FIG/USDG

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":76128194,"chain":"RobinhoodChain","checked_at":"2026-09-30T01:37:44Z","dev":false,"expires_at":"2026-10-01T01:37:44Z","issuer":"Robinhood","pool":{"base":{"address":"0x41F4267525a8AFf329540eF24fD83d9044758B33","balance":"5966256974364309839102","decimals":18,"symbol":"FIG"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0xca5904C0a9d42F0Ec1Bf760FDf779907877144fD","quote":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"26006184581","decimals":6,"symbol":"USDG"}},"quote_share_of_supply":0.5082807910145107,"reads":[{"block":null,"method":"eth_getCode","params":["0xca5904C0a9d42F0Ec1Bf760FDf779907877144fD","latest"],"result_hash":"361eca9ca19c202387acaa1f3d19b4c2c1c8fdc03ea0ff6dd8b4e7a0f959198d","slot":null},{"block":76128194,"method":"eth_blockNumber","params":[],"result_hash":"92d4cc2b5e986a6672205dbdd09f65f1fba3a78f7d9a1eb1b0e90217b72a218b","slot":null},{"block":null,"method":"eth_call","params":["0xca5904C0a9d42F0Ec1Bf760FDf779907877144fD","token0()"],"raw_result":"0x41f4267525a8aff329540ef24fd83d9044758b33","result_hash":"e113081d825c122116dbeeb41135d3379e77f890c8c003fa7956af39cc6141ff","slot":null},{"block":null,"method":"eth_call","params":["0xca5904C0a9d42F0Ec1Bf760FDf779907877144fD","token1()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0xca5904C0a9d42F0Ec1Bf760FDf779907877144fD","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xca5904C0a9d42F0Ec1Bf760FDf779907877144fD","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xca5904C0a9d42F0Ec1Bf760FDf779907877144fD","factory()"],"raw_result":"Some(0x1f7d7550b1b028f7571e69a784071f0205fd2efa)","result_hash":"3a5325de1b5dc50662a9e2ec44d8428ded4306d2bd46195f62299474690e30aa","slot":null},{"block":null,"method":"eth_call","params":["0x41F4267525a8AFf329540eF24fD83d9044758B33","symbol()"],"raw_result":"Some(\"FIG\")","result_hash":"ceeee94acf737f07ab53f84ef97150272821442fdc7c0bdeae5a79338a9cc13f","slot":null},{"block":null,"method":"eth_call","params":["0x41F4267525a8AFf329540eF24fD83d9044758B33","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x41F4267525a8AFf329540eF24fD83d9044758B33","balanceOf","0xca5904C0a9d42F0Ec1Bf760FDf779907877144fD"],"raw_result":"Some(\"5966256974364309839102\")","result_hash":"d647ad7c04a776de3345443a3a50fbf51ec1f8c480e784654aa29a426a4c585e","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","0xca5904C0a9d42F0Ec1Bf760FDf779907877144fD"],"raw_result":"Some(\"26006184581\")","result_hash":"b7afd1e561233579d6a5e8883fcad89a8f01de21d2b6e0fc7f97b258075f6714","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(\"684206116727748\")","result_hash":"c28c2840d974e7edbc2a78b90480774f945654809c745dedb1dcb4e21aaea62f","slot":null},{"block":null,"method":"eth_call","params":["0x41F4267525a8AFf329540eF24fD83d9044758B33","symbol()"],"raw_result":"Some(\"FIG\")","result_hash":"ceeee94acf737f07ab53f84ef97150272821442fdc7c0bdeae5a79338a9cc13f","slot":null},{"block":null,"method":"eth_call","params":["0x41F4267525a8AFf329540eF24fD83d9044758B33","name()"],"raw_result":"Some(\"Figma • Robinhood Token\")","result_hash":"62d7b14ff618b394035aeb27b562fe0d82bb3afcae4f69683ae309e4e62132a1","slot":null},{"block":null,"method":"eth_call","params":["0x41F4267525a8AFf329540eF24fD83d9044758B33","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x41F4267525a8AFf329540eF24fD83d9044758B33","totalSupply()"],"raw_result":"Some(\"11738112240000000000000\")","result_hash":"dc8ed754a095b0a2c04f12a070a384a8fc7f64e11c49b59bc0373c1cb93bf2aa","slot":null},{"block":null,"method":"eth_call","params":["0x41F4267525a8AFf329540eF24fD83d9044758B33","uiMultiplier()"],"raw_result":"1000000000000000000","result_hash":"46754a2491051f216577f1b9f19516f9be1a28c62f023dcbabd8c5317cdefe4b","slot":null},{"block":null,"method":"eth_getCode","params":["0x41F4267525a8AFf329540eF24fD83d9044758B33","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x41F4267525a8AFf329540eF24fD83d9044758B33","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0x41F4267525a8AFf329540eF24fD83d9044758B33","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-30T01:37:24Z","name":"Figma","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"FIG"},"registry_hash":"abef97b3ad2938b7051778363de6a051cdf8518e229b4f37504bec93f04b4868","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xca5904C0a9d42F0Ec1Bf760FDf779907877144fD","ticker":"FIG","verdict":{"Verified":{"issuer":"Robinhood","ticker":"FIG"}},"version":1}

Signature

O+tbToDof5bh+ErEtc84f+4X0r45KOBaUEJRuOkjj2gt7w2BVJPihV5rLpF+/lstrbxt81KaGcF+kXh8N1a2Aw==

API call

GET /api/attest/8cdb7df63f30e60481d39e41c5a5030b0d37e3b041d5e5af40fb158aa6e44252

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.