{"receipt_id":"r_d6f5b275b16a4d0d","sha256":"4bc3bf3cdb7f8270865944f12ee85747c3dc6bd86ceb6d79cbae07f33460b11a","created_at":"2026-10-25T16:55:06.452854+00:00","signature_set":{"schema":"receipt-signature-set/v1","state":"HYBRID","signed":"ascii bytes of the SHA-256 hex digest","signed_at":"2026-10-25T16:55:06Z","hash":{"algorithm":"SHA-256","standard":"FIPS 180-4","value":"4bc3bf3cdb7f8270865944f12ee85747c3dc6bd86ceb6d79cbae07f33460b11a"},"signature":{"algorithm":"ML-DSA-65","standard":"FIPS 204","public_key_id":"did:web:alphacovenantholdings.com:api:vc#key-pq-1","value":"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","implementation":"dilithium-py reference implementation; not FIPS-validated","hybrid_classical":{"algorithm":"Ed25519","standard":"FIPS 186-5","public_key_id":"did:web:alphacovenantholdings.com:api:vc#key-1","value":"A+9xaRXZMiAfzY01Zh1bysAsmz/8t8LEs97ys3ct7qqNop6JZqu7K5tRs/Qsdb+kgIoSmP15kVv54YREh/kHAw=="}},"rule":"In state HYBRID the set verifies only if both signatures verify under the keys named in the DID document.","did_document":"https://alphacovenantholdings.com/api/vc/did.json","states":"https://alphacovenantholdings.com/api/public/cryptography"},"verification":{"state":"HYBRID","set_present":true,"ml_dsa_65_valid":true,"ed25519_valid":true,"set_valid":true,"hash_checked":"4bc3bf3cdb7f8270865944f12ee85747c3dc6bd86ceb6d79cbae07f33460b11a","note":"Ed25519 + ML-DSA-65, both detached over the ASCII bytes of the receipt's SHA-256 hex. Verification of the set succeeds only if BOTH verify. A verifier that does not know ML-DSA may check the Ed25519 signature alone and must say so."},"withdrawn":false,"states":{"CLASSICAL_ONLY":"Ed25519 only. Receipts registered before the signature set existed carry no set; their SHA-256, transparency-log inclusion, SLH-DSA archive checkpoint and OpenTimestamps anchor still verify.","HYBRID":"Ed25519 + ML-DSA-65, both detached over the ASCII bytes of the receipt's SHA-256 hex. Verification of the set succeeds only if BOTH verify. A verifier that does not know ML-DSA may check the Ed25519 signature alone and must say so.","PQC_ONLY":"ML-DSA-65 only; Ed25519 no longer issued. Target state — by policy no later than 2031-12-31 (the OMB M-26-15 digital-signature date for agencies' covered systems); earlier if a break in Ed25519 is published."},"state_now_for_new_receipts":"HYBRID","how_to_verify_offline":"data = ASCII bytes of sha256; ML-DSA-65.verify(pk_pq, data, b64decode(signature.value)); Ed25519.verify(pk_ed, b64decode(signature.hybrid_classical.value), data); keys at /api/vc/did.json.","what_it_attests":"That this hash was registered by this platform at this time. It attests nothing about the party named in the receipt and is not a certification of anything."}