Does BMNRx / USDT 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":26242920,"chain":"ethereum","checked_at":"2026-10-21T18:58:13Z","dev":false,"expires_at":"2026-10-22T18:58:13Z","issuer":"Backed xStocks","pool":{"base":{"address":"0x3173dc3AF3981c6e98bB63799B9cBeb5526FF752","balance":"3999282225416039980532","decimals":18,"symbol":"USDT"},"chain":"ethereum","dex":"uniswap-v4","pool":"0x2a11ff72641f112e6abc75b89186321b8f0cee873abd9d8b3f567248c793a9c6","quote":{"address":"0xaeB681B69E5094E04d11BCeF51A71358A374C3ED","balance":"185319748717605918600","decimals":18,"symbol":"BMNRx"}},"quote_share_of_supply":0.0005279764920729514,"reads":[{"block":null,"method":"eth_call","params":["0xbd216513d74c8cf14cf4747e6aaa6420ff64ee9e","poolKeys","0x2a11ff72641f112e6abc75b89186321b8f0cee873abd9d8b3f"],"raw_result":"Object {\"currency0\": String(\"0x3173dc3af3981c6e98bb63799b9cbeb5526ff752\"), \"currency1\": String(\"0xaeb681b69e5094e04d11bcef51a71358a374c3ed\"), \"fee\": String(\"780000\"), \"hooks\": String(\"0x0000000000000000000000000000000000000000\"), \"tickSpacing\": String(\"1\")}","result_hash":"bfc84ebd71a8c3a31585e21cc3962b3c79200178c299ee5bdbaefe25b8b2919e","slot":null},{"block":null,"method":"eth_call","params":["0x7ffe42c4a5deea5b0fec41c94c136cf115597227","getSlot0","0x2a11ff72641f112e6abc75b89186321b8f0cee873abd9d8b3f567248c793a9c6"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x7ffe42c4a5deea5b0fec41c94c136cf115597227","getLiquidity","0x2a11ff72641f112e6abc75b89186321b8f0cee873abd9d8b3f567248c793a9c6"],"raw_result":"860898354664990819010","result_hash":"8a522dc7a740b4437018fc6c23ef05cd25328728dc9999aa2a5568aa08cf5e74","slot":null},{"block":null,"method":"eth_call","params":["0x3173dc3AF3981c6e98bB63799B9cBeb5526FF752","symbol()"],"raw_result":"Some(\"USDT\")","result_hash":"a851493323e1198c0940c2b2ca5c59e97da9c6f50f63f0c09779709ef2572f84","slot":null},{"block":null,"method":"eth_call","params":["0x3173dc3AF3981c6e98bB63799B9cBeb5526FF752","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xaeB681B69E5094E04d11BCeF51A71358A374C3ED","symbol()"],"raw_result":"Some(\"BMNRx\")","result_hash":"fb67f529322ab22c43fc701ee46ab723d8157edeb80447b557eae7a0a98c2947","slot":null},{"block":null,"method":"eth_call","params":["0xaeB681B69E5094E04d11BCeF51A71358A374C3ED","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":26242920,"method":"eth_blockNumber","params":[],"result_hash":"7df10af5e3e1fe0a853c7d0531f97319d6a701c635e1d65130b6c8646291e094","slot":null},{"block":null,"method":"eth_call","params":["0x3173dc3AF3981c6e98bB63799B9cBeb5526FF752","symbol()"],"raw_result":"Some(\"USDT\")","result_hash":"a851493323e1198c0940c2b2ca5c59e97da9c6f50f63f0c09779709ef2572f84","slot":null},{"block":null,"method":"eth_call","params":["0x3173dc3AF3981c6e98bB63799B9cBeb5526FF752","name()"],"raw_result":"Some(\"usdt\")","result_hash":"a45457ba6f160e1f050944262397d040d3c78ed4bdc5316078fd95db2a8b3765","slot":null},{"block":null,"method":"eth_call","params":["0x3173dc3AF3981c6e98bB63799B9cBeb5526FF752","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x3173dc3AF3981c6e98bB63799B9cBeb5526FF752","totalSupply()"],"raw_result":"Some(\"1000000000000000000000000000\")","result_hash":"9a5063c327faec672db6b50450571675cbfbcc3766ebaf6832c3a9f6636ff4d0","slot":null},{"block":null,"method":"eth_call","params":["0xaeB681B69E5094E04d11BCeF51A71358A374C3ED","symbol()"],"raw_result":"Some(\"BMNRx\")","result_hash":"fb67f529322ab22c43fc701ee46ab723d8157edeb80447b557eae7a0a98c2947","slot":null},{"block":null,"method":"eth_call","params":["0xaeB681B69E5094E04d11BCeF51A71358A374C3ED","name()"],"raw_result":"Some(\"Bitmine xStock\")","result_hash":"f9e41a7e6cd755e5c47c8acc38063cf7dae076d664074359a3f334bc12cbb709","slot":null},{"block":null,"method":"eth_call","params":["0xaeB681B69E5094E04d11BCeF51A71358A374C3ED","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xaeB681B69E5094E04d11BCeF51A71358A374C3ED","totalSupply()"],"raw_result":"Some(\"351000000000000000000000\")","result_hash":"1f726c6dc57ef8cdcab0ffb1af3859a5dfcc0c9e6d88b1e5f93e82b626498de8","slot":null},{"block":null,"method":"eth_getCode","params":["0xaeB681B69E5094E04d11BCeF51A71358A374C3ED","latest"],"result_hash":"71ee049d0c0cab5d785d7aef2e6b591e511475fb8ef465f4d8f5335bfd412bfd","slot":null},{"block":null,"method":"eth_getCode","params":["0xaeB681B69E5094E04d11BCeF51A71358A374C3ED","latest"],"result_hash":"71ee049d0c0cab5d785d7aef2e6b591e511475fb8ef465f4d8f5335bfd412bfd","slot":null}],"registry_entry":{"chain":"ethereum","contract":"0xaeB681B69E5094E04d11BCeF51A71358A374C3ED","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-10-21T18:40:19Z","name":"Bitmine","official_deployments":[{"address":"0xaeb681b69e5094e04d11bcef51a71358a374c3ed","network":"Ethereum","wrapper_address":"0xbfd29b7f395d30932033c2f45ab792024e71aa94","wrapper_address_v2":"0xdad5623b32c81aeaa75478fcfe934e9e97018c58"},{"address":"0xaeb681b69e5094e04d11bcef51a71358a374c3ed","network":"BinanceSmartChain","wrapper_address":"0xbfd29b7f395d30932033c2f45ab792024e71aa94","wrapper_address_v2":"0xdad5623b32c81aeaa75478fcfe934e9e97018c58"},{"address":"0xaeb681b69e5094e04d11bcef51a71358a374c3ed","network":"Arbitrum","wrapper_address":"0xbfd29b7f395d30932033c2f45ab792024e71aa94","wrapper_address_v2":"0xdad5623b32c81aeaa75478fcfe934e9e97018c58"},{"address":"XsrBCwaH8c46xiqXBChzobgufRKxQxAWUWbndgBNzFn","network":"Solana"},{"address":"TSYfjdt4x3QDEFADucb6TSzz1XUCTSq1NU","network":"Tron"},{"address":"EQAvL-WWhFk51DEzdnE7fskWpip9EFZV8JTJAjZfGxgYIijL","network":"Ton"},{"address":"0xaeb681b69e5094e04d11bcef51a71358a374c3ed","network":"Mantle","wrapper_address":"0xbfd29b7f395d30932033c2f45ab792024e71aa94","wrapper_address_v2":"0xdad5623b32c81aeaa75478fcfe934e9e97018c58"},{"address":"0xaeb681b69e5094e04d11bcef51a71358a374c3ed","network":"HyperEVM"},{"address":"0xaeb681b69e5094e04d11bcef51a71358a374c3ed","network":"Ink","wrapper_address_v2":"0xdad5623b32c81aeaa75478fcfe934e9e97018c58"},{"address":"0xaeb681b69e5094e04d11bcef51a71358a374c3ed","network":"XLayer","wrapper_address_v2":"0xdad5623b32c81aeaa75478fcfe934e9e97018c58"},{"address":"0xaeb681b69e5094e04d11bcef51a71358a374c3ed","network":"Optimism","wrapper_address_v2":"0xdad5623b32c81aeaa75478fcfe934e9e97018c58"},{"address":"0xaeb681b69e5094e04d11bcef51a71358a374c3ed","network":"Monad","wrapper_address_v2":"0xdad5623b32c81aeaa75478fcfe934e9e97018c58"}],"source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"BMNR"},"registry_hash":"d2b23738a0957d6535d8cddb63373ceb6c6c963a51ba306222a0752fa56fc433","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x2a11ff72641f112e6abc75b89186321b8f0cee873abd9d8b3f567248c793a9c6","ticker":"BMNR","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"BMNR"}},"version":1}

Signature

a18yUQnzmMPMlrPYjpzTbiWvyuGoegkJQ4bsy28im8N6PX72wh18We4bO+pePXboqzfCAlvegPnGPyZDIAOTBA==

API call

GET /api/attest/5c51fd98043e4b9847304d70fd62afb4281219d0a72af39ddecd423787bfdec5

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.