{"status":"attested","page":"https://annalist.dev/mcp/ai.picsha/picsha","statement":{"type":"annalist.mcp-check/v1","issuer":"https://annalist.dev","subject":{"name":"ai.picsha/picsha","url":"https://api.picsha.ai/v1/mcp"},"issued_at":"2026-10-18T01:02:17Z","valid_until":"2026-10-25T01:02:17Z","grade":"A","score":100,"facts":{"probes_7d":4,"up_pct_7d":100,"median_ms":775,"access":"oauth","tools_count":null,"tools_changed_14d":false,"last_tools_change":null,"domain_age_days":null,"registry_status":"active"},"flags":[],"reasons":["+: answered 100% of our probes in 7 days"],"method":"mcp-1","evidence":{"probes":"derived/checks/mcp/probes/","ledger":"https://github.com/ryanroskowski/annalist-ledger"}},"signature":"u223x6xziWCovSWp9-P-d20PHj9XtMczCfKHjWh_L4D5TnFlfEDS_bgQBu43B5-x_8lRPfew-Ne8jt6fU9qcDQ","key_id":"187e49f200625a2f","public_key_url":"https://api.annalist.dev/.well-known/annalist-key.json","how_to_verify":"Ed25519 signature (base64url) over the RFC 8785 canonical JSON of `statement`, checked with the public key at https://api.annalist.dev/.well-known/annalist-key.json (key_id must match). Then check valid_until. The probes behind it are archived daily, and each day's archive hashes are in the public ledger."}