{"data":{"verdict":"RECEIPTED","root":"b01b3ecd84c94580b1c5dee8844131379efd7a753de48bd7a344af63b16cf929","treeSize":3,"receivedAt":"2026-11-05T00:05:40.455Z","label":"agent-run-2026-11-04T23:00Z","algorithm":"RFC 9162 Merkle tree over SHA-256 (leaf 0x00, node 0x01), entries are the raw 32-byte digests","leaves":[{"index":0,"entry":"9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08","leafHash":"f5e2e4772f1744bf1360495cdedc4200385e149bd17aa2a42972d919d6774a5b","proof":["a2f05a36eeaabaacc3743da6898ac8880f5c95334a2c30cbb84c7a62295a6171","8e96df043108b9e5f6f9d1b58b5abd70a842f03ea82cae5b2b2bf04baee04217"]},{"index":1,"entry":"60303ae22b998861bce3b28f33eec1be758a213c86c93c076dbe9f558c11c752","leafHash":"a2f05a36eeaabaacc3743da6898ac8880f5c95334a2c30cbb84c7a62295a6171","proof":["f5e2e4772f1744bf1360495cdedc4200385e149bd17aa2a42972d919d6774a5b","8e96df043108b9e5f6f9d1b58b5abd70a842f03ea82cae5b2b2bf04baee04217"]},{"index":2,"entry":"fd61a03af4f77d870fc21e05e7e80678095c92d808cfb3b5c279ee04c74aca13","leafHash":"8e96df043108b9e5f6f9d1b58b5abd70a842f03ea82cae5b2b2bf04baee04217","proof":["910be5a637c2303da65d4fc7018a0be398a1a943ae5f63d91e8f0dee27c3b4d1"]}],"verify":"1) POST this whole response to /api/v1/verify-provenance (free) to check the signatures over root and receivedAt. 2) For one hash, recompute leafHash = sha256(0x00 || bytes(entry)) and fold its proof with RFC 9162 section 2.1.3.2 against root and treeSize.","limits":["receivedAt is this server's clock at signing, not an RFC 3161 timestamp authority.","The receipt proves these hashes were presented together at that time; it says nothing about what the hashed data is or who made it.","The signer is did:web:agents.writerslogic.com; its C2PA certificate is from a private CA that is not on the C2PA trust list."],"upgrade":{"agent":"verify-provenance","path":"/api/v1/verify-provenance","priceUsdc":"0","adds":"Free verification of this receipt's signatures; no hashes needed."}},"_provenance":{"version":"writerslogic-provenance/1","issuer":"did:web:agents.writerslogic.com","verify":{"endpoint":"POST /api/v1/verify-provenance","did":"did:web:agents.writerslogic.com"},"manifest":{"format":"application/json","instance_id":"xmp:iid:60b6d60d-5959-4eab-850c-7a2a0169e750","claim_generator_info":[{"name":"WritersLogic x402 Agent Hub","version":"2.0.0"}],"title":"Signed hash receipt (Merkle batch, RFC 9162)","assertions":[{"label":"c2pa.actions.v2","data":{"actions":[{"action":"c2pa.created","when":"2026-11-05T00:05:40.455Z","softwareAgent":{"name":"writerslogic-agent-hub/hash-receipt","version":"2.0.0"},"digitalSourceType":"http://cv.iptc.org/newscodes/digitalsourcetype/trainedAlgorithmicMedia","parameters":{"endpoint":"POST /api/v1/hash-receipt","inputDigest":{"alg":"sha256","hash":"b595ebd1bb494ef280eb2e062c2c48261043b49dd358786ba5b44fd65b7e48d4","canonicalization":"JCS"}}}]}},{"label":"c2pa.hash.data","data":{"alg":"sha256","hash":"27d976a64e4fc49e5f65676b32dffaf15b8b53a7caaf5f68925dad131fdef701","name":"jcs-canonical-json(data)"}}]},"credential":{"@context":["https://www.w3.org/ns/credentials/v2"],"id":"urn:uuid:d6698ffe-eb5e-4c65-afc5-41321f6e884d","type":["VerifiableCredential","AgentOutputCredential"],"issuer":"did:web:agents.writerslogic.com","validFrom":"2026-11-05T00:05:40.455Z","credentialSubject":{"id":"urn:sha256:27d976a64e4fc49e5f65676b32dffaf15b8b53a7caaf5f68925dad131fdef701","agent":"hash-receipt","endpoint":"POST /api/v1/hash-receipt","outputDigest":{"alg":"sha256","value":"27d976a64e4fc49e5f65676b32dffaf15b8b53a7caaf5f68925dad131fdef701","canonicalization":"JCS"},"inputDigest":{"alg":"sha256","value":"b595ebd1bb494ef280eb2e062c2c48261043b49dd358786ba5b44fd65b7e48d4","canonicalization":"JCS"},"manifestDigest":{"alg":"sha256","value":"8b642778a0becb2e8d22ce6b5d2fa4f84b880c8917671b2e29618e1a3bf24c0f","canonicalization":"JCS"},"ingredients":[],"payment":{"scheme":"api-key","network":"eip155:8453","payer":"sample"}},"proof":{"type":"DataIntegrityProof","cryptosuite":"eddsa-jcs-2022","created":"2026-11-05T00:05:40.455Z","verificationMethod":"did:web:agents.writerslogic.com#key-1","proofPurpose":"assertionMethod","proofValue":"z1VSq5WaHAMgzCHvQMcUG1797cxCdUnhi5Cwbt9xvcDomAKqNR9j45f2RKzSof2ideNDdvZA4PLTq2Hx7CNvT6hC"}},"ethSignature":{"type":"EIP-191","signer":"did:pkh:eip155:8453:0x3DBd42560cA7a7E448A2c7DfC9E785526189411f","address":"0x3DBd42560cA7a7E448A2c7DfC9E785526189411f","message":"writerslogic-provenance:646a9a06194d2a4ea1bf26376037c301f20124753e8beda7ef0e193b62759954","signature":"0x0c13246496578faf5e8294b1b8660fb0f170d4ffc97c29c4b37ac231301caece2a29c2375f65856c3260777d307ab72473662c64c74e40fd6bbca2a30ffc76331c"}}}