Does TSLAon / USDC 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":26218664,"chain":"ethereum","checked_at":"2026-10-18T09:51:27Z","dev":false,"expires_at":"2026-10-19T09:51:27Z","issuer":"Ondo","pool":{"base":{"address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","balance":"47506142701","decimals":6,"symbol":"USDC"},"chain":"ethereum","dex":"uniswap-v3","pool":"0x31227b50eCCDC9C589826AA2D9E7C5619B1895Da","quote":{"address":"0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","balance":"361821050741271381116","decimals":18,"symbol":"TSLAon"}},"quote_share_of_supply":0.01689739354648548,"reads":[{"block":26218664,"method":"eth_blockNumber","params":[],"result_hash":"a0aa94d7bcad1a445606c9ce057140fd1b551c8bc2d29666f5cfa67843554c99","slot":null},{"block":null,"method":"eth_call","params":["0x31227b50eCCDC9C589826AA2D9E7C5619B1895Da","token0()"],"raw_result":"0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48","result_hash":"6239f262cd1d947b947081c9eba6e8771378942478e1d48654f4f132ebb96021","slot":null},{"block":null,"method":"eth_call","params":["0x31227b50eCCDC9C589826AA2D9E7C5619B1895Da","token1()"],"raw_result":"0xf6b1117ec07684d3958cad8beb1b302bfd21103f","result_hash":"593a434230bde40475dba0b9400bf49cd98c7e467d27f4c7d4b33566fc37023c","slot":null},{"block":null,"method":"eth_call","params":["0x31227b50eCCDC9C589826AA2D9E7C5619B1895Da","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0x31227b50eCCDC9C589826AA2D9E7C5619B1895Da","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x31227b50eCCDC9C589826AA2D9E7C5619B1895Da","factory()"],"raw_result":"0x1f98431c8ad98523631ae4a59f267346ea31f984","result_hash":"24b698329e82b3994906dfbd01281d9a6f12f65aa59de65831657e6e928d4c80","slot":null},{"block":null,"method":"eth_call","params":["0x31227b50eCCDC9C589826AA2D9E7C5619B1895Da","fee()"],"raw_result":"10000","result_hash":"328d48ab2376d2f42d3af5ba69086143c8f5fe883ed195a8280b2154a5711a33","slot":null},{"block":null,"method":"eth_call","params":["0x1F98431c8aD98523631AE4a59f267346ea31F984","getPool","0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","0x2710"],"raw_result":"0x31227b50eccdc9c589826aa2d9e7c5619b1895da","result_hash":"731bb778222a906664db845479a42dd4f722b08cd6dbb558bf52d52b5cb44d6b","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","symbol()"],"raw_result":"Some(\"USDC\")","result_hash":"a3c9e246b0832b52e41efce041d8614251f5e288cdd4b192e85bfd3dfcb748ff","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","decimals()"],"raw_result":"Some(6)","result_hash":"c68fe6989b1835302197d0af5be845dfab10ed9f9632205eb4ab5b949b9e1a6a","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","balanceOf","0x31227b50eCCDC9C589826AA2D9E7C5619B1895Da"],"raw_result":"Some(\"47506142701\")","result_hash":"baec1d7523d8f7fc1218178dd90d6be200cde2c909dd971977f51c6a89e74dfb","slot":null},{"block":null,"method":"eth_call","params":["0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","symbol()"],"raw_result":"Some(\"TSLAon\")","result_hash":"3f5b4b7fd20c35ffcdc36234f5eb718aa6bbd73712621e443ba44b3a223481aa","slot":null},{"block":null,"method":"eth_call","params":["0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","balanceOf","0x31227b50eCCDC9C589826AA2D9E7C5619B1895Da"],"raw_result":"Some(\"361821050741271381116\")","result_hash":"bf66c66f99d58ec981a742ed7780f81c799c9bebecab8a5b4db04cf9bcf4401e","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","symbol()"],"raw_result":"Some(\"USDC\")","result_hash":"a3c9e246b0832b52e41efce041d8614251f5e288cdd4b192e85bfd3dfcb748ff","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","name()"],"raw_result":"Some(\"USD Coin\")","result_hash":"fe94af15dc887a2c9df1fb0d6d276e6c586ca9d430ffeac0d05e4baee0637fd1","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","decimals()"],"raw_result":"Some(6)","result_hash":"c68fe6989b1835302197d0af5be845dfab10ed9f9632205eb4ab5b949b9e1a6a","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","totalSupply()"],"raw_result":"Some(\"48209347388310342\")","result_hash":"a867472dee1203f88d8d958c16af506fc19a8eb944dcbc65cc34ba9acc41d6da","slot":null},{"block":null,"method":"eth_call","params":["0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","symbol()"],"raw_result":"Some(\"TSLAon\")","result_hash":"3f5b4b7fd20c35ffcdc36234f5eb718aa6bbd73712621e443ba44b3a223481aa","slot":null},{"block":null,"method":"eth_call","params":["0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","name()"],"raw_result":"Some(\"Tesla (Ondo Tokenized)\")","result_hash":"ce4372d890fbe4409c90f822406c12b47c5233caf66d24707a3953728c28e26a","slot":null},{"block":null,"method":"eth_call","params":["0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","totalSupply()"],"raw_result":"Some(\"21412832088326856950407\")","result_hash":"57697426226987bd3ec5b0ccf942aa21e1cba45e7baa09895176fbeb49bcca49","slot":null},{"block":null,"method":"eth_getCode","params":["0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","latest"],"result_hash":"8538a8190a64db88a5e0ec4c95f0129f9eecd6f3a3aacb869262b82d01d123ec","slot":null},{"block":null,"method":"eth_getCode","params":["0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","latest"],"result_hash":"8538a8190a64db88a5e0ec4c95f0129f9eecd6f3a3aacb869262b82d01d123ec","slot":null}],"registry_entry":{"chain":"ethereum","contract":"0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","decimals":null,"issuer":"Ondo","last_checked":"2026-10-18T09:47:35Z","name":"Tesla (Ondo Tokenized)","official_deployments":[{"address":"0xf6b1117ec07684D3958caD8BEb1b302bfD21103f","network":"Ethereum"},{"address":"0x2494b603319d4D9F9715c9f4496d9E0364B59d93","network":"BNB Chain"},{"address":"KeGv7bsfR4MheC1CkmnAVceoApjrkvBhHYjWb67ondo","network":"Solana"},{"address":"0x417883b1709545f1211A25b00ad13455fC7F1bc5","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":"TSLA"},"registry_hash":"3143486c8ed17e52c07540b096bdf4ef50abfca368b23311d9290e9923561570","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x31227b50eCCDC9C589826AA2D9E7C5619B1895Da","ticker":"TSLA","verdict":{"Verified":{"issuer":"Ondo","ticker":"TSLA"}},"version":1}

Signature

hvC2vXkCLB3Z98kWtM3clT2WFMk4N7FRNJM+ERqXikQEyLnHCkDJDKPp3LlAcfq9EszMAIKnd/tUQhnbXtWKCA==

API call

GET /api/attest/c971822d61d99b6f019e29e9bbf4cf5e11a82d53519b081947c412cbd59264bd

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.