332.1785452413149" X-Original-Sender: Shannon.Appelcline@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_977588_1864324332.1785452413149 Content-Type: multipart/alternative; boundary="----=_Part_977589_832654249.1785452413149" ------=_Part_977589_832654249.1785452413149 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Next Wednesday, August 5th at 10am PT, Blockchain Commons will host a=20 Bitcoin-focused Gordian Developers Meeting about improving the protection= =20 of your secrets. The general goal is to demonstrate how you can ensure the resilience of=20 your Bitcoin Core=E2=80=93stored assets by integrating Bitcoin Core into th= e wider=20 Bitcoin ecosystem.=20 We will demonstrate how to: * Export descriptors from Bitcoin Core. * Export extended private keys from Bitcoin Core. * Use Shamir's Secret Sharing & metadata to store & protect that exported= =20 data. Also: * Create a BIP-39 secret remotely. * Shard that secret. * Import descriptors derived from the BIP-39 secret into Bitcoin Core. Finally: * Exchange QRs for all of the above (and more) securely on the internet This will be done through two presentations: "Sharding Secrets to Protect= =20 Your Bitcoin" and "Using Keylay to Securely Exchange Airgapped QRs". We=20 think they'll both be of interest to the Bitcoin community & we invite you= =20 to attend! WHAT? Securing Your Bitcoin with Entropy, Seeds, Shards, Airgaps, and More WHEN? August 5th, 10am PT WHERE?=20 https://us02web.zoom.us/j/88143195571?pwd=3DrgVeDCgOKT3IMtBiISego4p5wK0s6F.= 1 Shannon Appelcline (that's me!), Lead Author of Learning Bitcoin from the= =20 Command Line, will present on *"Sharding Secrets to Protect Your Bitcoin"*.= =20 Currently, Bitcoin Core doesn't support a number of notable resilience=20 features such as BIP-39 entropy or mnemonics, seed import, or Shamir's=20 Secret Sharing. This presentation will talk about the difference between=20 BIP-32 and BIP-39 before demonstrating how to make use of all of these=20 features while working with Bitcoin Core, either by importing an=20 entropy-based descriptor into Bitcoin Core or exporting a master extended= =20 key from it. It'll also offer additional best practices on using metadata= =20 to ensure that you know what a secret is at some far future date when you= =20 recover it. Stan Reeves, Professor Emeritus of ECE, Auburn University, will present on= =20 *Keylay*. BIP-129 standardized the multisig setup file format, but nothing= =20 standardizes how remote participants exchange it. In practice, xpubs,=20 descriptors, and PSBTs move over email, messaging apps, or centralized=20 coordinators, breaking air gaps and leaking metadata. Thie presentation=20 will demonstrate a session-layer design for remote multisig coordination:= =20 ephemeral X25519 pairwise sessions with no accounts or persistent identity,= =20 a relay treated as adversarial (ciphertext only), air-gap bridging via=20 BC-UR/BBQr animated QR, and pluggable transport targeting Nostr (websocket= =20 now, Nostr proposed).=20 Shannon Lead Tech Writer Blockchain Commons --=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/= c02e2f36-0e87-4968-8700-6b5a648a9397n%40googlegroups.com. ------=_Part_977589_832654249.1785452413149 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Next Wednesday, August 5th at 10am PT, Blockchain Commons will host a Bitco= in-focused Gordian Developers Meeting about improving the protection of you= r secrets.

The general goal is to demonstrate how you can ensure= the resilience of your Bitcoin Core=E2=80=93stored assets by integrating B= itcoin Core into the wider Bitcoin ecosystem.

We will demonstra= te how to:
* Export descriptors from Bitcoin Core.
* Export exten= ded private keys from Bitcoin Core.
* Use Shamir's Secret Sharing &= ; metadata to store & protect that exported data.

Also:
* Create a BIP-39 secret remotely.
* Shard that secret.
* Import= descriptors derived from the BIP-39 secret into Bitcoin Core.

F= inally:
* Exchange QRs for all of the above (and more) securely on the= internet

This will be done through two presentations: "Sharding= Secrets to Protect Your Bitcoin" and "Using Keylay to Securely Exchange Ai= rgapped QRs". We think they'll both be of interest to the Bitcoin community= & we invite you to attend!

WHAT? Securing Your Bitcoin with= Entropy, Seeds, Shards, Airgaps, and More

WHEN? August 5th, 10a= m PT

WHERE? https://us02web.zoom.us/j/88143195571?pwd=3DrgVeDCgO= KT3IMtBiISego4p5wK0s6F.1

Shannon Appelcline (that's me!), Lead A= uthor of Learning Bitcoin from the Command Line, will present on "Shardi= ng Secrets to Protect Your Bitcoin". Currently, Bitcoin Core doesn't su= pport a number of notable resilience features such as BIP-39 entropy or mne= monics, seed import, or Shamir's Secret Sharing. This presentation will tal= k about the difference between BIP-32 and BIP-39 before demonstrating how t= o make use of all of these features while working with Bitcoin Core, either= by importing an entropy-based descriptor into Bitcoin Core or exporting a = master extended key from it. It'll also offer additional best practices on = using metadata to ensure that you know what a secret is at some far future = date when you recover it.

Stan Reeves, Professor Emeritus of ECE= , Auburn University, will present on Keylay. BIP-129 standardized th= e multisig setup file format, but nothing standardizes how remote participa= nts exchange it. In practice, xpubs, descriptors, and PSBTs move over email= , messaging apps, or centralized coordinators, breaking air gaps and leakin= g metadata. Thie presentation will demonstrate a session-layer design for r= emote multisig coordination: ephemeral X25519 pairwise sessions with no acc= ounts or persistent identity, a relay treated as adversarial (ciphertext on= ly), air-gap bridging via BC-UR/BBQr animated QR, and pluggable transport t= argeting Nostr (websocket now, Nostr proposed).=C2=A0

= Shannon
Lead Tech Writer
Blockchain Commons

--
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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/c02e2f36-0e87-4968-8700-6b5a648a9397n%40googlegroups.com.
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