GOO/BABA

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":80139655,"chain":"RobinhoodChain","checked_at":"2026-10-04T18:13:11Z","dev":false,"expires_at":"2026-10-05T18:13:11Z","issuer":"Robinhood","pool":{"base":{"address":"0x6572EADe9Fb17F4027baF92FEAC222B9AA746bd0","balance":"9215624437120326234815234","decimals":18,"symbol":"GOO"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0xd4eC79D00b934b9efc51Ab75107ba2d908D5dad6","quote":{"address":"0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","balance":"41453923320045694208","decimals":18,"symbol":"BABA"}},"quote_share_of_supply":0.004970534441312884,"reads":[{"block":null,"method":"eth_getCode","params":["0xd4eC79D00b934b9efc51Ab75107ba2d908D5dad6","latest"],"result_hash":"b0ccb1d24f4c39243730ff94e297fb25255424feed40fe9469031bfd05acaa66","slot":null},{"block":80139655,"method":"eth_blockNumber","params":[],"result_hash":"d9150305eac4c5ef900033e859f22c363d3b3376b715bade967937cee0745a86","slot":null},{"block":null,"method":"eth_call","params":["0xd4eC79D00b934b9efc51Ab75107ba2d908D5dad6","token0()"],"raw_result":"0x6572eade9fb17f4027baf92feac222b9aa746bd0","result_hash":"5fa6d4a2127f9a919c58e88d51e7b1427b4ec08a1c2ab526d13f6709d581f8c8","slot":null},{"block":null,"method":"eth_call","params":["0xd4eC79D00b934b9efc51Ab75107ba2d908D5dad6","token1()"],"raw_result":"0xad25ac6c84d497db898fa1e8387bf6af3532a1c4","result_hash":"5b714e19fac4d1fff5393e0cbd2b7aaaeef00ed60e4e009e82a8ecf2ed6b0788","slot":null},{"block":null,"method":"eth_call","params":["0xd4eC79D00b934b9efc51Ab75107ba2d908D5dad6","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xd4eC79D00b934b9efc51Ab75107ba2d908D5dad6","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xd4eC79D00b934b9efc51Ab75107ba2d908D5dad6","factory()"],"raw_result":"Some(0x649fee51b30dce68eed7b356f5ec6185e3982adf)","result_hash":"9dac63e688bc2d24361c1c13c92f997d30e5356391156fd117f9fd0afaba7757","slot":null},{"block":null,"method":"eth_call","params":["0x6572EADe9Fb17F4027baF92FEAC222B9AA746bd0","symbol()"],"raw_result":"Some(\"GOO\")","result_hash":"de40f8cdeb427b6205c8a06174c7af673e6a881f8833981b21222d6c567b3e3a","slot":null},{"block":null,"method":"eth_call","params":["0x6572EADe9Fb17F4027baF92FEAC222B9AA746bd0","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x6572EADe9Fb17F4027baF92FEAC222B9AA746bd0","balanceOf","0xd4eC79D00b934b9efc51Ab75107ba2d908D5dad6"],"raw_result":"Some(\"9215624437120326234815234\")","result_hash":"46da7c8cbebad966f090e6caf75971a16d7ecc7cd195b8d5b68f585874e073e6","slot":null},{"block":null,"method":"eth_call","params":["0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","symbol()"],"raw_result":"Some(\"BABA\")","result_hash":"af0281c992ee029fba42f5ba384d2ca74ace6c1be5d7152aadb771be3d718be8","slot":null},{"block":null,"method":"eth_call","params":["0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","balanceOf","0xd4eC79D00b934b9efc51Ab75107ba2d908D5dad6"],"raw_result":"Some(\"41453923320045694208\")","result_hash":"5bc70b686250633a527c83d31c165bdf7c250c38cbc4ca7eb605edadf82dc2e5","slot":null},{"block":null,"method":"eth_call","params":["0x6572EADe9Fb17F4027baF92FEAC222B9AA746bd0","symbol()"],"raw_result":"Some(\"GOO\")","result_hash":"de40f8cdeb427b6205c8a06174c7af673e6a881f8833981b21222d6c567b3e3a","slot":null},{"block":null,"method":"eth_call","params":["0x6572EADe9Fb17F4027baF92FEAC222B9AA746bd0","name()"],"raw_result":"Some(\"Grey Goo\")","result_hash":"1ba7a5d3106555e6c13a4f78e4668055dc36d2447512e1f4f5224e316f6d1425","slot":null},{"block":null,"method":"eth_call","params":["0x6572EADe9Fb17F4027baF92FEAC222B9AA746bd0","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x6572EADe9Fb17F4027baF92FEAC222B9AA746bd0","totalSupply()"],"raw_result":"Some(\"999409336899557340554702405\")","result_hash":"8f13252623ad4b0e8dcb9f7dec51aa2b43c7d71d11ec9f5e2a38134327ba5295","slot":null},{"block":null,"method":"eth_call","params":["0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","symbol()"],"raw_result":"Some(\"BABA\")","result_hash":"af0281c992ee029fba42f5ba384d2ca74ace6c1be5d7152aadb771be3d718be8","slot":null},{"block":null,"method":"eth_call","params":["0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","name()"],"raw_result":"Some(\"Alibaba • Robinhood Token\")","result_hash":"58683f7651039cf517494d5a5653034b51f6c822b13cb7e12acb6ea902d2d7da","slot":null},{"block":null,"method":"eth_call","params":["0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","totalSupply()"],"raw_result":"Some(\"8339932820000000000000\")","result_hash":"f224db298c3eacc8fa003ce51ca818142dca414d89532bf7d1c3b866e2781f82","slot":null},{"block":null,"method":"eth_call","params":["0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","uiMultiplier()"],"raw_result":"1000000000000000000","result_hash":"46754a2491051f216577f1b9f19516f9be1a28c62f023dcbabd8c5317cdefe4b","slot":null},{"block":null,"method":"eth_getCode","params":["0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0xad25Ac6C84D497db898fa1E8387bf6Af3532a1c4","decimals":18,"issuer":"Robinhood","last_checked":"2026-10-04T17:14:21Z","name":"Alibaba","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"BABA"},"registry_hash":"f69ce19f1c87746ee806a4dbab02ce9777a7802961dcaec1cc6907418807ebd6","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xd4eC79D00b934b9efc51Ab75107ba2d908D5dad6","ticker":"BABA","verdict":{"Verified":{"issuer":"Robinhood","ticker":"BABA"}},"version":1}

Signature

2BI0+OOiNGGXlypt7oz1ueLm1EOo6lIjN3eiO0Jjz2ECE57uSfK3rydTDWBRlZlXKjEpLROiJp2IuLoeyPJBDQ==

API call

GET /api/attest/ff32bb49e92cb754f1bebd4db99310101bb745da805394bee82cac121afb969b

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.