Operational walkthroughs for specific wallet combinations, a description of what Keylay protects and what it does not, and background on project scope and status.
Each guide covers the full workflow for a specific coordinator and signer combination — from generating keys to signing a transaction remotely — with Keylay handling the coordination between participants.
Remote multisig setup and signing with Sparrow as coordinator and Coldcard Q hardware wallets as air-gapped signers. Covers key generation on the Q, cosigner export via QR, wallet assembly in Sparrow, descriptor distribution, and remote PSBT signing.
Additional guides covering other coordinator and signer combinations are in development. The Sparrow + Coldcard Q guide serves as the reference pattern for what each guide will include.
Operational flow, architecture, and project status — setup and signing walkthroughs, air-gapped use, how the system is built, and what is planned.
Threat assumptions, what the relay can and cannot see, what the session code is assumed to protect, and what hardening is implemented or still missing.
A side-by-side with Nunchuk, SigningRoom, and Bitcoin Safe — including what each does better than Keylay today and where the threat models differ.
Common problems with QR scanning, session connections, file transfers, and wallet compatibility — and what to try. Also covers how to report an issue.
Keylay is open source. The relay, session logic, and encryption implementation are publicly auditable on GitHub.
