GOOGL/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":76030201,"chain":"RobinhoodChain","checked_at":"2026-09-29T22:53:55Z","dev":false,"expires_at":"2026-09-30T22:53:55Z","issuer":"Robinhood","pool":{"base":{"address":"0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","balance":"1311097579142695898265","decimals":18,"symbol":"GOOGL"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0x34D0dC122CF9A8Eb296fC5e0D3A233625D7d19b7","quote":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"471208331712","decimals":6,"symbol":"USDG"}},"quote_share_of_supply":0.06838768714675793,"reads":[{"block":null,"method":"eth_getCode","params":["0x34D0dC122CF9A8Eb296fC5e0D3A233625D7d19b7","latest"],"result_hash":"984b4a7584b9c7f26a8cfd9e9e55e237cc05dffd05523239d7d7dd6c3ab98e7f","slot":null},{"block":76030201,"method":"eth_blockNumber","params":[],"result_hash":"df4c33875fab6746717e78862ff37b091b5151587ee82389188c80531d87c269","slot":null},{"block":null,"method":"eth_call","params":["0x34D0dC122CF9A8Eb296fC5e0D3A233625D7d19b7","token0()"],"raw_result":"0x2e0847e8910a9732eb3fb1bb4b70a580adad4fe3","result_hash":"6730254f3e1e325428b4637c38ccbcdddb3541a1abcbfe80eef71cf008b45022","slot":null},{"block":null,"method":"eth_call","params":["0x34D0dC122CF9A8Eb296fC5e0D3A233625D7d19b7","token1()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0x34D0dC122CF9A8Eb296fC5e0D3A233625D7d19b7","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0x34D0dC122CF9A8Eb296fC5e0D3A233625D7d19b7","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x34D0dC122CF9A8Eb296fC5e0D3A233625D7d19b7","factory()"],"raw_result":"Some(0x1f7d7550b1b028f7571e69a784071f0205fd2efa)","result_hash":"3a5325de1b5dc50662a9e2ec44d8428ded4306d2bd46195f62299474690e30aa","slot":null},{"block":null,"method":"eth_call","params":["0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","symbol()"],"raw_result":"Some(\"GOOGL\")","result_hash":"a2b75dd5b4415a9dfebb356f71f032dc5cf92185661297a13820f4bc2960bec1","slot":null},{"block":null,"method":"eth_call","params":["0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","balanceOf","0x34D0dC122CF9A8Eb296fC5e0D3A233625D7d19b7"],"raw_result":"Some(\"1311097579142695898265\")","result_hash":"a9a3b2bdf3b9dec541d4e9b56960833f3a620563ccc4bf9c38bfb51972cd165a","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","0x34D0dC122CF9A8Eb296fC5e0D3A233625D7d19b7"],"raw_result":"Some(\"471208331712\")","result_hash":"e913b1db8f07c1a63fec344315bbf413cdd8e920128dca201caf9849f9e1ebd5","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(\"683754660025993\")","result_hash":"0e4bacc4bdcf383c2fae40fbb3d330d8ebf51d9ae7e838f6db679ff12c3f7419","slot":null},{"block":null,"method":"eth_call","params":["0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","symbol()"],"raw_result":"Some(\"GOOGL\")","result_hash":"a2b75dd5b4415a9dfebb356f71f032dc5cf92185661297a13820f4bc2960bec1","slot":null},{"block":null,"method":"eth_call","params":["0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","name()"],"raw_result":"Some(\"Alphabet Class A • Robinhood Token\")","result_hash":"5ac77fdd5d1a82ba2af3bcc8f5a74731c156f801f70079f3634ac7d2744251dc","slot":null},{"block":null,"method":"eth_call","params":["0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","totalSupply()"],"raw_result":"Some(\"19171544379460000000000\")","result_hash":"4cc9565b2a119fb7f1f326a47db57026d098d8d450bd9a9c36c96d5c45771889","slot":null},{"block":null,"method":"eth_call","params":["0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","uiMultiplier()"],"raw_result":"1000193924414112587","result_hash":"2c4b00ace73144a254e8c418fb76b89c254f0b8bc34abc45491eff8d4ac690ff","slot":null},{"block":null,"method":"eth_getCode","params":["0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0x2e0847E8910a9732eB3fb1bb4b70a580ADAD4FE3","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-29T22:37:24Z","name":"Alphabet Class A","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"GOOGL"},"registry_hash":"d6272adf0af69a1c2c18f6a79db79616f69be8189283a420b5ba6e572aa0e4ad","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x34D0dC122CF9A8Eb296fC5e0D3A233625D7d19b7","ticker":"GOOGL","verdict":{"Verified":{"issuer":"Robinhood","ticker":"GOOGL"}},"version":1}

Signature

U0gxX0YHKlyqIB1id5qrYoiBgtbkVG8nSHOps3Nwthamn1z8tg0kEVuD5CFjXU51iK1M2YL57i/sP6OyPu3jDQ==

API call

GET /api/attest/c52b740e261e92cdcfed3b92b478fbbfc92b5fe1db80333cbae374adc549bd54

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.