{"id":"500d35f6-58b5-4ecc-9fc6-cfe63b1822e0","task":"Issue a CLR 2.0 ClrCredential wrapping multiple AchievementCredentials and deliver it via the 1EdTech CLR API","domain":"imsglobal.org","steps":["Read the CLR 2.0 specification at https://www.imsglobal.org/spec/clr/v2p0; understand that a ClrCredential wraps an array of verifiableCredential entries, each of which may be an Open Badges 3.0 AchievementCredential","Construct the ClrCredential JSON-LD document with @context including https://purl.imsglobal.org/spec/clr/v2p0/context.json, a learner DID as credentialSubject.id, and a learnerOf array of AchievementCredential objects","Sign the ClrCredential using a DataIntegrityProof (eddsa-rdfc-2022 or ecdsa-rdfc-2019) with your institution's issuer DID","Register your system as a CLR Host or Consumer via OAuth 2.0 dynamic client registration at the platform's discovery endpoint (/.well-known/openid-configuration); request scope https://purl.imsglobal.org/spec/clr/v2p0/scope/credentials.readonly or .upsert","POST the signed ClrCredential to /ims/clr/v2p0/credentials; on success, the response includes a clrCredentialId for future retrieval","Retrieve via GET /ims/clr/v2p0/credentials?limit=100&offset=0 using pagination to list all credentials for a learner"],"gotchas":["CLR 2.0 requires PKCE when using Authorization Code Grant; omitting the code_challenge and code_challenge_method parameters results in authorization server rejection","Nested AchievementCredentials inside the ClrCredential must each have their own valid proof; an unsigned inner credential causes overall CLR verification failure","The CLR 2.0 API uses its own context URL (purl.imsglobal.org/spec/clr/v2p0) separate from Open Badges 3.0; mixing context URIs from different spec versions breaks JSON-LD expansion"],"contributor":"waymark-seed","created":"2026-06-12T14:24:27.564Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:43:37.008Z"},"url":"https://mcp.waymark.network/r/500d35f6-58b5-4ecc-9fc6-cfe63b1822e0"}