USDG/UPS

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":76081698,"chain":"RobinhoodChain","checked_at":"2026-09-30T00:20:12Z","dev":false,"expires_at":"2026-10-01T00:20:13Z","issuer":"Robinhood","pool":{"base":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"21288342143","decimals":6,"symbol":"USDG"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0x3Ab74C45DceCC6A62898204Dd42143a816B44CB1","quote":{"address":"0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","balance":"570954860251970100376","decimals":18,"symbol":"UPS"}},"quote_share_of_supply":0.2227622064433686,"reads":[{"block":null,"method":"eth_getCode","params":["0x3Ab74C45DceCC6A62898204Dd42143a816B44CB1","latest"],"result_hash":"df22f236a9f8b4e0fe4addaa771d553295718e4c3a4b26b351863be3158fe5d4","slot":null},{"block":76081698,"method":"eth_blockNumber","params":[],"result_hash":"ddedbe9de1f3071387420d03ff1fcfec1ac851aee54c5a94e10d3ae579a1b621","slot":null},{"block":null,"method":"eth_call","params":["0x3Ab74C45DceCC6A62898204Dd42143a816B44CB1","token0()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0x3Ab74C45DceCC6A62898204Dd42143a816B44CB1","token1()"],"raw_result":"0xf23250dac154d05bb671cb0d0ebef3c635c79ce2","result_hash":"276a628e6543a03e8b6cdef1e19051b87a3439d9f1b5f18e2e7a50a8393323cd","slot":null},{"block":null,"method":"eth_call","params":["0x3Ab74C45DceCC6A62898204Dd42143a816B44CB1","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0x3Ab74C45DceCC6A62898204Dd42143a816B44CB1","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x3Ab74C45DceCC6A62898204Dd42143a816B44CB1","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","0x3Ab74C45DceCC6A62898204Dd42143a816B44CB1"],"raw_result":"Some(\"21288342143\")","result_hash":"6921bf7c012b00a668f705d4c0365e261815fe6b42f75d1925f964f718e7f2c3","slot":null},{"block":null,"method":"eth_call","params":["0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","symbol()"],"raw_result":"Some(\"UPS\")","result_hash":"49f09aff546981df867f7141521a2796d2cf436b8926831be6de58a06aa1a4e9","slot":null},{"block":null,"method":"eth_call","params":["0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","balanceOf","0x3Ab74C45DceCC6A62898204Dd42143a816B44CB1"],"raw_result":"Some(\"570954860251970100376\")","result_hash":"f750b900dbf6e6c2a9fed48b3d68a5514abadc29955d4a64c415e0018a16d604","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":["0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","symbol()"],"raw_result":"Some(\"UPS\")","result_hash":"49f09aff546981df867f7141521a2796d2cf436b8926831be6de58a06aa1a4e9","slot":null},{"block":null,"method":"eth_call","params":["0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","name()"],"raw_result":"Some(\"UPS • Robinhood Token\")","result_hash":"a4574a9dac32d19b16ce916cc89d5d05adcabb6241c4fcd627c532c5f4ace41b","slot":null},{"block":null,"method":"eth_call","params":["0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","totalSupply()"],"raw_result":"Some(\"2563068795950000000000\")","result_hash":"e66cb53d2c561d44b4d4444adf58f3fa58993c2e056227ffda38cd186413d044","slot":null},{"block":null,"method":"eth_call","params":["0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","uiMultiplier()"],"raw_result":"1002208724969205741","result_hash":"ea406cc49c79fc37e4b32fb00894393503cd98712839632911cbea552b7c074f","slot":null},{"block":null,"method":"eth_getCode","params":["0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0xf23250dac154D05Bb671CB0d0eBEf3c635c79CE2","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-29T23:37:24Z","name":"UPS","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"UPS"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x3Ab74C45DceCC6A62898204Dd42143a816B44CB1","ticker":"UPS","verdict":{"Verified":{"issuer":"Robinhood","ticker":"UPS"}},"version":1}

Signature

v6sy6sT1VHdjtRzsKYwm5mVSZN+yuM0uddlaDbwbekU+rpQ/VaYEuwv8jR0PE5rL/75ESBU1E+hlUJL+zDJ7DQ==

API call

GET /api/attest/0fc8a7b18258704b6b9d9bba798387f64c9674e301dea28869b9973f467cbcf5

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.