Does INTCon / USDT 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":128415634,"chain":"bnb","checked_at":"2026-10-18T19:08:33Z","dev":false,"expires_at":"2026-10-19T19:08:33Z","issuer":"Ondo","pool":{"base":{"address":"0x55d398326f99059fF775485246999027B3197955","balance":"45515880918316707004","decimals":18,"symbol":"USDT"},"chain":"bnb","dex":"pancake-v3","pool":"0x95474285f7C60842528CA62EB15a9e2AD50855AB","quote":{"address":"0xA528CaaA2f96090e379d43F90834C75dF54D6E74","balance":"6203861269879166929","decimals":18,"symbol":"INTCon"}},"quote_share_of_supply":0.00006500394387814924,"reads":[{"block":128415634,"method":"eth_blockNumber","params":[],"result_hash":"7960df17a4d827492cb642095f842f1c496bc730ddc1aec7e15066679175a0d8","slot":null},{"block":null,"method":"eth_call","params":["0x95474285f7C60842528CA62EB15a9e2AD50855AB","token0()"],"raw_result":"0x55d398326f99059ff775485246999027b3197955","result_hash":"66f63b72a2cc2125a9e796877d8894f3c7efb1d98419d7f1f9800b08f25cdc61","slot":null},{"block":null,"method":"eth_call","params":["0x95474285f7C60842528CA62EB15a9e2AD50855AB","token1()"],"raw_result":"0xa528caaa2f96090e379d43f90834c75df54d6e74","result_hash":"055550b0d2ada2141c2753b2951c04b9a72aa44074911f5d69fce3cada3ea51d","slot":null},{"block":null,"method":"eth_call","params":["0x95474285f7C60842528CA62EB15a9e2AD50855AB","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0x95474285f7C60842528CA62EB15a9e2AD50855AB","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x95474285f7C60842528CA62EB15a9e2AD50855AB","factory()"],"raw_result":"0x0bfbcf9fa4f9c56b0f40a671ad40e0805a091865","result_hash":"2e3d0bedb6ff98db8ecf6c7b57f2028219517abe46f0f5212ff489a2c45cafbd","slot":null},{"block":null,"method":"eth_call","params":["0x95474285f7C60842528CA62EB15a9e2AD50855AB","fee()"],"raw_result":"2500","result_hash":"c470156de4cb3620b0749c19d984d0666924d83d0ec37998dd6b637a87a2ec3b","slot":null},{"block":null,"method":"eth_call","params":["0x0BFbCF9fa4f9C56B0F40a671Ad40E0805A091865","getPool","0x55d398326f99059fF775485246999027B3197955","0xA528CaaA2f96090e379d43F90834C75dF54D6E74","0x9c4"],"raw_result":"0x95474285f7c60842528ca62eb15a9e2ad50855ab","result_hash":"8d32cbb55b3d16c4e71bbc77255d5fd671caa0051a86ba99f9b46bae3c3294b4","slot":null},{"block":null,"method":"eth_call","params":["0x55d398326f99059fF775485246999027B3197955","symbol()"],"raw_result":"Some(\"USDT\")","result_hash":"a851493323e1198c0940c2b2ca5c59e97da9c6f50f63f0c09779709ef2572f84","slot":null},{"block":null,"method":"eth_call","params":["0x55d398326f99059fF775485246999027B3197955","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x55d398326f99059fF775485246999027B3197955","balanceOf","0x95474285f7C60842528CA62EB15a9e2AD50855AB"],"raw_result":"Some(\"45515880918316707004\")","result_hash":"2533967096221fd20ed547a2a71e8953e2eb8287f753f4c9ef2455a723776ca3","slot":null},{"block":null,"method":"eth_call","params":["0xA528CaaA2f96090e379d43F90834C75dF54D6E74","symbol()"],"raw_result":"Some(\"INTCon\")","result_hash":"e0431923e6cfc413a613971dccd7d084ff42838cac086ecace3a2a2b8d966721","slot":null},{"block":null,"method":"eth_call","params":["0xA528CaaA2f96090e379d43F90834C75dF54D6E74","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xA528CaaA2f96090e379d43F90834C75dF54D6E74","balanceOf","0x95474285f7C60842528CA62EB15a9e2AD50855AB"],"raw_result":"Some(\"6203861269879166929\")","result_hash":"825f2e977d5289831347c344b5af9769be76e7d12627db37cbb2491e23f59fe3","slot":null},{"block":null,"method":"eth_call","params":["0x55d398326f99059fF775485246999027B3197955","symbol()"],"raw_result":"Some(\"USDT\")","result_hash":"a851493323e1198c0940c2b2ca5c59e97da9c6f50f63f0c09779709ef2572f84","slot":null},{"block":null,"method":"eth_call","params":["0x55d398326f99059fF775485246999027B3197955","name()"],"raw_result":"Some(\"Tether USD\")","result_hash":"8f7cfea6e15ea5712d4bf603e3223e8de9dfdee3c5fe9a25ec1181218bd425ad","slot":null},{"block":null,"method":"eth_call","params":["0x55d398326f99059fF775485246999027B3197955","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x55d398326f99059fF775485246999027B3197955","totalSupply()"],"raw_result":"Some(\"9184991859520259774116723649\")","result_hash":"b5a4e3e312d5f88f7b6f5d44368633422f48dda22b217c1ece79f64edd5719c9","slot":null},{"block":null,"method":"eth_call","params":["0xA528CaaA2f96090e379d43F90834C75dF54D6E74","symbol()"],"raw_result":"Some(\"INTCon\")","result_hash":"e0431923e6cfc413a613971dccd7d084ff42838cac086ecace3a2a2b8d966721","slot":null},{"block":null,"method":"eth_call","params":["0xA528CaaA2f96090e379d43F90834C75dF54D6E74","name()"],"raw_result":"Some(\"Intel (Ondo Tokenized)\")","result_hash":"6f2ef18a0506236727ea6cd8ebc6e5635e8b021563c9986a1fe0cb00547bcf33","slot":null},{"block":null,"method":"eth_call","params":["0xA528CaaA2f96090e379d43F90834C75dF54D6E74","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xA528CaaA2f96090e379d43F90834C75dF54D6E74","totalSupply()"],"raw_result":"Some(\"95438228817445103442257\")","result_hash":"43125e0fc5765df7d7a43f9b2ccd666c31c4ea7197a7ee5f6603e517efd63546","slot":null},{"block":null,"method":"eth_getCode","params":["0xA528CaaA2f96090e379d43F90834C75dF54D6E74","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null},{"block":null,"method":"eth_getCode","params":["0xA528CaaA2f96090e379d43F90834C75dF54D6E74","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null}],"registry_entry":{"chain":"bnb","contract":"0xA528CaaA2f96090e379d43F90834C75dF54D6E74","decimals":null,"issuer":"Ondo","last_checked":"2026-10-18T18:54:11Z","name":"Intel (Ondo Tokenized)","official_deployments":[{"address":"0xFdA09936DbD717368De0835bA441d9E62069d36f","network":"Ethereum"},{"address":"0xA528CaaA2f96090e379d43F90834C75dF54D6E74","network":"BNB Chain"},{"address":"cJpUMp5R7rZ6fGeLHbHhrRuJzK9mkyKDjZqNpT3ondo","network":"Solana"},{"address":"0x7bf529bb5Db370D679F33f4fe5420F48eE234bB7","network":"HyperEVM"}],"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":"INTC"},"registry_hash":"e40a8f7ec2f1a2c1d6467a45e0976602299513549c0406d646df02a3ecb928c8","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x95474285f7C60842528CA62EB15a9e2AD50855AB","ticker":"INTC","verdict":{"Verified":{"issuer":"Ondo","ticker":"INTC"}},"version":1}

Signature

syrsU7oIIlXKkRTRYWaomfhUmz+P2GQW/Lo9QtVUI9KKxGrQJdg5CC1MKJMdpaSXc+FLkYg5XdD2suyXSypGDA==

API call

GET /api/attest/d708d9135690a0d9cd0b6d1dbb4079a77d3cb7bc4c10a6c5e8b6faf63377d1eb

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.