Does GOOGLon / 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":128391674,"chain":"bnb","checked_at":"2026-10-18T16:08:47Z","dev":false,"expires_at":"2026-10-19T16:08:47Z","issuer":"Ondo","pool":{"base":{"address":"0x091FC7778e6932d4009B087B191D1EE3bac5729A","balance":"4048665225349200213","decimals":18,"symbol":"GOOGLon"},"chain":"bnb","dex":"pancake-v3","pool":"0x6731932C92E882Cc22a10749324C70A7d6aDde60","quote":{"address":"0x55d398326f99059fF775485246999027B3197955","balance":"1272289364490256400761","decimals":18,"symbol":"USDT"}},"quote_share_of_supply":0.0001513468703473946,"reads":[{"block":128391674,"method":"eth_blockNumber","params":[],"result_hash":"b6cface354efe1b20c8c30f289993edc8a00551aae7b915cb9d452e4a9a4f0c1","slot":null},{"block":null,"method":"eth_call","params":["0x6731932C92E882Cc22a10749324C70A7d6aDde60","token0()"],"raw_result":"0x091fc7778e6932d4009b087b191d1ee3bac5729a","result_hash":"466177eabe82a5f9992911a243cd2210270ad829816be87bc27ccf792709ee89","slot":null},{"block":null,"method":"eth_call","params":["0x6731932C92E882Cc22a10749324C70A7d6aDde60","token1()"],"raw_result":"0x55d398326f99059ff775485246999027b3197955","result_hash":"66f63b72a2cc2125a9e796877d8894f3c7efb1d98419d7f1f9800b08f25cdc61","slot":null},{"block":null,"method":"eth_call","params":["0x6731932C92E882Cc22a10749324C70A7d6aDde60","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0x6731932C92E882Cc22a10749324C70A7d6aDde60","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x6731932C92E882Cc22a10749324C70A7d6aDde60","factory()"],"raw_result":"0x0bfbcf9fa4f9c56b0f40a671ad40e0805a091865","result_hash":"2e3d0bedb6ff98db8ecf6c7b57f2028219517abe46f0f5212ff489a2c45cafbd","slot":null},{"block":null,"method":"eth_call","params":["0x6731932C92E882Cc22a10749324C70A7d6aDde60","fee()"],"raw_result":"10000","result_hash":"328d48ab2376d2f42d3af5ba69086143c8f5fe883ed195a8280b2154a5711a33","slot":null},{"block":null,"method":"eth_call","params":["0x0BFbCF9fa4f9C56B0F40a671Ad40E0805A091865","getPool","0x091FC7778e6932d4009B087B191D1EE3bac5729A","0x55d398326f99059fF775485246999027B3197955","0x2710"],"raw_result":"0x6731932c92e882cc22a10749324c70a7d6adde60","result_hash":"5c4c231039464f5a8b6ed3107c8da32aa22836333886464104e4466795239cc8","slot":null},{"block":null,"method":"eth_call","params":["0x091FC7778e6932d4009B087B191D1EE3bac5729A","symbol()"],"raw_result":"Some(\"GOOGLon\")","result_hash":"5f0da529cc5c6a9b601a92dbb9ddd08f3c411dfe3510345cfcd1dfea7608ef98","slot":null},{"block":null,"method":"eth_call","params":["0x091FC7778e6932d4009B087B191D1EE3bac5729A","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x091FC7778e6932d4009B087B191D1EE3bac5729A","balanceOf","0x6731932C92E882Cc22a10749324C70A7d6aDde60"],"raw_result":"Some(\"4048665225349200213\")","result_hash":"548f7e7aa18b8750a3f1760a2eed41a821530bba1ab5f4be3cb1d8ed715d0d2c","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","0x6731932C92E882Cc22a10749324C70A7d6aDde60"],"raw_result":"Some(\"1272289364490256400761\")","result_hash":"6d37f09011f6df7774559b836c0e9056db1f897446f6a74bc343ddda14976e92","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":["0x091FC7778e6932d4009B087B191D1EE3bac5729A","symbol()"],"raw_result":"Some(\"GOOGLon\")","result_hash":"5f0da529cc5c6a9b601a92dbb9ddd08f3c411dfe3510345cfcd1dfea7608ef98","slot":null},{"block":null,"method":"eth_call","params":["0x091FC7778e6932d4009B087B191D1EE3bac5729A","name()"],"raw_result":"Some(\"Alphabet Class A (Ondo Tokenized)\")","result_hash":"fe13bb1d7daa6ed02f005adb2079e56324ed37c2a4d6694e82a1699e811c4b4f","slot":null},{"block":null,"method":"eth_call","params":["0x091FC7778e6932d4009B087B191D1EE3bac5729A","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x091FC7778e6932d4009B087B191D1EE3bac5729A","totalSupply()"],"raw_result":"Some(\"26750901528760270578646\")","result_hash":"c1361f127312ef59f7c9a349de69e8c8385c6e1909f56cb90052c206e38a5f24","slot":null},{"block":null,"method":"eth_getCode","params":["0x091FC7778e6932d4009B087B191D1EE3bac5729A","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null},{"block":null,"method":"eth_getCode","params":["0x091FC7778e6932d4009B087B191D1EE3bac5729A","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null}],"registry_entry":{"chain":"bnb","contract":"0x091FC7778e6932d4009B087B191D1EE3bac5729A","decimals":null,"issuer":"Ondo","last_checked":"2026-10-18T09:47:35Z","name":"Alphabet Class A (Ondo Tokenized)","official_deployments":[{"address":"0xbA47214eDd2bb43099611b208f75E4b42FDcfEDc","network":"Ethereum"},{"address":"0x091FC7778e6932d4009B087B191D1EE3bac5729A","network":"BNB Chain"},{"address":"bbahNA5vT9WJeYft8tALrH1LXWffjwqVoUbqYa1ondo","network":"Solana"},{"address":"0x4D34798f18Eb747F7225663F0553eA2D880cf75D","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":"GOOGL"},"registry_hash":"2bf13ff4020924ba1c74d8e732c3dd1609679a3b9a6dc8a796250beb0ae1b589","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x6731932C92E882Cc22a10749324C70A7d6aDde60","ticker":"GOOGL","verdict":{"Verified":{"issuer":"Ondo","ticker":"GOOGL"}},"version":1}

Signature

s+McOBdhERY8u3Dlbu/qY9lct/uH9tei4sIUaoC2nAbI8hZkc0qMpWtu+0urDnPFnBVpNXYJKsPRuAh9+VXFAQ==

API call

GET /api/attest/d2e40ca65f00ea334d2dc5e0663065f4c78a54366bd8c5ca24501a47f90a17cd

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.