A
licenseNot graded
qualityC
maintenanceEnables tamper-evident anchoring of file, text, or JSON hashes to the BSV blockchain via MCP tools, with verification and lookup capabilities.
MIT
CBROS Notary & Decision Log
Server Details
Pay-and-anchor a hash or AI decision log on Cardano (CIP-0190). Non-custodial. MCP-native. Mainnet.
Ownership verified
- Status
- Healthy
- Uptime
- 100.0% over the last 24 hours
- Last Tested
- Transport
- Streamable HTTP · MCP 2025-11-25
- URL
- ChatGPT
- –
- Claude
- –
TDQS
A3.7/5.0
Scored across 6 tools
Disambiguation4/5
The four core verbs map to distinct resources: prepare_* builds transactions, verify_* checks chain data, check_anchor_status looks up a stored proof by proof_id, and get_notary_info is static metadata. The main soft spot is check_anchor_status vs verify_proof, which both report on an anchor, but descriptions clearly separate an authenticated stored-record lookup from a public on-chain receipt check.
Naming Consistency4/5
All names are snake_case verb_noun with semantically meaningful prefixes (prepare_, verify_, check_, get_). It is not a single uniform verb, but the prefix families align with the workflow stages, which keeps it predictable.
Tool Count5/5
Six tools is tight and well-scoped: info, prepare and status for anchors, prepare and verify for decision logs, and public proof verification. Each tool earns its place with no filler.
Completeness4/5
The prepare/verify/status lifecycle is covered for both anchors and hash-chained logs, including idempotency and public verification. The notable gap is enumeration: there is no list tool to discover proof_ids or decision-log entries, so an agent must already hold those identifiers.
Publisher details
- Operator
- CBROS Cardano Stake Pool · Publisher source
- Operator website
- https://www.coudrebros.eu · Publisher source
- Vendor relationship
- First-party · Publisher source
- Documentation
- https://www.coudrebros.eu/notary/ · Publisher source
- Trust center
- https://www.coudrebros.eu · Publisher source
- Restrictions
- Unknown
Available Tools
6 toolscheck_anchor_statusAInspect
Looks up a previously prepared anchor or decision-log entry by proof_id. Requires the api_key that created it.
Inputs: api_key (required), proof_id (required).
get_notary_infoBInspect
No auth needed. Price, min confirmations, spec version, and supported hash algorithms.
Inputs: no named parameters.
prepare_anchorAInspect
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.
Inputs: api_key (required), content_hash (required), from_address (required), algorithm, +1 more.
prepare_decision_logAInspect
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 only for seq=0). Returns a partially-signed transaction to sign and submit yourself.
Inputs: seq (required), api_key (required), content_hash (required), from_address (required), +3 more.
verify_decision_chainBInspect
Independently checks a decision-log chain's integrity from chain data alone (gap-free seq, prev matches, each entry anchored). No auth needed.
Inputs: agent_ref (required).
verify_proofAInspect
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).
Inputs: content, tx_hash, content_hash.
Tool Schema Changelog
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Related MCP Servers
Orphographofficial
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