Does BIDUon / SCI6900 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":129373683,"chain":"bnb","checked_at":"2026-10-23T18:56:53Z","dev":false,"expires_at":"2026-10-24T18:56:53Z","issuer":"Ondo","pool":{"base":{"address":"0x372d9b65624D6E9B7E839D5D8E4561a7Aff57777","balance":"12229609550740234021191692","decimals":18,"symbol":"SCI6900"},"chain":"bnb","dex":"pancake-v2","pool":"0x28dF303784F7EC51d9d0285EFc1f4e009bA8a73f","quote":{"address":"0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","balance":"1479156620578791266","decimals":18,"symbol":"BIDUon"}},"quote_share_of_supply":0.0007276656103518737,"reads":[{"block":129373683,"method":"eth_blockNumber","params":[],"result_hash":"fb32d1801d6d4c1d63d0340ec7dc49e4ad3b32ee16b2793294b7fac8dbaa08a2","slot":null},{"block":null,"method":"eth_call","params":["0x28dF303784F7EC51d9d0285EFc1f4e009bA8a73f","token0()"],"raw_result":"0x372d9b65624d6e9b7e839d5d8e4561a7aff57777","result_hash":"d8a68559f6b78d4567e69e40cb6d2eb942aacad133588e36b2454aafc08d52fe","slot":null},{"block":null,"method":"eth_call","params":["0x28dF303784F7EC51d9d0285EFc1f4e009bA8a73f","token1()"],"raw_result":"0x467e59ce5d5fe01686d4a80dd1e1dae13549aa6c","result_hash":"467a90aacba39aed4a3a7353bd13f19f0c49bf74908ccc236f34fec907d3d473","slot":null},{"block":null,"method":"eth_call","params":["0x28dF303784F7EC51d9d0285EFc1f4e009bA8a73f","getReserves()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x28dF303784F7EC51d9d0285EFc1f4e009bA8a73f","factory()"],"raw_result":"0xca143ce32fe78f1f7019d7d551a6402fc5350c73","result_hash":"cca9f0708cbe3ba281b9d1b8ebd0a086cc47571f860d681f7f16e9e8a73617f9","slot":null},{"block":null,"method":"eth_call","params":["0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73","getPair","0x372d9b65624D6E9B7E839D5D8E4561a7Aff57777","0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c"],"raw_result":"0x28df303784f7ec51d9d0285efc1f4e009ba8a73f","result_hash":"54db38381fc80c573967fdda2935d72d06bece58336925a869d7a32c21e44869","slot":null},{"block":null,"method":"eth_call","params":["0x372d9b65624D6E9B7E839D5D8E4561a7Aff57777","symbol()"],"raw_result":"Some(\"SCI6900\")","result_hash":"0631fbe46f4aea06be8c93c6c805a5449ac6a95963f152374639297f290431fd","slot":null},{"block":null,"method":"eth_call","params":["0x372d9b65624D6E9B7E839D5D8E4561a7Aff57777","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x372d9b65624D6E9B7E839D5D8E4561a7Aff57777","balanceOf","0x28dF303784F7EC51d9d0285EFc1f4e009bA8a73f"],"raw_result":"Some(\"12229609550740234021191692\")","result_hash":"9f35b7ceab1c78867310ba3b78faebf924f5bd9b75c84511e51a3f2f89d020fc","slot":null},{"block":null,"method":"eth_call","params":["0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","symbol()"],"raw_result":"Some(\"BIDUon\")","result_hash":"220f8e9bc02ccbe96e831d7a0d59bdaa831371ed49b961b2638679b1c78df297","slot":null},{"block":null,"method":"eth_call","params":["0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","balanceOf","0x28dF303784F7EC51d9d0285EFc1f4e009bA8a73f"],"raw_result":"Some(\"1479156620578791266\")","result_hash":"9b38d07e8a440bb084a9cc2a3856f1c8e4cd51a18d8289a7b95810a28610abd9","slot":null},{"block":null,"method":"eth_call","params":["0x372d9b65624D6E9B7E839D5D8E4561a7Aff57777","symbol()"],"raw_result":"Some(\"SCI6900\")","result_hash":"0631fbe46f4aea06be8c93c6c805a5449ac6a95963f152374639297f290431fd","slot":null},{"block":null,"method":"eth_call","params":["0x372d9b65624D6E9B7E839D5D8E4561a7Aff57777","name()"],"raw_result":"Some(\"上证综合指数69000\")","result_hash":"635a4227e92b1e6e3f129dbdc8734d3bba58f49aca7aca4a382b0508d5f824cc","slot":null},{"block":null,"method":"eth_call","params":["0x372d9b65624D6E9B7E839D5D8E4561a7Aff57777","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x372d9b65624D6E9B7E839D5D8E4561a7Aff57777","totalSupply()"],"raw_result":"Some(\"1000000000000000000000000000\")","result_hash":"9a5063c327faec672db6b50450571675cbfbcc3766ebaf6832c3a9f6636ff4d0","slot":null},{"block":null,"method":"eth_call","params":["0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","symbol()"],"raw_result":"Some(\"BIDUon\")","result_hash":"220f8e9bc02ccbe96e831d7a0d59bdaa831371ed49b961b2638679b1c78df297","slot":null},{"block":null,"method":"eth_call","params":["0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","name()"],"raw_result":"Some(\"Baidu (Ondo Tokenized)\")","result_hash":"81ad744dfe8c943d2277392137fca047243b438f27c0485a70af31f83df964ff","slot":null},{"block":null,"method":"eth_call","params":["0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","totalSupply()"],"raw_result":"Some(\"2032742237005707467174\")","result_hash":"ae26dd061589e6fb0ebb351b438fe466eb9413e70655be1d696db1b02a53504b","slot":null},{"block":null,"method":"eth_getCode","params":["0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null},{"block":null,"method":"eth_getCode","params":["0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null}],"registry_entry":{"chain":"bnb","contract":"0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","decimals":null,"issuer":"Ondo","last_checked":"2026-10-22T20:11:46Z","name":"Baidu (Ondo Tokenized)","official_deployments":[{"address":"0x9d4C6AD12B55E4645b585209F90Cc26614061E91","network":"Ethereum"},{"address":"0x467e59ce5D5fe01686D4A80dd1E1DAE13549AA6c","network":"BNB Chain"},{"address":"54CoRF2FYMZNJg9tS36xq5BUcLZ7rju1r59jGc2ondo","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":"BIDU"},"registry_hash":"d3aaa1183f4120326f803d9fb1ab46c445a10027d23def1a059f9fee0befc5c8","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x28dF303784F7EC51d9d0285EFc1f4e009bA8a73f","ticker":"BIDU","verdict":{"Verified":{"issuer":"Ondo","ticker":"BIDU"}},"version":1}

Signature

Am9IJOfkMFoQYiFayVWlg4i3D0EehAeT4CV75RbmL8b0s0u/jhpEh6K549PxPC064QqGE5d2WxrT0swnGq4aAw==

API call

GET /api/attest/d4856e662bd3a50f4ac195b7221281d28dadb79a8728c2a75940cf92c839b9f0

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.