USDG/SGOV

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":76126072,"chain":"RobinhoodChain","checked_at":"2026-09-30T01:34:19Z","dev":false,"expires_at":"2026-10-01T01:34:19Z","issuer":"Robinhood","pool":{"base":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"1532773039404","decimals":6,"symbol":"USDG"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0xfAb520051f96F4D2a32c22B6a3dD7fFfdf231bFe","quote":{"address":"0x92FD66527192E3e61d4DDd13322Aa222DE86F9B5","balance":"6559081784530770920399","decimals":18,"symbol":"SGOV"}},"quote_share_of_supply":0.23076797827395296,"reads":[{"block":null,"method":"eth_getCode","params":["0xfAb520051f96F4D2a32c22B6a3dD7fFfdf231bFe","latest"],"result_hash":"3d17b09564d614a7b96c7dbf80e368534a8ec0b913c35ed3f2e24ed206182a66","slot":null},{"block":76126072,"method":"eth_blockNumber","params":[],"result_hash":"37fee768bdd3e5bf1fbaec6d7127ba7427fb563b5a902e72841effe395f47f15","slot":null},{"block":null,"method":"eth_call","params":["0xfAb520051f96F4D2a32c22B6a3dD7fFfdf231bFe","token0()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0xfAb520051f96F4D2a32c22B6a3dD7fFfdf231bFe","token1()"],"raw_result":"0x92fd66527192e3e61d4ddd13322aa222de86f9b5","result_hash":"efac6fbf506762bad9cf0d0a8eabdc9bd856304bf6af4af48d244112497a5cee","slot":null},{"block":null,"method":"eth_call","params":["0xfAb520051f96F4D2a32c22B6a3dD7fFfdf231bFe","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xfAb520051f96F4D2a32c22B6a3dD7fFfdf231bFe","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xfAb520051f96F4D2a32c22B6a3dD7fFfdf231bFe","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","0xfAb520051f96F4D2a32c22B6a3dD7fFfdf231bFe"],"raw_result":"Some(\"1532773039404\")","result_hash":"17bcd676fe1388054feb2087b9a62579e8b4cde3b5602ce4f5e75763c986eb47","slot":null},{"block":null,"method":"eth_call","params":["0x92FD66527192E3e61d4DDd13322Aa222DE86F9B5","symbol()"],"raw_result":"Some(\"SGOV\")","result_hash":"f3673135cf2fb7b6e02e87e5d9870c488e13d35aa478ceba27735fcb2eba1e36","slot":null},{"block":null,"method":"eth_call","params":["0x92FD66527192E3e61d4DDd13322Aa222DE86F9B5","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x92FD66527192E3e61d4DDd13322Aa222DE86F9B5","balanceOf","0xfAb520051f96F4D2a32c22B6a3dD7fFfdf231bFe"],"raw_result":"Some(\"6559081784530770920399\")","result_hash":"069a1741b5797555ec4607698e491039ebeef248d20f11bb14a921b3df88913a","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 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Token\")","result_hash":"c74558947338d144bffc729b4dc6335459832aa9938ad34fc461815f90f08ea1","slot":null},{"block":null,"method":"eth_call","params":["0x92FD66527192E3e61d4DDd13322Aa222DE86F9B5","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x92FD66527192E3e61d4DDd13322Aa222DE86F9B5","totalSupply()"],"raw_result":"Some(\"28422841997360000000000\")","result_hash":"8238d938a747ee5ad6eb92edbddd252a8bd47fd09e98cfbdd263c0a133a8ccc0","slot":null},{"block":null,"method":"eth_call","params":["0x92FD66527192E3e61d4DDd13322Aa222DE86F9B5","uiMultiplier()"],"raw_result":"1005101770003214918","result_hash":"5eee0d14a8331232faec197911447e2583bbdc4055483b506518572f9e86882c","slot":null},{"block":null,"method":"eth_getCode","params":["0x92FD66527192E3e61d4DDd13322Aa222DE86F9B5","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x92FD66527192E3e61d4DDd13322Aa222DE86F9B5","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0x92FD66527192E3e61d4DDd13322Aa222DE86F9B5","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-30T00:37:24Z","name":"iShares 0-3 Month Treasury Bond","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"SGOV"},"registry_hash":"5524ad353114ce82e4459bdb0533016e63f15d54f628b91498b20cf2b964d0de","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xfAb520051f96F4D2a32c22B6a3dD7fFfdf231bFe","ticker":"SGOV","verdict":{"Verified":{"issuer":"Robinhood","ticker":"SGOV"}},"version":1}

Signature

xnlISzqmbVdMIhL58c3/DSi0Pr1WY1Rvb9vmTwFJy6MCukGLtiwfm0F5gZRk4eY3s/c58AF+CWUEogrC+V4zCQ==

API call

GET /api/attest/6a69195f8887fa100c64cd9ff5519630854c192614968baf8c439a96f8e39726

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.