{"receipt_id":"r_553b69b68bc64321","sha256":"6d6de0e010e67f6a1b8477975c47b5136f79654eefe7d6ddc95d2915efc9f0be","created_at":"2026-10-27T22:59:44.081500+00:00","signature_set":{"schema":"receipt-signature-set/v1","state":"HYBRID","signed":"ascii bytes of the SHA-256 hex digest","signed_at":"2026-10-27T22:59:44Z","hash":{"algorithm":"SHA-256","standard":"FIPS 180-4","value":"6d6de0e010e67f6a1b8477975c47b5136f79654eefe7d6ddc95d2915efc9f0be"},"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":"ytrpuup4JbS18qHnVmvIArK0Ug94l3tqwD9n6hu4ldkcABeSyBwfTBVFLI7OYedo+myd3mTtyM3O8KtA9NY+CQ=="}},"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":"6d6de0e010e67f6a1b8477975c47b5136f79654eefe7d6ddc95d2915efc9f0be","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 A verifier that does not know ML-DSA may check the Ed25519 signature alone and must say so."},"withdrawn":false,"states":{"CLASSICAL_ONLY":"Ed25519 only.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."}