AI/NVDA

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":76087268,"chain":"RobinhoodChain","checked_at":"2026-09-30T00:29:14Z","dev":false,"expires_at":"2026-10-01T00:29:14Z","issuer":"Robinhood","pool":{"base":{"address":"0x2E8c31162b855A2ffa90F6F8634643Ad6F111e18","balance":"6675068254444971943416","decimals":18,"symbol":"AI"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0x40ea3e3A6aB2A95F35fD26BCD227AE1F0D5A58Cc","quote":{"address":"0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","balance":"334329421891322523","decimals":18,"symbol":"NVDA"}},"quote_share_of_supply":4.054089811251839e-6,"reads":[{"block":null,"method":"eth_getCode","params":["0x40ea3e3A6aB2A95F35fD26BCD227AE1F0D5A58Cc","latest"],"result_hash":"e7901c50413503c36ffd02360ada1ec7ae57c927c0bb8c377b602c93723ac737","slot":null},{"block":76087268,"method":"eth_blockNumber","params":[],"result_hash":"feda362e1051d3cee1684de9d74aaa95da9a2aacee7ac365ab7866b55d9c97aa","slot":null},{"block":null,"method":"eth_call","params":["0x40ea3e3A6aB2A95F35fD26BCD227AE1F0D5A58Cc","token0()"],"raw_result":"0x2e8c31162b855a2ffa90f6f8634643ad6f111e18","result_hash":"8172265b70db1680ca61c7000ab2d63a3fe33bf26ab8771a2985bcb1361c92e9","slot":null},{"block":null,"method":"eth_call","params":["0x40ea3e3A6aB2A95F35fD26BCD227AE1F0D5A58Cc","token1()"],"raw_result":"0xd0601ce157db5bdc3162bbac2a2c8af5320d9eec","result_hash":"837593898070a9209e25b8e838227fd9a1d34f048e67360db2591dc0ee9b7688","slot":null},{"block":null,"method":"eth_call","params":["0x40ea3e3A6aB2A95F35fD26BCD227AE1F0D5A58Cc","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0x40ea3e3A6aB2A95F35fD26BCD227AE1F0D5A58Cc","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x40ea3e3A6aB2A95F35fD26BCD227AE1F0D5A58Cc","factory()"],"raw_result":"Some(0x1f7d7550b1b028f7571e69a784071f0205fd2efa)","result_hash":"3a5325de1b5dc50662a9e2ec44d8428ded4306d2bd46195f62299474690e30aa","slot":null},{"block":null,"method":"eth_call","params":["0x2E8c31162b855A2ffa90F6F8634643Ad6F111e18","symbol()"],"raw_result":"Some(\"AI\")","result_hash":"e491ce6ed90566b76e173a3aaa3d761c8c769eca8714ade1e52d57e76a6852ac","slot":null},{"block":null,"method":"eth_call","params":["0x2E8c31162b855A2ffa90F6F8634643Ad6F111e18","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x2E8c31162b855A2ffa90F6F8634643Ad6F111e18","balanceOf","0x40ea3e3A6aB2A95F35fD26BCD227AE1F0D5A58Cc"],"raw_result":"Some(\"6675068254444971943416\")","result_hash":"303252aa6e2b466e45a1aab09f736e1f2340ea8bda4f5fd206c07fdb0d313f66","slot":null},{"block":null,"method":"eth_call","params":["0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","symbol()"],"raw_result":"Some(\"NVDA\")","result_hash":"021d1642ab9caf5c93ff501b70a3d5285343a63f3b632bcbe7daed2fdac7ebfb","slot":null},{"block":null,"method":"eth_call","params":["0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","balanceOf","0x40ea3e3A6aB2A95F35fD26BCD227AE1F0D5A58Cc"],"raw_result":"Some(\"334329421891322523\")","result_hash":"54ea3dba19dfe5137c074e2dbc04c4bb94e2535327cedb24eb716f31e7899247","slot":null},{"block":null,"method":"eth_call","params":["0x2E8c31162b855A2ffa90F6F8634643Ad6F111e18","symbol()"],"raw_result":"Some(\"AI\")","result_hash":"e491ce6ed90566b76e173a3aaa3d761c8c769eca8714ade1e52d57e76a6852ac","slot":null},{"block":null,"method":"eth_call","params":["0x2E8c31162b855A2ffa90F6F8634643Ad6F111e18","name()"],"raw_result":"Some(\"Artificial Inu\")","result_hash":"717bc35d84f3decb3599dba2051915aacc863fc3af031b3fea5b980f87a7b350","slot":null},{"block":null,"method":"eth_call","params":["0x2E8c31162b855A2ffa90F6F8634643Ad6F111e18","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x2E8c31162b855A2ffa90F6F8634643Ad6F111e18","totalSupply()"],"raw_result":"Some(\"991240204439085684213249849\")","result_hash":"5fa042d414f7cbf6efc2a1bbd049b5f85f8ad521efb02b0781d03c67105f7ff3","slot":null},{"block":null,"method":"eth_call","params":["0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","symbol()"],"raw_result":"Some(\"NVDA\")","result_hash":"021d1642ab9caf5c93ff501b70a3d5285343a63f3b632bcbe7daed2fdac7ebfb","slot":null},{"block":null,"method":"eth_call","params":["0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","name()"],"raw_result":"Some(\"NVIDIA • Robinhood Token\")","result_hash":"164300b6b2737c6d4c2f7641a7df85a5a7adae8429019a4b66cdf2e8e5fe57c6","slot":null},{"block":null,"method":"eth_call","params":["0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","totalSupply()"],"raw_result":"Some(\"82467196696880000000000\")","result_hash":"2546ebc0dc03edf8073415f76b04397336d2aa542d695ecb9dbcec180af102cc","slot":null},{"block":null,"method":"eth_call","params":["0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","uiMultiplier()"],"raw_result":"1000775159164630595","result_hash":"52e5ec7fbc2c3245d93278c80d04f4f9d203a2a2284a006b4b2e708b84182d87","slot":null},{"block":null,"method":"eth_getCode","params":["0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-29T23:37:24Z","name":"NVIDIA","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"NVDA"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x40ea3e3A6aB2A95F35fD26BCD227AE1F0D5A58Cc","ticker":"NVDA","verdict":{"Verified":{"issuer":"Robinhood","ticker":"NVDA"}},"version":1}

Signature

O610aZnqIsNIfQrRZU4yizeZFmZRcxO4p/0NyBpIm20Pua0uJZuI6VHTjzWR2bH2S5HzpvcO0nPM0LLh0CLLDA==

API call

GET /api/attest/7c7043b44b6cb481177f4affba05ed3cb9e816b7125947031e2bc8cadf0d4437

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.