{"slug":"universal-commerce-protocol-ucp","captured_date":"2026-09-20","record":{"slug":"universal-commerce-protocol-ucp","trust_score":59,"trust_tier":"Medium","captured_date":"2026-09-20"},"leaf":"be071bff0b326c778ad2a8960f6840ffe6e97900008d9bb0fc8b46ca86cf7b87","leaf_preimage":"satohub-score-leaf/v1|2026-09-20|universal-commerce-protocol-ucp|59|Medium","proof":["bdbe47af24ca83ccf102ee2620fa7843ec242d76c4198c08e50726706c3323fe","f9d23286d4906a277d5a03b75f819ff70a7d76f074e689fcef85e6455fc9fdf4","4ff1d7caa398ddf548ce9d6d42fa49abdd7aa0bc91de539ce6d393c72f1efe49","bb7140b9959363576349283b9389d45c16d3cd0a1c73d7827bf2fdf92a2aaa84","21385e54d30af2252c44958e4da664ad6c985839ac7c94ad1dad508ee856dc7f","8e9c09359ef7abbf9629aaae58b028d24c17388f50e02a7e5a0ac26764b09db6","8038e05a0da2300811a32940e1483c8564100304413021b6f31d9f0c3cebaabc","51992e09e1609599f6d1874c478096e8e81abeb9626be416b931f8d42608cbae"],"root":"5216b3a5352d78176f3ae7d63b91f40d2be917b01afaf0942fc8dd95f9fe48a9","leaf_count":384,"method":"sha256; leaf=SHA256(\"satohub-score-leaf/v1|\"+date+\"|\"+slug+\"|\"+score+\"|\"+tier); node=SHA256(\"satohub-score-node/v1\"||min(a,b)||max(a,b)); leaves sorted ascending; odd node promoted","rebuilt_root":"5216b3a5352d78176f3ae7d63b91f40d2be917b01afaf0942fc8dd95f9fe48a9","matches_published_root":true,"root_signature":{"alg":"EdDSA","kid":"b04bd38b","sig":"8x2PVRHC3cYKghE5EKbG8G5onlKHwI2HQKTBeqxpNewrA4cAQfbFcJ6mrG4AxtZ8-aclBapZC9sFObM-uv3pCQ","signed_at":"2026-09-20T13:04:07.442Z"},"onchain":null,"onchain_note":"not attested on-chain — key absent (ATTEST_PRIVATE_KEY is not set)","meta":{"rules":["A proof shows this score was in the day's published commitment. It is not a claim that the score is correct, and it is not a safety, quality or returns grade.","Verify against an archived copy of the root rather than the one in this response — a proof checked only against a root served by the same server proves less."],"roots_url":"https://satohub.ai/.well-known/sato-score-roots.json","jwks_url":"https://satohub.ai/.well-known/jwks.json","report_url":"https://satohub.ai/verify/universal-commerce-protocol-ucp","methodology_url":"https://satohub.ai/sato-score","signature":{"alg":"EdDSA","kid":"b04bd38b","sig":"ygZIuP-TrMI0I7_Q9_9w-P9hl5XyBRoo85fwBUXk1co7zMAogpIKwYxmDg27x0CzHXAjjBK0YO9_VthsudZCCA","signed_at":"2026-09-21T06:38:03.340Z","jwks_url":"https://satohub.ai/.well-known/jwks.json","canonicalization":"utf8(signed_at) || 0x0A || canonicalJson(body without meta.signature); canonicalJson = JSON with object keys sorted by Unicode code point, array order preserved, no whitespace"}}}