USDG/DELL

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":78813559,"chain":"RobinhoodChain","checked_at":"2026-10-03T04:47:35Z","dev":false,"expires_at":"2026-10-04T04:47:35Z","issuer":"Robinhood","pool":{"base":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"191825597440","decimals":6,"symbol":"USDG"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0xc30c89cB7815A1488b7998D15eEC73961707Fc5a","quote":{"address":"0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","balance":"137885948239525422136","decimals":18,"symbol":"DELL"}},"quote_share_of_supply":0.1537567786896128,"reads":[{"block":null,"method":"eth_getCode","params":["0xc30c89cB7815A1488b7998D15eEC73961707Fc5a","latest"],"result_hash":"4188c2481eadd851bdd8e96b71a1318c1b2f508755eb22fb8db77046068d3f30","slot":null},{"block":78813559,"method":"eth_blockNumber","params":[],"result_hash":"867b30cb44cdec9acc08fb75ba0a40ecfb710cbc558a6fe7c056d6e1881de103","slot":null},{"block":null,"method":"eth_call","params":["0xc30c89cB7815A1488b7998D15eEC73961707Fc5a","token0()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0xc30c89cB7815A1488b7998D15eEC73961707Fc5a","token1()"],"raw_result":"0x941ae714ec6d8130c7b75d67160ca08f1e7d11dd","result_hash":"038f3ee1724f48e9ae22cd4286a2c67e4f003bd7080b53318178764c9a3cf54c","slot":null},{"block":null,"method":"eth_call","params":["0xc30c89cB7815A1488b7998D15eEC73961707Fc5a","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xc30c89cB7815A1488b7998D15eEC73961707Fc5a","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xc30c89cB7815A1488b7998D15eEC73961707Fc5a","factory()"],"raw_result":"Some(0x1f7d7550b1b028f7571e69a784071f0205fd2efa)","result_hash":"3a5325de1b5dc50662a9e2ec44d8428ded4306d2bd46195f62299474690e30aa","slot":null},{"block":null,"method":"eth_call","params":["0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","symbol()"],"raw_result":"Some(\"USDG\")","result_hash":"5cbfd9547b12ffd28d96e5f55c97290c4f230a8d7ad7bbe91dc15f2e61c1a3c5","slot":null},{"block":null,"method":"eth_call","params":["0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","decimals()"],"raw_result":"Some(6)","result_hash":"c68fe6989b1835302197d0af5be845dfab10ed9f9632205eb4ab5b949b9e1a6a","slot":null},{"block":null,"method":"eth_call","params":["0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balanceOf","0xc30c89cB7815A1488b7998D15eEC73961707Fc5a"],"raw_result":"Some(\"191825597440\")","result_hash":"31ffdc6187dbed6f8fce0c18c4305d6f603ccf486c9fd2b32003bf436f4a245c","slot":null},{"block":null,"method":"eth_call","params":["0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","symbol()"],"raw_result":"Some(\"DELL\")","result_hash":"f97f840945bc2faf32a6e2f217670e2b044c3bfeeeacc11aa45ffe8aa6e37002","slot":null},{"block":null,"method":"eth_call","params":["0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","balanceOf","0xc30c89cB7815A1488b7998D15eEC73961707Fc5a"],"raw_result":"Some(\"137885948239525422136\")","result_hash":"696994e1a2a801b47872ecc57255c457dc579f6b885ba775d61e86f9f1091b3a","slot":null},{"block":null,"method":"eth_call","params":["0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","symbol()"],"raw_result":"Some(\"USDG\")","result_hash":"5cbfd9547b12ffd28d96e5f55c97290c4f230a8d7ad7bbe91dc15f2e61c1a3c5","slot":null},{"block":null,"method":"eth_call","params":["0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","name()"],"raw_result":"Some(\"Global Dollar\")","result_hash":"e34c795a5a7df6a2269bde7247321204357731d7742ef5974b04eb6899db8b11","slot":null},{"block":null,"method":"eth_call","params":["0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","decimals()"],"raw_result":"Some(6)","result_hash":"c68fe6989b1835302197d0af5be845dfab10ed9f9632205eb4ab5b949b9e1a6a","slot":null},{"block":null,"method":"eth_call","params":["0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","totalSupply()"],"raw_result":"Some(\"700313947792319\")","result_hash":"34cc3c073911e2b49608c08dddf2d7e40788cfed66076a526846f6268c2165a9","slot":null},{"block":null,"method":"eth_call","params":["0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","symbol()"],"raw_result":"Some(\"DELL\")","result_hash":"f97f840945bc2faf32a6e2f217670e2b044c3bfeeeacc11aa45ffe8aa6e37002","slot":null},{"block":null,"method":"eth_call","params":["0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","name()"],"raw_result":"Some(\"Dell • Robinhood Token\")","result_hash":"1651a67df2fad4c6e585dac27407fa9f40c213985d3e9089b4e020124839dfb2","slot":null},{"block":null,"method":"eth_call","params":["0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","totalSupply()"],"raw_result":"Some(\"896779637390000000000\")","result_hash":"c282544bf5e73f09e66d31cbebe77e20ad0f3d95c12b4a26ac8e36fd4a10e03a","slot":null},{"block":null,"method":"eth_call","params":["0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","uiMultiplier()"],"raw_result":"1000063708620124549","result_hash":"d8f69d79630c42f68e51affa767066368dfdf79526cda808847cc97dbca1cb63","slot":null},{"block":null,"method":"eth_getCode","params":["0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0x941AE714EC6D8130c7B75d67160Ca08f1e7d11Dd","decimals":18,"issuer":"Robinhood","last_checked":"2026-10-03T04:09:51Z","name":"Dell","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"DELL"},"registry_hash":"69180a9d1971ea57866162e5b63d14efc237bb578c5e9f857f46f52069325ecf","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xc30c89cB7815A1488b7998D15eEC73961707Fc5a","ticker":"DELL","verdict":{"Verified":{"issuer":"Robinhood","ticker":"DELL"}},"version":1}

Signature

yh4+D9Y9cRGQt27AhJEDmbZeJYfQ+cgEa2L3coix4U6gL9tdzap364yCw2NREtjmv/os6pivW31d02FRSLL1BQ==

API call

GET /api/attest/002ab702e3132f00d1e8f2b6df6d998a8bb48c24ee075dbd330bba4e748b4650

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.