Does LITE / 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":92000821,"chain":"robinhood","checked_at":"2026-10-18T19:00:04Z","dev":false,"expires_at":"2026-10-19T19:00:04Z","issuer":"Robinhood","pool":{"base":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"11146780213","decimals":6,"symbol":"USDG"},"chain":"robinhood","dex":"ramses-v3","pool":"0xE9a9471633faF6C0cE15065e74D71a9A02867633","quote":{"address":"0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","balance":"21159006473758343491","decimals":18,"symbol":"LITE"}},"quote_share_of_supply":0.06735348742480102,"reads":[{"block":92000821,"method":"eth_blockNumber","params":[],"result_hash":"066d29cb57176e897468ce980ff39193c80891f996d4fd94437752a59eca60c8","slot":null},{"block":null,"method":"eth_call","params":["0xE9a9471633faF6C0cE15065e74D71a9A02867633","token0()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0xE9a9471633faF6C0cE15065e74D71a9A02867633","token1()"],"raw_result":"0x8ef20885f94e3d9bc7eb3080279188bd5ed7c08c","result_hash":"fcfb105c0cbda792c94ab4f536e06aeaebde451c93aedbb1c63ed4cdd36bac77","slot":null},{"block":null,"method":"eth_call","params":["0xE9a9471633faF6C0cE15065e74D71a9A02867633","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xE9a9471633faF6C0cE15065e74D71a9A02867633","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xE9a9471633faF6C0cE15065e74D71a9A02867633","factory()"],"raw_result":"0xe0c4ceb92d08ca985bb70fe0a22feb121a9854a8","result_hash":"3acd97ac868973fcda20afc787b251dff09968890029c0107e8fa1018dc5cca8","slot":null},{"block":null,"method":"eth_call","params":["0xE9a9471633faF6C0cE15065e74D71a9A02867633","tickSpacing()"],"raw_result":"200","result_hash":"cad9e1bcc89d0640e1379437b9c9a8b021e7411c515b53a15d89f8439dafedf0","slot":null},{"block":null,"method":"eth_call","params":["0xE0c4ceb92d08CA985bB70fe0a22fEb121A9854A8","getPool","0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","200"],"raw_result":"0xe9a9471633faf6c0ce15065e74d71a9a02867633","result_hash":"69cb2cb1af6d73cff77dc585b16523e819819966cfb95bcf2720f4ee28304340","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","0xE9a9471633faF6C0cE15065e74D71a9A02867633"],"raw_result":"Some(\"11146780213\")","result_hash":"99f29083b27ff648a45545f94b8eaf0f33f11b4383f68ea7f10afe60391772c9","slot":null},{"block":null,"method":"eth_call","params":["0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","symbol()"],"raw_result":"Some(\"LITE\")","result_hash":"b39e12d43f3b9f1d613a77c819548d72aebcdcf4a26082c44d96247114e8946b","slot":null},{"block":null,"method":"eth_call","params":["0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","balanceOf","0xE9a9471633faF6C0cE15065e74D71a9A02867633"],"raw_result":"Some(\"21159006473758343491\")","result_hash":"78d8fd6e3a8de9f9cb30a4ece946dd5274fdfcbd477645d76141097829e09efe","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(\"696496200347174\")","result_hash":"c89de63b57cbd2df29547c452103566aa72dd3f4abac92a6142add18e0bbbedd","slot":null},{"block":null,"method":"eth_call","params":["0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","symbol()"],"raw_result":"Some(\"LITE\")","result_hash":"b39e12d43f3b9f1d613a77c819548d72aebcdcf4a26082c44d96247114e8946b","slot":null},{"block":null,"method":"eth_call","params":["0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","name()"],"raw_result":"Some(\"Lumentum • Robinhood Token\")","result_hash":"452f8224b2a4749f5c3e43332e5bcbda128a4072a038bcee0a1554ae39e19d02","slot":null},{"block":null,"method":"eth_call","params":["0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","totalSupply()"],"raw_result":"Some(\"314148640000000000000\")","result_hash":"8f3e1b8fce822d1167b5733090137ebf1c3462c02a7ac043ca24fab4d7ff35d8","slot":null},{"block":null,"method":"eth_call","params":["0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","uiMultiplier()"],"raw_result":"1000000000000000000","result_hash":"46754a2491051f216577f1b9f19516f9be1a28c62f023dcbabd8c5317cdefe4b","slot":null},{"block":null,"method":"eth_getCode","params":["0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"robinhood","contract":"0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","decimals":18,"issuer":"Robinhood","last_checked":"2026-10-18T18:54:09Z","name":"Lumentum","official_deployments":[{"address":"0x8eF20885F94e3D9bc7eB3080279188Bd5ED7c08C","network":"Robinhood Chain"}],"source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"LITE"},"registry_hash":"e40a8f7ec2f1a2c1d6467a45e0976602299513549c0406d646df02a3ecb928c8","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xE9a9471633faF6C0cE15065e74D71a9A02867633","ticker":"LITE","verdict":{"Verified":{"issuer":"Robinhood","ticker":"LITE"}},"version":1}

Signature

K28snkhpktO0m49JAs8AySYCH8JHpTHAD73oKYSJiY90VoRiI0rNxQ3cmmVb2ELxV9zf7G3rmauwbtsnqc8cAQ==

API call

GET /api/attest/33d065f86a473b50fde2682adc9084d78edd2f96a06632ad1919f1b726a27065

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.