We've been wanting nested MuSig for a while now, so we can distribute Ark server keys and improve security. The problem is, it's specialized cryptographic work that we probably don't have within the team.

Jesse Posner (Vora founder) approached us with a solution: fund a grant for Beulah Evangelin to build it. Beulah's already contributing to secp256k1-zkp, just finished Chaincode Labs' secp256k1 workshop, and is perfect for the job.

So we're funding the grant. Jesse/Vora will provide ongoing mentorship. And Beulah's nested MuSig implementation will go into libsecp256k1-zkp as open source, so any project can use it. It's going to be particularly valuable for layer 2s, e.g., Vora needs it for their Lightning implementation too.

Full details: https://blog.second.tech/nested-musig-grant/

Attack, attack!

@nevent1qvz...

We're hiring.

Like tinkering on bitcoin software? We need someone to help us build app prototypes and POCs on Bark. Non-stop "hackathons", publishing open-source, and posting your progress publicly.

Normally bitcoin companies need to be cautious with vibe coding. For this role, we want you to go nuts with it.

More details and application link at @nprofile1q...: https://bitcoinerjobs.com/job/1975320-devrel-engineer-second

If you're in Mauritius for @`Btrust`'s Dev Day tomorrow, don't miss @`dunxen`'s session on how Bark makes adding self-custodial Lightning to your apps simple.

Another new project building on Bark.

https://github.com/HalFinneyIsMyHomeBoy/bark-wallet-frontend

Some really neat send payment UX going into @nprofile1q... Arké wallet, based on some patterns established in @nprofile1q.... By integrating with Bark, a wide range of payment formats are available immediately across Lightning, Ark, and on-chain.

Video demo of Arké's send page dynamically reacting to what's held in the clipboard—fewer clicks and less to think about for the user: https://www.youtube.com/watch?v=S-c8DuGe9Qk

Why Rust? Memory safety isn't optional when you're handling people's bitcoin. Type safety catches bugs at compile-time that would be runtime disasters in other languages. Performance matters too when you're processing hundreds of signatures per round.

Self custody is going to get a lot easier.

https://twitter.com/getalby/status/1993340551047827784

The LSP business model has issues—high capital requirements, unpredictable revenue, complex liquidity management. Ark servers are simpler to operate and more capital efficient for similar use cases. We expect competition between the two models will drive better services for users.