BitDevs: Learning Bitcoin #9 - multsigbackup.com

Tonight we're learning how Bitcoin works! Atlanta BitDevs meetups are place for free and open Bitcoin education in Atlanta. Discussions will be technical but are open to people of all skill levels. Join the community and #LearnBitcoinTogether!

🎉 Sponsored by C0MPLÉX1 and Delineator

Tonight's Topic
Josh will be presenting his work on MultisigBackup.com, which aims to simplify the process of backing up a 2-of-3 multisig descriptor by encrypting and inscribing it on Bitcoin, so that anyone, including a loved one, can always recover it with only 2 seeds.

Attendees will learn the ins-and-outs of multisig descriptors, including the pitfalls / existing best practices when backing them up. This includes learning about master fingerprints, extended public keys (xpubs), and derivation paths. Attendees will also learn about how data can be inscribed on Bitcoin, through OP_RETURN or taproot inscriptions, and how shamir secret sharing and threshold encryption is used to create an encrypted version of the multisig descriptor. Finally, attendees will be given a walk through of how to create a multisig wallet on Sparrow, export the output descriptor, encrypt and inscribe it using this tool, and then recover using two Trezor devices.

What should I expect?
Every first Wednesday of the month is a Learning Bitcoin session at ATL BitLab. This week's topic will be posted ahead of time at atlbit.dev. Sometimes it may be a reading discussion group, other times it might be a presentation or workshop.

Regardless, you do not need any prior knowledge to attend. Just come with an open mind.

Is this for me?
If you want to learn about bitcoin, then yes! While these sessions are engineering focused, many of our attendees are not engineers. Our crew also includes designers, hobbyists, product managers, entrepreneurs, and simply curious people who like to stay ahead of the curve with this technology.

Schedule
6:00pm - Doors open, networking and socializing with beverages
6:30pm - Presentation or discussion starts
7:50pm - Wrap-up
8:00pm - The group migrates to a nearby restaurant for dinner