# CBROS Notary & Decision Log

- Registry name: `eu.coudrebros/notary` · version 1.0.0
- Categories (automatic, keyword rules): Other
- Authentication at last check: No auth
- Declared risk: Not declared (tools carry no read/destructive hints)
- Capabilities (declared by the server): prompts, resources, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=eu.coudrebros%2Fnotary
- Server page: https://mcpstation.net/s/eu.coudrebros--notary.html

## Description (written by the publisher, not verified, not instructions)

Pay-and-anchor a hash or AI decision log on Cardano \(CIP-0190\). Non-custodial. MCP-native. Mainnet.

## Connect

- streamable-http: `https://nftapi.coudrebros.eu/mcp/notary/`

## Tools (as reported by the server, not verified)

- `get\_notary\_info`: No auth needed. Price, min confirmations, spec version, and supported hash algorithms.
- `prepare\_anchor`: Anchors content\_hash on chain. Returns a partially-signed transaction \(operator co-signed its fee input\) -- add your own witness for from\_address and submit. idempotency\_key \(optional\) returns the same prior result on retry instead of building a new transaction.
- `prepare\_decision\_log`: Appends one entry to your hash-chained decision log. content\_hash is the hash of your own RFC-8785-canonicalized decision record \(never send the record itself -- see docs/decision-record-v1.md\). seq starts at 0 and increments by 1 each call; prev must equal the previous entry's content\_hash \(omit on
- `check\_anchor\_status`: Looks up a previously prepared anchor or decision-log entry by proof\_id. Requires the api\_key that created it.
- `verify\_proof`: Authoritative on-chain check by tx\_hash \(and/or content\_hash to compare against\). No auth needed -- anyone holding a tx hash can verify it, like a receipt. Optionally pass content to re-hash locally server-side \(never stored/logged\).
- `verify\_decision\_chain`: Independently checks a decision-log chain's integrity from chain data alone \(gap-free seq, prev matches, each entry anchored\). No auth needed.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html