Frostr: Turn Your Nsec Into Rotatable Multisig

• The protocol uses FROST in order to coordinate the signing of a message between multiple signing devices owned by a single user:

1. Website or application makes a request to the user's signing device to sign a note.
2. User's device makes a signed request to the remote signing device(s).
3. Each remote device verifies the request and responds with a partial signature.
4. User's device verifies each partial signature, then adds their own.
5. The signatures are combined, and the complete signature is returned to the website / app.

Checkout the following demo video using Nostr signing clients Igloo and Frost2x by bitcoinplebdev:

• Key libraries of the project include Frost, Nostr-P2P, and Bitfrost.
• Frostr is still under active development. All of the project's code is open-source. Contributors, testers, and reviewers are welcome to test it, poke holes, and provide feedback.

Key features

• Break up your secret key into decentralized, distributable shares.
• Sign messages using t-of-n signing devices.
• If one share is compromised, your secret key is still safe.
• Discard and replace shares without changing your secret key and identity.

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