Does RIVN / USDG match its issuer's published contract?

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":91899414,"chain":"robinhood","checked_at":"2026-10-18T16:08:32Z","dev":false,"expires_at":"2026-10-19T16:08:32Z","issuer":"Robinhood","pool":{"base":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"13559108349","decimals":6,"symbol":"USDG"},"chain":"robinhood","dex":"uniswap-v3","pool":"0xb30A75B200D98A600a3766869344928E35823E23","quote":{"address":"0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","balance":"2222850986323666160146","decimals":18,"symbol":"RIVN"}},"quote_share_of_supply":0.07139791561738941,"reads":[{"block":91899414,"method":"eth_blockNumber","params":[],"result_hash":"91e49acf689520c010a85c0889cd7a7618956e1d045e738d39fb96015404aa86","slot":null},{"block":null,"method":"eth_call","params":["0xb30A75B200D98A600a3766869344928E35823E23","token0()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0xb30A75B200D98A600a3766869344928E35823E23","token1()"],"raw_result":"0xb1bf26c1d20ff267a4f93550d1e0d06ac40a114b","result_hash":"8cc71eefb6fd1158d079738d8e5716de69c271abba27c28ce31a2f4b28516a7e","slot":null},{"block":null,"method":"eth_call","params":["0xb30A75B200D98A600a3766869344928E35823E23","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xb30A75B200D98A600a3766869344928E35823E23","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xb30A75B200D98A600a3766869344928E35823E23","factory()"],"raw_result":"0x1f7d7550b1b028f7571e69a784071f0205fd2efa","result_hash":"bf7614e6e838b22e4363dfcb3022451641875235ca13e64f8d2d8c3334ff85f3","slot":null},{"block":null,"method":"eth_call","params":["0xb30A75B200D98A600a3766869344928E35823E23","fee()"],"raw_result":"10000","result_hash":"328d48ab2376d2f42d3af5ba69086143c8f5fe883ed195a8280b2154a5711a33","slot":null},{"block":null,"method":"eth_call","params":["0x1f7d7550B1b028f7571E69A784071F0205FD2EfA","getPool","0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","0x2710"],"raw_result":"0xb30a75b200d98a600a3766869344928e35823e23","result_hash":"aaf3fd48a7ca48c613a51442be062852d98b62bc2aac43b6baf92bb566209fd3","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","0xb30A75B200D98A600a3766869344928E35823E23"],"raw_result":"Some(\"13559108349\")","result_hash":"d0c6c9fd527f7dcb3038f3e363f973e4dc00bee700b77a1fd1439e758e7268d6","slot":null},{"block":null,"method":"eth_call","params":["0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","symbol()"],"raw_result":"Some(\"RIVN\")","result_hash":"015277ada86f2613bca06b0273c268e8fb6d99d080facd9ad908352f946f6542","slot":null},{"block":null,"method":"eth_call","params":["0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","balanceOf","0xb30A75B200D98A600a3766869344928E35823E23"],"raw_result":"Some(\"2222850986323666160146\")","result_hash":"98bdd614b5215f6ad31514b78b0b149b76e878d5848f4f86abfa618a382a9ac9","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(\"696780276174599\")","result_hash":"c7ce061585956682a5202683b0b90c38301e136eef84dda80c269326a2d3ed55","slot":null},{"block":null,"method":"eth_call","params":["0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","symbol()"],"raw_result":"Some(\"RIVN\")","result_hash":"015277ada86f2613bca06b0273c268e8fb6d99d080facd9ad908352f946f6542","slot":null},{"block":null,"method":"eth_call","params":["0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","name()"],"raw_result":"Some(\"Rivian Automotive • Robinhood Token\")","result_hash":"86833e17829bd87e3227786adbc98af5a8424fa2cd5c5bd5e57e974346e13f2c","slot":null},{"block":null,"method":"eth_call","params":["0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","totalSupply()"],"raw_result":"Some(\"31133275630000000000000\")","result_hash":"93f03ddc3a98aa097a2481b074bcb3c507bc6edee509cf204132cdd9bb06ddd4","slot":null},{"block":null,"method":"eth_call","params":["0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","uiMultiplier()"],"raw_result":"1000000000000000000","result_hash":"46754a2491051f216577f1b9f19516f9be1a28c62f023dcbabd8c5317cdefe4b","slot":null},{"block":null,"method":"eth_getCode","params":["0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"robinhood","contract":"0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","decimals":18,"issuer":"Robinhood","last_checked":"2026-10-18T15:47:33Z","name":"Rivian Automotive","official_deployments":[{"address":"0xB1BF26c1D20ff267A4f93550d1E0d06ac40a114B","network":"Robinhood Chain"}],"source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"RIVN"},"registry_hash":"2bf13ff4020924ba1c74d8e732c3dd1609679a3b9a6dc8a796250beb0ae1b589","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xb30A75B200D98A600a3766869344928E35823E23","ticker":"RIVN","verdict":{"Verified":{"issuer":"Robinhood","ticker":"RIVN"}},"version":1}

Signature

SPwzFgcl39LCUKJg8wyUZ8EqEzlMFf77hzfplN4NNS5uFaK4zkIEPpUr2fqQUdpsKVu7u2tIhSAEGILQLel0DQ==

API call

GET /api/attest/8424b6e40c2ee50e5f77f71dcbacdc35dcc336e31864713d4ecbfd17baf47b22

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.