USDG/CRCL

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":76124989,"chain":"RobinhoodChain","checked_at":"2026-09-30T01:32:43Z","dev":false,"expires_at":"2026-10-01T01:32:43Z","issuer":"Robinhood","pool":{"base":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"546768482436","decimals":6,"symbol":"USDG"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0x654E4143e82a5824445Ade0824351C2A9ACD95a8","quote":{"address":"0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","balance":"13714493044418658911558","decimals":18,"symbol":"CRCL"}},"quote_share_of_supply":0.22260115928877047,"reads":[{"block":null,"method":"eth_getCode","params":["0x654E4143e82a5824445Ade0824351C2A9ACD95a8","latest"],"result_hash":"9930bdc4545983f2567fd3c80120661a2c03883d9a7f29e174bf6eca76edb127","slot":null},{"block":76124989,"method":"eth_blockNumber","params":[],"result_hash":"e5365c2b8642aacc4e7c9d7edc8b3fd05a82faae7ae19c4d1d7aeb5c3136c43b","slot":null},{"block":null,"method":"eth_call","params":["0x654E4143e82a5824445Ade0824351C2A9ACD95a8","token0()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0x654E4143e82a5824445Ade0824351C2A9ACD95a8","token1()"],"raw_result":"0xdf0992e440dd0be65bd8439b609d6d4366bf1cb5","result_hash":"bc44ca1d75a3d1939794e3de298a02bbab716692ea8d5bf5be8c0e56fb2e402b","slot":null},{"block":null,"method":"eth_call","params":["0x654E4143e82a5824445Ade0824351C2A9ACD95a8","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0x654E4143e82a5824445Ade0824351C2A9ACD95a8","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x654E4143e82a5824445Ade0824351C2A9ACD95a8","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","0x654E4143e82a5824445Ade0824351C2A9ACD95a8"],"raw_result":"Some(\"546768482436\")","result_hash":"b55c0477f846e0ccb95b701a8fe93048d437162ae81c896f010818d9b1902030","slot":null},{"block":null,"method":"eth_call","params":["0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","symbol()"],"raw_result":"Some(\"CRCL\")","result_hash":"349ec607fad735855e568bfbe99bd0638807670884c320fa4b454e212fa29156","slot":null},{"block":null,"method":"eth_call","params":["0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","balanceOf","0x654E4143e82a5824445Ade0824351C2A9ACD95a8"],"raw_result":"Some(\"13714493044418658911558\")","result_hash":"981365cac268c1a1477b2da78c7eefed38ae14368be9ba71bbb2c9c0fc8abae0","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(\"683662524812848\")","result_hash":"8620da09856e735a919b324b7f40e64058937062508d6640d23c3698e6bfbd82","slot":null},{"block":null,"method":"eth_call","params":["0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","symbol()"],"raw_result":"Some(\"CRCL\")","result_hash":"349ec607fad735855e568bfbe99bd0638807670884c320fa4b454e212fa29156","slot":null},{"block":null,"method":"eth_call","params":["0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","name()"],"raw_result":"Some(\"Circle Internet Group • Robinhood Token\")","result_hash":"981b0dd56bfb652f6f07df42d6221edfeb31fb4e45723bb43a3ddfd1ee579a91","slot":null},{"block":null,"method":"eth_call","params":["0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","decimals()"],"raw_result":"None","result_hash":"f2953d2931e36d0c55640f51865f8394ebe52194765d04e521017232558f871c","slot":null},{"block":null,"method":"eth_call","params":["0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","totalSupply()"],"raw_result":"Some(\"61610160020000000000000\")","result_hash":"bf413334da577b0537bc6cf9da1d50083c0254d7290fca8418265ba91988ebdc","slot":null},{"block":null,"method":"eth_call","params":["0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","uiMultiplier()"],"raw_result":"1000000000000000000","result_hash":"46754a2491051f216577f1b9f19516f9be1a28c62f023dcbabd8c5317cdefe4b","slot":null},{"block":null,"method":"eth_getCode","params":["0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0xdF0992E440dD0be65BD8439b609d6D4366bf1CB5","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-30T00:37:24Z","name":"Circle Internet Group","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"CRCL"},"registry_hash":"5524ad353114ce82e4459bdb0533016e63f15d54f628b91498b20cf2b964d0de","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x654E4143e82a5824445Ade0824351C2A9ACD95a8","ticker":"CRCL","verdict":{"Verified":{"issuer":"Robinhood","ticker":"CRCL"}},"version":1}

Signature

GNCuuqhtrrBe1Nuhl2EO+jhIojycLWm7KrRoMbuAMGGLkiTlW1auj0/4IMC9OcewusLFON3A41drBvgbbCLgDQ==

API call

GET /api/attest/42ed8f458a29d8ecaad64d6475ac13f24e21e38c46513826bef6f46db6072444

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.