{"receipt_id":"r_aeefefd49f454224","sha256":"4a3f2fbf6a4e55c8bb27b88996a29165c057a996366ee469686af79828cc74a7","created_at":"2026-10-27T23:02:15.844814+00:00","signature_set":{"schema":"receipt-signature-set/v1","state":"HYBRID","signed":"ascii bytes of the SHA-256 hex digest","signed_at":"2026-10-27T23:02:15Z","hash":{"algorithm":"SHA-256","standard":"FIPS 180-4","value":"4a3f2fbf6a4e55c8bb27b88996a29165c057a996366ee469686af79828cc74a7"},"signature":{"algorithm":"ML-DSA-65","standard":"FIPS 204","public_key_id":"did:web:alphacovenantholdings.com:api:vc#key-pq-1","value":"UygGLyQ8XbLbGAWGhrzNdnm4B1T3VKfVW8ksyKXjKEwWu9dVqOEPEGBtYa/Fezxq5ERDNnPb9cCqlkZl9olmfINKqAN+rVDUOG/a0BkHZoy0KanDfCdWcOrHCEtQYKkgZTUsIJ+0vJKQ2Gk2udSCaru2zDBiNBochzyhjC8jVpYcoMqtpBIxEWVWBa9iCHmM5KHj9nvsLlW3bPkgarjtw/s57Se5MMiDYKmVOk2W1kfG00M5EURAc4PzwF5a8K+16ei0TEgCKOtRAYb+EM7JashwljdwJe84FaVKyOSUVkNeFZ7U64l0AIH6j6zkDFC7aPHqdChcl4P4PVg0ppd18GqEENI6K7+q9s/OmxeC5tcSbCYFD2ZvmBuD8aByjhq/lVWhmjB+lGWCOKdAhhkE5eo0gULjgoBYfaElOpCrT6GZkj319f93URDypS/3JgRT8IT6neWWEDysQqskMNTmAiTK5rs2Q41gEXNOTTIZ7i/p0w2CdRX1XkFe6nVimpl3+8twAmjNrxR2IUoARiXrHF8vtrNzo30mRMQmIau3y83JG9QCVWctaeUcQJGd4BtoEHY/aAe119SgcenFj9OmeeuSdNkGdMGSpcAuIUwCxELNNJOQqhvYohQkJNh/q9Iddln0aPRQ6/gDvvvf9BfKcDYo8Q4lW4qB9c8Caxd9aK0B22OOmSYbNNVR59DqvlNqBMdpWoplqZfBTPQ4A4Wu0T9UZqgjF/peSxBXiTVHdBrvA1oauZ8nkrPCoEKRMcNlxCcoPNGrNNdg2SFTZQrdhITFnTT9FwjN6Ji86JOJLZVVCrLwgl2pC4z6lZUIwOGt+1zhsLKw28iT/IBzxZ3vY8Xct1urujc6WB4aB6/UHdd43MpuPdaiezq8D9wCoaKx+ZbL4lGIf26Zx81KBWW0aQjomQe8Z39gtrZCOEvDLirqUF9ZkMp5y4HCIsi26ADcEF0J82NrAvxuHeUJ5D4bxyCchD2RCDM3g7DOQmubAjpq+hpe49BMcQljA7BY/GoHshUKkeacnwAVZrigRE7K8sRkLpkQfIE9hEcdpSdyqBjDEgZCVK688qA8+Zcn2Qq/a6xuR8ATrkgpLjc0HTR16vDseZdXzAklvORyNLJMw56HorATHYnxfExCOHzx8sA8Fd8KWEM70D67kgOiSQnNlNh1sZjoCmjo5HyRtMHcnoC2g+Sn320une0xdkqXccOSxpEVFcQLHjTVYkU7EOhfCCTp2ukFrAVEvLnWL3boL4GwEskRTlhEZrtRcFnUZtt1YMz0vA/Epl8ItCxImoEFWFsNFP+dgHWCpIcJUCEYqDV2GldGkFf3qUbJIlOeUUvlfce6y6pSWHiokt71qrnFHXJJipEywFkMpgH7JMU/uRc07wdRJDjPtIZj8VJX+2reCeYSkkuv7BYHMoy9Ulvv+fmGIPdfsITFOVhMliWons6TOClmfWYQK0Kb/kqLq8s+TemQjOR2kVLQeLYVHe1ygBtnvSCqCgM5S3zQWVJj+83rWxFc7KIgTWFtY3R1PKKcKr2Gfu7a9r6yx6oQg5i2MwByIL5MGClNDXuf9VwJ8Wh5KLYGuZydBuqLRZ7APkm2WrCk+IcgjLpFennlgiHjLzU1uDJ1CePk6jj5FxuJa9OBWm4NoqL12SYDJk+lu/phJWXCMT6ioEvhy/4nsqDenV4c3rTunPZqJiKU6NbnA84c09ABy4F9e2RW5/wMbjjstA01/dT4+KRhYwYUk1PBbofsZsdhjUylmS9GBuEOIS4olIY+E03jq4jWxmqHa+bhVRX1YXQxqv8HLDs2XV81qA5JV411gUr5IIjIZuWJg/htKT6OHgM87l1hFMSl3v+gPGtTFa5g7ogzDv4yLTJh0ELse8R7f08wd3IB09GGnyka9r6pjVJDp5R3x4S8nsNTiDaxeC8ld9D3N5P1bcwxSjPIti5CcmqubNoel1ZCzJzUR0Mqe3MtjyEMut4GIi6++mE+/tIVm63zIrxE4NqN6uwn1EkR/nVAD+yzHrY+vKWpkv21Hknz371AJIkSezXeprtZ8HLgmyARuG/jYKbn0yhDfb1a6GO03xFDZzYe7tV3a7gv8DPBDoy2xKOGA01AUnWeswMZjsbw3ewKcv2ennc0hJyU8kvKnJ5BNKV7Sf4rd3w8H8thHh14XmGbXRXm9GPC76ZhVVVcPVtFre+BIakoIjxVLH1ZrJUOcM6B6XzPUpYKCqO3JheYAxg13chkLcs3Mt2s3/aiEsVpAOQtCGp2NDAhzOK+gENHCv6lU9Hz9QT3IIw4R24b0JECqHkScPxbPVeeNT02utCs1ztFWxzIfBDsMhIz5vgCXbfHLk9i9KTMnJATxdl+7HlCcfelMOQvTfswSE0YcZWsOS9vZuEiRWSvBinHd12w//ezhZ/Rgx9mY0UpXDHzFnovcGrhngqJ3Es5sJY9C6MT06Mk8Ns//MVhmNVC5UqeS8pUqhF3SJQdvOOey2S+z5YHfblfeow0Hx0HnRHy4J85GLtmlwTWXv7vKtFflR3WIdHHuCQgkZHgR8B4Hx6FWU7bXxdLyPEJqpBzM/qmNpyMKPjAhFbBc52MPq4ClFm04sYE+NrP3I6TMmDK74nxueHZB7d22qVoyhFCI1HlX2ab7Yb8UGMAnoHTQUY3tIOTuhl9rLlkGn17l36KGc2+CjrlZktynujkjNMuj2F8Sd06raZdDvxzZwfKBb1OQ9+U/KF5LLFVw/lrRQe8JUKGnQaoOWx77JVhreFkefm2451vv7wPx0kINlB3iM8V7aXbloKNFR5kkk9mXFAlev4mDpZX969W5BcebuYkTvsn2q+KCJD39grlP690Ee2zmOnVccCRa9Tz5WcDAFxECeex2DVJpa8hhJXrJre/0eKAHuJZyMP3I8p79XmZ6zfkCPv+v4GT1lKUjU7c5lzD2Z/OahQwwkHqk7OGg3hmR851RQh+STgXYFM9fJpm4gVTF3zrjCq1+5fVYAAAtOZ5xFgTDAwZDAqySvbjeR1TFIxHYITGVPNjbYoTxQe2J5X64JNvsPjjr4RAw+5+maSvj44VAplJcRwNc+TTjRuI8UmUsGIN/0Psvwmay+K7Dbx9zw4zL4N8+Nx52crvKES1iUqKzpn/kxkdLVltzBgy7t3ko1NTSkOlTykMN1gGqboTh4wLt929xiOg2J1H6AyxFUFwRhwagpX/a+YvVEZG0UGVtEHFyBwYhmbhsz6OFD+BnNSVJQSNSfYbTYb/x/MF22Xa6hxr9FuevzD4AX8sLuHWgRtPSjc7lqgcELd1JdjqzhCVxxkeDZHrGQHbCRzBAluf+DbV3R5I23H67uyMmGyjOZRUG5OI7BLawh57QGikeawG6/YClJy3Lt+wF+21roZYVEfclbFB9YuOK3lqu1Wx2lcYU5wiWiLWLVFS/H5s6AJWwO08t8630PqQQW8nWtFgg3TI+9KSL3EQ3sHquy3DaK8vDyo9leATRbwNHLRx+kx//1XP8mpobYNpPztqP8jMR9AHkpqMTcgBY229dQtdLCheu1fkAsrsQMVfX1HgYWeUHgDEzqzydZKBdRGXVTn3mGz6CW5u+uzyPrmA+3s8j7RWZZPCP1yX+9m2YoHFVnAdZRGPkB89Z47SPLVS5lsEU+mw0f/Quyrlb2mnqkDUHTrfcf++uxt4g5rYMvqz+7LLCQ7H75ESgTyOfWqDU187hp+S9IwJKjqXMv7NVwVlOE23zNPXqy1GuIGRkeGQ03hFRy8ZBOGzL1/CPYTYDCMHeryJkvDYHym1dziIPc0qVtmBJ5Qs2Ws5SCtxq2fq41lyj6F3VsAaPxWuan4g0CUfMe2KclNMnBP5wgSFNKABSWdNme/Sq9BPUn0E+oYfQbzJ0/gpKXcLMGrcSMmS1A853ZXskkSaIcrO4PlT7XnUqh5+dKMZUR99HCn6X+Lj3nhI/FZk0q7Rarohr5wnEjrNVl1DhUC15FyykKoRrOqknM94MpTm49W1mJEhbRWL3QyACeJ1OrEHj7+qIqyQUxZ7xLWSsHwqvkgfDR5Gk8XTGuN47pvUOEBR/RnXvHsl6KPxLY5MG4CKXz+NClLAo4zdc/xMlSAcwV3aCHpVmCfII8BfkgkctzPqRT6oQHAsCwSVYgpGZIzrR7IeW9TEvhxZMSA42Zx106GaicTy6AExl33bYCLKyvIS6V7QA5uY/x4QMa2uD/auio1j1b1Fs3wfuNIjEbUzgtHoyGz8zllidKkC5PHyGCD7atijXdDm8auSCPrPeSNvSu8AJapb4BBdRrhoea6ARyhEYGMs/ym3YrQWMe1DF7nUPxRwyxiEGaJXw630w5QCUtPWWGqqw8/gEy2GipiwyNTmGDlheHqBkJXi6QUPQl1xiaKo9wARFVSKsbvAx80AAAAAAAAABAoTHSYw","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":"hl8EaQ8k9MyX9uuXL4s2QqKsZDT4+Fp7mprpxZ5qQd9H058rbTW4bUdChlgLLrxPMevUeJoFsUwoofBs2vr9AA=="}},"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":"4a3f2fbf6a4e55c8bb27b88996a29165c057a996366ee469686af79828cc74a7","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."}