RDDT/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":76080153,"chain":"RobinhoodChain","checked_at":"2026-09-30T00:17:20Z","dev":false,"expires_at":"2026-10-01T00:17:20Z","issuer":"Robinhood","pool":{"base":{"address":"0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","balance":"6165543130966529701173","decimals":18,"symbol":"RDDT"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0xa8744E76aED23B05F0126335E7BD38f7935D19fe","quote":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"120190024297","decimals":6,"symbol":"USDG"}},"quote_share_of_supply":0.34458841432488413,"reads":[{"block":null,"method":"eth_getCode","params":["0xa8744E76aED23B05F0126335E7BD38f7935D19fe","latest"],"result_hash":"8302d4cce3245c9b8aa57d151283febbd2aed1440c27ad57570f620e74c31d85","slot":null},{"block":76080153,"method":"eth_blockNumber","params":[],"result_hash":"c0de99a2abce2d67af39e4c4b343622ea6cb45be1b1be753493e7d3ecfa12439","slot":null},{"block":null,"method":"eth_call","params":["0xa8744E76aED23B05F0126335E7BD38f7935D19fe","token0()"],"raw_result":"0x05b37fb53a299a1b874a619e1c4c404d52c36f4c","result_hash":"3f79fdaae9784c8213b75830492540bb5c54290857aa3c883e02dd038be59468","slot":null},{"block":null,"method":"eth_call","params":["0xa8744E76aED23B05F0126335E7BD38f7935D19fe","token1()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0xa8744E76aED23B05F0126335E7BD38f7935D19fe","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xa8744E76aED23B05F0126335E7BD38f7935D19fe","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xa8744E76aED23B05F0126335E7BD38f7935D19fe","factory()"],"raw_result":"Some(0x1f7d7550b1b028f7571e69a784071f0205fd2efa)","result_hash":"3a5325de1b5dc50662a9e2ec44d8428ded4306d2bd46195f62299474690e30aa","slot":null},{"block":null,"method":"eth_call","params":["0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","symbol()"],"raw_result":"Some(\"RDDT\")","result_hash":"69c4ad830f110c82b8a8b207f5d89ec84a67804e1a60de873db8bfa0c3b44d9a","slot":null},{"block":null,"method":"eth_call","params":["0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","balanceOf","0xa8744E76aED23B05F0126335E7BD38f7935D19fe"],"raw_result":"Some(\"6165543130966529701173\")","result_hash":"88c543fac6292ccf93788cf52b5b74757cd4999106203b594a01828ee1443253","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","0xa8744E76aED23B05F0126335E7BD38f7935D19fe"],"raw_result":"Some(\"120190024297\")","result_hash":"31cd8586191e371f12529b383da7580cde1d3ffda16789358a4895d281120d70","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(\"683057258909461\")","result_hash":"3142e10dc87a1fc9e6703ce3e2e4371004f1cef266d780011a30464ee2ebb354","slot":null},{"block":null,"method":"eth_call","params":["0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","symbol()"],"raw_result":"Some(\"RDDT\")","result_hash":"69c4ad830f110c82b8a8b207f5d89ec84a67804e1a60de873db8bfa0c3b44d9a","slot":null},{"block":null,"method":"eth_call","params":["0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","name()"],"raw_result":"Some(\"Reddit • Robinhood Token\")","result_hash":"45ebe8a0e8f57365e07ef5de41adc8fbb1fcfd33115cd7c998591602c72a1c83","slot":null},{"block":null,"method":"eth_call","params":["0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","totalSupply()"],"raw_result":"Some(\"17892485280000000000000\")","result_hash":"9da398cdfc9fe47a8624f155452f9b2478017d72da4dee082827fdadb50da049","slot":null},{"block":null,"method":"eth_call","params":["0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","uiMultiplier()"],"raw_result":"1000000000000000000","result_hash":"46754a2491051f216577f1b9f19516f9be1a28c62f023dcbabd8c5317cdefe4b","slot":null},{"block":null,"method":"eth_getCode","params":["0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0x05b37Fb53A299a1b874A619e1c4C404D52C36F4C","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-29T23:37:24Z","name":"Reddit","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"RDDT"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xa8744E76aED23B05F0126335E7BD38f7935D19fe","ticker":"RDDT","verdict":{"Verified":{"issuer":"Robinhood","ticker":"RDDT"}},"version":1}

Signature

EBSIUxtEjFOq7LiTSn4yMhf03solkH8U4tcbXCPBYvEa0HhVOepkKHD7Hp4qYNoVgUvUf7sN0bbtP7XxSHikCw==

API call

GET /api/attest/04fedb92ac2b5b11da300af17d592a220f1756b7ef596684431333bd93551937

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.