# Protocol Report - 2026-02-20

## Summary
The protocol research agent scanned the codebase for external protocol dependencies and compliance. No new protocols were identified. Existing implementations remain compliant with their respective specifications.

## Findings

### 1. Nostr Protocol Compliance
- **NIP-01**: Implemented via `nostr-tools` and `src/lock-ops.mjs`.
- **NIP-33**: Implemented via `d` tag usage in lock events.
- **NIP-40**: Implemented via `expiration` tag in lock events.
- **NIP-78**: Implemented via Kind 30078 for lock storage.
- **Custom**: Kind 27235 used for relay health probes.

### 2. Dependency Updates
- `nostr-tools` version updated from `2.19.4` to `2.23.1` in `PROTOCOL_INVENTORY.md` to match `package.json`.

### 3. Risk Assessment
- **Auth/Crypto**: Uses `nostr-tools` (audited external lib) for signing. No custom crypto implementation found.
- **Network**: Uses standard `ws` library for WebSocket connections.

## Recommendations
- Continue to pin `nostr-tools` version.
- Periodically review `nostr-tools` changelogs for security updates.