Introducing Key Ceremony — a free, open-source tool for documenting your Bitcoin multisig wallet setup. Record who holds each key, where devices and backups are stored, and how to recover. It generates a ceremony record as a PDF, entirely in your browser. All data is encrypted client-side using WebAuthn PRF. The server never sees your data in the clear. No PRF-capable passkey? There's a printable blank template too — no account needed. https://ceremony.dpinkerton.com Full write-up on the design decisions and zero-trust architecture: https://dpinkerton.com/posts/key-ceremony-evolution/