{"rule_id":"AB-057","category":"identity","icon":"🆔","title":"DID Document","short_description":"Your site provides a Decentralized Identifier document for on-chain identity verification.","user_value":"A DID document lets agents verify your identity on the blockchain, providing cryptographic proof of who you are.","wrong_example":"No DID document. Agents can't verify your identity cryptographically.","right_example":"A DID document provides cryptographic proof of your identity.","effort_hint":"complex","estimated_cost":"$100+","severity":"low","pillar":"executability","version":"1.0.0","counted_in_score":false,"check":{"type":"http_fetch","sources":["identity"],"target":"/.well-known/did.json"},"fix":{"eligible":false,"type":"assisted","note":"Publish a DID document at /.well-known/did.json"},"checklist_anchor":"#AB-057","checklist_url":"/agent-readiness-checklist#AB-057","html_url":"/rules/AB-057","json_url":"/rules/AB-057.json","related_rules":[{"rule_id":"AB-056","title":"WebFinger Identity Lookup","category":"identity"},{"rule_id":"AB-112","title":"OAuth Authorization Server metadata (RFC 9728)","category":"identity"}]}