ASML/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":76133399,"chain":"RobinhoodChain","checked_at":"2026-09-30T01:46:31Z","dev":false,"expires_at":"2026-10-01T01:46:31Z","issuer":"Robinhood","pool":{"base":{"address":"0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","balance":"1167955087356588737","decimals":18,"symbol":"ASML"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0xedb22516B14Eb2d1C86927Db373B0E8bF70F5cD1","quote":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"27834974466","decimals":6,"symbol":"USDG"}},"quote_share_of_supply":0.013403238008364725,"reads":[{"block":null,"method":"eth_getCode","params":["0xedb22516B14Eb2d1C86927Db373B0E8bF70F5cD1","latest"],"result_hash":"a305b60a00b344ca8ea15046310a74d75961b3e504ef08dc7b11a04e06d919ca","slot":null},{"block":76133399,"method":"eth_blockNumber","params":[],"result_hash":"d2de2af93055c4ef36098b604d9ba6c5412cc84c1dcdc35e52cfa3607e97e2aa","slot":null},{"block":null,"method":"eth_call","params":["0xedb22516B14Eb2d1C86927Db373B0E8bF70F5cD1","token0()"],"raw_result":"0x47f93d52cbec7c6d2cfc080e154002370a60daea","result_hash":"2692a02efa07e495ab3f4ce7b5371d710b0049591e7d8f1882fc98d8da8c5183","slot":null},{"block":null,"method":"eth_call","params":["0xedb22516B14Eb2d1C86927Db373B0E8bF70F5cD1","token1()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0xedb22516B14Eb2d1C86927Db373B0E8bF70F5cD1","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xedb22516B14Eb2d1C86927Db373B0E8bF70F5cD1","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xedb22516B14Eb2d1C86927Db373B0E8bF70F5cD1","factory()"],"raw_result":"Some(0x1f7d7550b1b028f7571e69a784071f0205fd2efa)","result_hash":"3a5325de1b5dc50662a9e2ec44d8428ded4306d2bd46195f62299474690e30aa","slot":null},{"block":null,"method":"eth_call","params":["0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","symbol()"],"raw_result":"Some(\"ASML\")","result_hash":"921a8037ea96a7ac503b4111856d3f637cf81cbd7f849320d5d0ec167e8e0807","slot":null},{"block":null,"method":"eth_call","params":["0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","balanceOf","0xedb22516B14Eb2d1C86927Db373B0E8bF70F5cD1"],"raw_result":"Some(\"1167955087356588737\")","result_hash":"0b4d58fe1f9a2cb6d8e7c37dfd34e0468ae198fd75c2e8beeee8b10a3ed59d1a","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","0xedb22516B14Eb2d1C86927Db373B0E8bF70F5cD1"],"raw_result":"Some(\"27834974466\")","result_hash":"618acfd7910c8903d5b9ecce900a85ace2e1b69f60cc4effe04c1aaf2aa75563","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(\"684206116727748\")","result_hash":"c28c2840d974e7edbc2a78b90480774f945654809c745dedb1dcb4e21aaea62f","slot":null},{"block":null,"method":"eth_call","params":["0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","symbol()"],"raw_result":"Some(\"ASML\")","result_hash":"921a8037ea96a7ac503b4111856d3f637cf81cbd7f849320d5d0ec167e8e0807","slot":null},{"block":null,"method":"eth_call","params":["0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","name()"],"raw_result":"Some(\"ASML Holding NV • Robinhood Token\")","result_hash":"b2159f95e383a27028990ac3c94a124b0f25a970c3438cdadfa46ce7019f076c","slot":null},{"block":null,"method":"eth_call","params":["0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","totalSupply()"],"raw_result":"Some(\"87139770750000000000\")","result_hash":"cd74ad8bda1e2af293212bdd388c18c9ea8c355a2f9033c2399cd8397e38b8c7","slot":null},{"block":null,"method":"eth_call","params":["0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","uiMultiplier()"],"raw_result":"1000101323251417769","result_hash":"23149dbee863d5b5a19ca7bb986da982f323eba41810a98ab204de9eb6105729","slot":null},{"block":null,"method":"eth_getCode","params":["0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0x47F93d52cBeC7C6D2CfC080e154002370a60dAEA","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-30T01:37:24Z","name":"ASML Holding NV","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"ASML"},"registry_hash":"abef97b3ad2938b7051778363de6a051cdf8518e229b4f37504bec93f04b4868","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xedb22516B14Eb2d1C86927Db373B0E8bF70F5cD1","ticker":"ASML","verdict":{"Verified":{"issuer":"Robinhood","ticker":"ASML"}},"version":1}

Signature

TmhkpN4fQRqY/xayisiRkSqaePd9vEmu2/k5ER18sRmEPf5uJBjtyKK/67Hy2lIj1W/bETYkca3rMtge9mYBBA==

API call

GET /api/attest/e6dec5e3f044666a816307c7308c997fed719668d1fa3d87bb715627f176a14e

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.