USDG/MRVL

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":76083371,"chain":"RobinhoodChain","checked_at":"2026-09-30T00:22:42Z","dev":false,"expires_at":"2026-10-01T00:22:42Z","issuer":"Robinhood","pool":{"base":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"19941844012","decimals":6,"symbol":"USDG"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0x06cc0b96Be1fa1d754CE2e1228F5d8c616F795b0","quote":{"address":"0x62fd0668e10D8B72339BE2DCF7643001688ff13B","balance":"13716637459187782597","decimals":18,"symbol":"MRVL"}},"quote_share_of_supply":0.011749743649475848,"reads":[{"block":null,"method":"eth_getCode","params":["0x06cc0b96Be1fa1d754CE2e1228F5d8c616F795b0","latest"],"result_hash":"1652df01a26d975f41946506b64ddc3e7ea4305649ec030185e4a84b3f4ca119","slot":null},{"block":76083371,"method":"eth_blockNumber","params":[],"result_hash":"7f8271c143035ca34b1cfbf26c8fec08bebe68e2c73b5b27d45ef947f99a6918","slot":null},{"block":null,"method":"eth_call","params":["0x06cc0b96Be1fa1d754CE2e1228F5d8c616F795b0","token0()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0x06cc0b96Be1fa1d754CE2e1228F5d8c616F795b0","token1()"],"raw_result":"0x62fd0668e10d8b72339be2dcf7643001688ff13b","result_hash":"c5d3901bf67bd40f94b01d08f6fbbfdf8950acc2d78cfb8957df167847adfe6e","slot":null},{"block":null,"method":"eth_call","params":["0x06cc0b96Be1fa1d754CE2e1228F5d8c616F795b0","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0x06cc0b96Be1fa1d754CE2e1228F5d8c616F795b0","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x06cc0b96Be1fa1d754CE2e1228F5d8c616F795b0","factory()"],"raw_result":"Some(0x1f7d7550b1b028f7571e69a784071f0205fd2efa)","result_hash":"3a5325de1b5dc50662a9e2ec44d8428ded4306d2bd46195f62299474690e30aa","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","0x06cc0b96Be1fa1d754CE2e1228F5d8c616F795b0"],"raw_result":"Some(\"19941844012\")","result_hash":"b37fef69ce7f447c37a3994e1524635c8e2bf6dba10f24e21106db2b61ff8376","slot":null},{"block":null,"method":"eth_call","params":["0x62fd0668e10D8B72339BE2DCF7643001688ff13B","symbol()"],"raw_result":"Some(\"MRVL\")","result_hash":"c2654a7f31d7b7b075d00545e0a9cf0e99c87c9a8c7a91d2fce81c685c463692","slot":null},{"block":null,"method":"eth_call","params":["0x62fd0668e10D8B72339BE2DCF7643001688ff13B","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x62fd0668e10D8B72339BE2DCF7643001688ff13B","balanceOf","0x06cc0b96Be1fa1d754CE2e1228F5d8c616F795b0"],"raw_result":"Some(\"13716637459187782597\")","result_hash":"abbd9e9d8b268d7a9d69618c2db8c063cb4c1926952dfed87ad69cf2f18836a6","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(\"683063373838188\")","result_hash":"f355ca7871776babd47deac76a9344dbb19466942678fa7974aa77db6582652a","slot":null},{"block":null,"method":"eth_call","params":["0x62fd0668e10D8B72339BE2DCF7643001688ff13B","symbol()"],"raw_result":"Some(\"MRVL\")","result_hash":"c2654a7f31d7b7b075d00545e0a9cf0e99c87c9a8c7a91d2fce81c685c463692","slot":null},{"block":null,"method":"eth_call","params":["0x62fd0668e10D8B72339BE2DCF7643001688ff13B","name()"],"raw_result":"Some(\"Marvell Technology • Robinhood Token\")","result_hash":"21ef00a1a171be75ec5b72194bea9eb0fdc26fa0d124d88be11a0e89857b21ee","slot":null},{"block":null,"method":"eth_call","params":["0x62fd0668e10D8B72339BE2DCF7643001688ff13B","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x62fd0668e10D8B72339BE2DCF7643001688ff13B","totalSupply()"],"raw_result":"Some(\"1167398870000000000000\")","result_hash":"799adbbb5a9be4c1a6d09b8942acadbcd0e7240198352096bddcae3a873cbd53","slot":null},{"block":null,"method":"eth_call","params":["0x62fd0668e10D8B72339BE2DCF7643001688ff13B","uiMultiplier()"],"raw_result":"1000000000000000000","result_hash":"46754a2491051f216577f1b9f19516f9be1a28c62f023dcbabd8c5317cdefe4b","slot":null},{"block":null,"method":"eth_getCode","params":["0x62fd0668e10D8B72339BE2DCF7643001688ff13B","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x62fd0668e10D8B72339BE2DCF7643001688ff13B","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0x62fd0668e10D8B72339BE2DCF7643001688ff13B","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-29T23:37:24Z","name":"Marvell Technology","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"MRVL"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x06cc0b96Be1fa1d754CE2e1228F5d8c616F795b0","ticker":"MRVL","verdict":{"Verified":{"issuer":"Robinhood","ticker":"MRVL"}},"version":1}

Signature

G4uN41wsLags+LqKv5uoawWoKZTa+RDW0HsEqj+agIt+H/vOCbDZxQzznfKOQupAfpsnI6XNwVkRsvQcz1jSAA==

API call

GET /api/attest/61279e8eba5259b3f72729a2325a3d33ed8339407820f1cdb01713ca66d195f4

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.