BA/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":76080412,"chain":"RobinhoodChain","checked_at":"2026-09-30T00:17:46Z","dev":false,"expires_at":"2026-10-01T00:17:46Z","issuer":"Robinhood","pool":{"base":{"address":"0x4D21483a44Bf67a86b77E3dA301411880797D452","balance":"424236779866869655648","decimals":18,"symbol":"BA"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0xc6517047b189c72D3bAa9eF37D1d28F27a63638a","quote":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"30124629945","decimals":6,"symbol":"USDG"}},"quote_share_of_supply":0.3803906860662873,"reads":[{"block":null,"method":"eth_getCode","params":["0xc6517047b189c72D3bAa9eF37D1d28F27a63638a","latest"],"result_hash":"f469830021588b4e838d357335d361f70fb45a631c481859e616296692b08733","slot":null},{"block":76080412,"method":"eth_blockNumber","params":[],"result_hash":"da9306be3c5a559457bca92413475e49fc4f6519f7dbfe028e1cb6ac48a5e0e3","slot":null},{"block":null,"method":"eth_call","params":["0xc6517047b189c72D3bAa9eF37D1d28F27a63638a","token0()"],"raw_result":"0x4d21483a44bf67a86b77e3da301411880797d452","result_hash":"ed4ed0c4c7658e5ccdac565ef664e7b35e951f1e6cc02a9c260936f03ee7045a","slot":null},{"block":null,"method":"eth_call","params":["0xc6517047b189c72D3bAa9eF37D1d28F27a63638a","token1()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0xc6517047b189c72D3bAa9eF37D1d28F27a63638a","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xc6517047b189c72D3bAa9eF37D1d28F27a63638a","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xc6517047b189c72D3bAa9eF37D1d28F27a63638a","factory()"],"raw_result":"Some(0x1f7d7550b1b028f7571e69a784071f0205fd2efa)","result_hash":"3a5325de1b5dc50662a9e2ec44d8428ded4306d2bd46195f62299474690e30aa","slot":null},{"block":null,"method":"eth_call","params":["0x4D21483a44Bf67a86b77E3dA301411880797D452","symbol()"],"raw_result":"Some(\"BA\")","result_hash":"fa8ab20a23a6c36492dc9dd23cb660bc3ec97b040322349e33351005d3342efa","slot":null},{"block":null,"method":"eth_call","params":["0x4D21483a44Bf67a86b77E3dA301411880797D452","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x4D21483a44Bf67a86b77E3dA301411880797D452","balanceOf","0xc6517047b189c72D3bAa9eF37D1d28F27a63638a"],"raw_result":"Some(\"424236779866869655648\")","result_hash":"1dc80edf12ce196200b7012b7a5e65f5bbab7d79a4e13be7592d448718c7d310","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","0xc6517047b189c72D3bAa9eF37D1d28F27a63638a"],"raw_result":"Some(\"30124629945\")","result_hash":"a350023187211de47a1c70791a9ea2435cf03832b87a112b191748a97a6c57c7","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":"829ff9097d60890a1731f321e9795ca061307fa3ddead598dc9dc2f6b6bfda59","slot":null},{"block":null,"method":"eth_call","params":["0x4D21483a44Bf67a86b77E3dA301411880797D452","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x4D21483a44Bf67a86b77E3dA301411880797D452","totalSupply()"],"raw_result":"Some(\"1115265950000000000000\")","result_hash":"67899fcf1498e708769cf8f7a0f042601d508f44afb3a326e8cb8d93680d652d","slot":null},{"block":null,"method":"eth_call","params":["0x4D21483a44Bf67a86b77E3dA301411880797D452","uiMultiplier()"],"raw_result":"1000000000000000000","result_hash":"46754a2491051f216577f1b9f19516f9be1a28c62f023dcbabd8c5317cdefe4b","slot":null},{"block":null,"method":"eth_getCode","params":["0x4D21483a44Bf67a86b77E3dA301411880797D452","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x4D21483a44Bf67a86b77E3dA301411880797D452","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0x4D21483a44Bf67a86b77E3dA301411880797D452","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-29T23:37:24Z","name":"Boeing","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"BA"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xc6517047b189c72D3bAa9eF37D1d28F27a63638a","ticker":"BA","verdict":{"Verified":{"issuer":"Robinhood","ticker":"BA"}},"version":1}

Signature

j/0hN+mqLGFL8UINTfoYej9lV3N3l13rFYwNDs4uQTJElO6MDzpi8TRnvY5zNHnlUpnMwpGbI9QffBgKiBY6DA==

API call

GET /api/attest/208474723954d32c914dbe891da361a4177c10fed949cc0879e119aeda31139a

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.