<style> .reveal { font-size: 24px; } . reveal h1 h2 { font-family: "League Gothic", Impact, sans-serif; color: #eee8d5; font-family: "League Gothic", Impact, sans-serif; line-height: 0.9em; letter-spacing: 0.02em; text-transform: uppercase; text-shadow: none; } .reveal ul { font-size: 5 em ; line-height: 1.2 em ; } .reveal pre code { font-size: 0.7em ; margin: 0px 60px 0px 60px; .reveal p { line-height: 1 em ; } .reveal blockquote { font-size: 1 em ; line-height: 1.2 em ; } </style> <img src="https://www.Blockchaincommons.com/images/bcc-card.jpg" width=1024> <font size="5">Blockchain Commons #Gordian Meeting 2024-07-10</font> --- ## <img src="https://i.imgur.com/QyDl5nK.png" width="192" height="192"></br> What is Blockchain Commons? <font size=6> * We are a community interested in self-sovereign control of digital assets. * We bring together stakeholders to collaboratively develop interoperable infrastructure. * We design decentralized solutions where everyone wins. * We are a neutral "not-for-profit" that enables people to control their own digital destiny. </font> --- Thank you to our Sponsors! <img src="https://hackmd.io/_uploads/ryThJwswC.png" style="border: 1px white solid;"> Become a sponsor! Mail us at team@blockchaincommons.com --- ## <img src="https://i.imgur.com/QyDl5nK.png" width=192 height="192"><br/>Sponsorships * It's been a tough year! We've lost a number of sponsors! * They remain interested in our tech. * But they're having problems with funding. * Become a sponsor, mail us at team@blockchaincommons.com * We can also support your company on specific projects * Open source & related to our specifications * Talk to us! * Thanks to: * HRF for a Recent FROST Grant! * Foundation Devices for recent GSTP Research Funding! --- <font size="5"> <img src="https://i.imgur.com/QyDl5nK.png" width="128" height="128"></br> Thanks also to individual sponsors!  * You help us to go to people like HRF & say we have developer support! * Even $20/month makes a difference! --- ## <img src="https://i.imgur.com/QyDl5nK.png" width=192 height="192"><br/>Subscribe to Our Announcements * https://www.blockchaincommons.com/subscribe/ * Announcements for Gordian Developers, FROST * Announcements-only Mailing List * Signal Discussion Channel * For regular google calendar invite to Gordian meetings: * Request from Christopher * ChristopherA@LifeWithAlacrity.com --- ## <img src="https://i.imgur.com/QyDl5nK.png" width=192 height="192"><br/>Last Meeting <font size=6> - PayJoin Presentation! - SSH-Envelope - The Request/Response Use Case </font> --- ## <img src="https://i.imgur.com/QyDl5nK.png" width=192 height="192"><br/>Today's Topics <font size=6> - Seedtool in Rust - Why SSH? - SSH Envelope-CLI Updates - Gordian Sealed Transaction Protocol (GSTP) </font> --- ## <img src="https://i.imgur.com/QyDl5nK.png" width=192 height="192"><br/>Seedtool-CLI-Rust Release <font size=6> - Seedtool-CLI Is Now Available in Rust - `seedtool-cli-rust` - Updated to Our Newest Specifications - See The New User Manual - What's Next? - Descriptors? Attachments? BIP-85? - We'll have a full presentation on BIP-85 next month! </font> --- ## <img src="https://i.imgur.com/QyDl5nK.png" width=192 height="192"><br/>Why SSH? <font size=6> - We're updating Envelope-CLI for SSH - Traditionally, SSH keys have been used for authentication - But now they can be used for code signing - Git & GitHub are the leaders here - We'd like to see more tools for software supply chain - Offer SSH keys also shows flexibility of Envelope. - Not agility, but flexible. - So here's what we've done ... </font> --- ## <img src="https://i.imgur.com/QyDl5nK.png" width=192 height="192"><br/>Envelope-CLI Updates <font size=6> - `bc-envelope-rust` is now at 0.9.0 - The older `envelope-cli-swift` has been deprecated - diffs & mermaid output not yet ported - New Envelope-Rust Features - `generate signer` has options for deriving SSH keys - `import` & `export` SSH keys - `sign` with SSH keys! - `info` on URs with SSH keys & signatures - Verify SSH signatures! </font> --- ## <img src="https://i.imgur.com/QyDl5nK.png" width=192 height="192"><br/>Envelope-CLI Breaking Changes <font size=6> - `--prvkeys` is now `--signer` - `--pubkeys` is now `--verifier` </font> --- ## <img src="https://i.imgur.com/QyDl5nK.png" width=192 height="192"><br/>Gordian Sealed Transaction Protocol (GSTP) <font size=6> - GSTP is our Envelope Protocol for Secure Transmissions - See BCR-2023-014 - Uses Envelope Request/Response with Encryption - New! Support for Bidirectional Cryptographic Continuation - Preserve the state to pick up operation at a later time - Methodology for doing this now standardized - Our Research Sponsor for this work is FOUNDATION DEVICES - https://foundation.xyz/ - Want to sponsor specific work? Let us know! </font> --- ## <img src="https://i.imgur.com/QyDl5nK.png" width=192 height="192"><br/>Next Month's Meeting! <font size=6> - Back to our Regular First Wednesday Date - Wednesday, August 7 - Planned Topics - A Special Presentation on BIP-85 - More on Using SSH with Envelope --- <img src="https://i.imgur.com/QyDl5nK.png" width="128" height="128"></br> www.BlockchainCommons.com <img src="https://avatars.githubusercontent.com/ChristopherA?s=195"> Christopher Allen (@ChristopherA)