Does HIMSon / JPF match its issuer's published contract?

QED signs a canonical JSON payload. Fetch the public key from /.well-known/qed.json, then check the signature against this payload.

Canonical JSON

{"block":128778391,"chain":"bnb","checked_at":"2026-10-20T16:30:37Z","dev":false,"expires_at":"2026-10-21T16:30:37Z","issuer":"Ondo","pool":{"base":{"address":"0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","balance":"2154509522948088915","decimals":18,"symbol":"HIMSon"},"chain":"bnb","dex":"pancake-v3","pool":"0x714F339039FEeb862065C03C7b8EFBA88F1b8D4A","quote":{"address":"0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","balance":"448770781768122626879","decimals":18,"symbol":"JPF"}},"quote_share_of_supply":0.00010374947124996566,"reads":[{"block":128778391,"method":"eth_blockNumber","params":[],"result_hash":"fbb2693a24db72e662722c1b9a98e6effc25f0a6adb681965aae27e70b5c3cde","slot":null},{"block":null,"method":"eth_call","params":["0x714F339039FEeb862065C03C7b8EFBA88F1b8D4A","token0()"],"raw_result":"0x4693f6f5ef257381a28afd0673e64d8b32d5c6ad","result_hash":"db708bd694d05a40ee733f0d5912b1eac22d44603f3c21cabc9686b3c4c643f5","slot":null},{"block":null,"method":"eth_call","params":["0x714F339039FEeb862065C03C7b8EFBA88F1b8D4A","token1()"],"raw_result":"0x70c629478707c8a4eae7fdc0ee54a9f61bee4901","result_hash":"3b2c8aa6ac7f4aeb3f10f406093b5b9378cfd8c6a5b3f996e1cdd7394e2f6a85","slot":null},{"block":null,"method":"eth_call","params":["0x714F339039FEeb862065C03C7b8EFBA88F1b8D4A","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0x714F339039FEeb862065C03C7b8EFBA88F1b8D4A","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x714F339039FEeb862065C03C7b8EFBA88F1b8D4A","factory()"],"raw_result":"0x0bfbcf9fa4f9c56b0f40a671ad40e0805a091865","result_hash":"2e3d0bedb6ff98db8ecf6c7b57f2028219517abe46f0f5212ff489a2c45cafbd","slot":null},{"block":null,"method":"eth_call","params":["0x714F339039FEeb862065C03C7b8EFBA88F1b8D4A","fee()"],"raw_result":"10000","result_hash":"328d48ab2376d2f42d3af5ba69086143c8f5fe883ed195a8280b2154a5711a33","slot":null},{"block":null,"method":"eth_call","params":["0x0BFbCF9fa4f9C56B0F40a671Ad40E0805A091865","getPool","0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","0x2710"],"raw_result":"0x714f339039feeb862065c03c7b8efba88f1b8d4a","result_hash":"2f12e6e4b67dfd2b190f6a3be740650e73b991268b9a88ef4aaaf1e3a5611f0e","slot":null},{"block":null,"method":"eth_call","params":["0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","symbol()"],"raw_result":"Some(\"HIMSon\")","result_hash":"735318f8fcdb5eb2d2c64042ec336edbbdc791f0caf68158abe21705cdb6ace6","slot":null},{"block":null,"method":"eth_call","params":["0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","balanceOf","0x714F339039FEeb862065C03C7b8EFBA88F1b8D4A"],"raw_result":"Some(\"2154509522948088915\")","result_hash":"3e191e4065a8a52cceaf902d39c2a69dc8565f034a12b4a61b003d04cc42d7d0","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","symbol()"],"raw_result":"Some(\"JPF\")","result_hash":"8d248370e596f231428822df40bc446c95db691f13ab32d43949b87c5e60288a","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","balanceOf","0x714F339039FEeb862065C03C7b8EFBA88F1b8D4A"],"raw_result":"Some(\"448770781768122626879\")","result_hash":"cfa0766cc44d1ce26aa4588c8cf4dee72e46cdd4d39d4ef004372e8e8837bbff","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","symbol()"],"raw_result":"Some(\"JPF\")","result_hash":"8d248370e596f231428822df40bc446c95db691f13ab32d43949b87c5e60288a","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","name()"],"raw_result":"Some(\"Julius personal farm\")","result_hash":"08820e6e2c3ef656296efff8784b08c17ac97ed4636beb4b65a6f88a7ea27eb0","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","totalSupply()"],"raw_result":"Some(\"1000000000000000000000000\")","result_hash":"29e309e3b943b514eee171b0c8f1348f1e8e33614ee2211fddb192da1a765d10","slot":null},{"block":null,"method":"eth_call","params":["0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","symbol()"],"raw_result":"Some(\"HIMSon\")","result_hash":"735318f8fcdb5eb2d2c64042ec336edbbdc791f0caf68158abe21705cdb6ace6","slot":null},{"block":null,"method":"eth_call","params":["0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","name()"],"raw_result":"Some(\"Hims & Hers Health (Ondo Tokenized)\")","result_hash":"5ceea4648e8a4dcdf14339f30f6c678811c229aac0dfe9f12a593d41099c378c","slot":null},{"block":null,"method":"eth_call","params":["0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","totalSupply()"],"raw_result":"Some(\"20766462681599468325608\")","result_hash":"c46e61993c72183eff673f187ee9d5fee682c6897655a87e27ce023579f4c2a4","slot":null},{"block":null,"method":"eth_getCode","params":["0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null},{"block":null,"method":"eth_getCode","params":["0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null}],"registry_entry":{"chain":"bnb","contract":"0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","decimals":null,"issuer":"Ondo","last_checked":"2026-10-19T21:40:22Z","name":"Hims & Hers Health (Ondo Tokenized)","official_deployments":[{"address":"0xCa468554e5C0423Ee858fe3942c9568C51FcAa79","network":"Ethereum"},{"address":"0x4693f6F5EF257381a28afd0673e64d8b32d5C6aD","network":"BNB Chain"},{"address":"bdh3njeo19d2TBLAKTGvCWdSoArfVw8uZBAJHY4ondo","network":"Solana"}],"source":"https://docs.ondo.finance/addresses.md","source_url":"https://www.dropbox.com/scl/fi/qjfxyg748mx0dwi6up86d/EXTERNAL-Ondo-GM-Tokens-Ondo-GM-Tokens.csv?rlkey=n3no1w78wrah3umsl0nr9s77i&e=2&st=spdit2q1&dl=1","ticker":"HIMS"},"registry_hash":"e42f41f1e0f0dc698c2f40aa64c9df099fb8b38e10dd3a1a8d6c92b85ad7aedb","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x714F339039FEeb862065C03C7b8EFBA88F1b8D4A","ticker":"HIMS","verdict":{"Verified":{"issuer":"Ondo","ticker":"HIMS"}},"version":1}

Signature

RoiqECC8t9dNqLpW45/I8gNxgK8Ewsl4kSaKB/MqJmIpRQJRDuaF8BsjLA9YH5VJwpgKZXnPakQs/4+kqx58CA==

API call

GET /api/attest/e7707d3e13fe79f0242ad44272844b2fc6b7b7b341e6f5c83fc79b8998bf78b5

1. Fetch the public key and attestation JSON, then verify the signature with the published key.
2. Canonicalize the payload with sorted object keys and no whitespace, then verify its SHA-256 attestation id.
3. Run the API call above and compare the returned payload, serial, signer, and signature with this certificate.