Does WULF / 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":92065110,"chain":"robinhood","checked_at":"2026-10-18T20:49:04Z","dev":false,"expires_at":"2026-10-19T20:49:04Z","issuer":"Robinhood","pool":{"base":{"address":"0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","balance":"261584155566778721429","decimals":18,"symbol":"WULF"},"chain":"robinhood","dex":"uniswap-v3","pool":"0x0c72e22D7a3EF8Bb845478e5D77aec87789dEfc6","quote":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"1450255414","decimals":6,"symbol":"USDG"}},"quote_share_of_supply":0.28792243626939407,"reads":[{"block":92065110,"method":"eth_blockNumber","params":[],"result_hash":"ca57f3f3635726dbb1703a2023a7954569aa1584c9418cf126268e7bbdb826ab","slot":null},{"block":null,"method":"eth_call","params":["0x0c72e22D7a3EF8Bb845478e5D77aec87789dEfc6","token0()"],"raw_result":"0x348be1a8663f15edde5cdf8a96bb69078f7ab6fd","result_hash":"49a7fda5636713e7fb1541485c18c789011347a6da035ab7fe31fbaa1ff166b7","slot":null},{"block":null,"method":"eth_call","params":["0x0c72e22D7a3EF8Bb845478e5D77aec87789dEfc6","token1()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0x0c72e22D7a3EF8Bb845478e5D77aec87789dEfc6","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0x0c72e22D7a3EF8Bb845478e5D77aec87789dEfc6","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x0c72e22D7a3EF8Bb845478e5D77aec87789dEfc6","factory()"],"raw_result":"0x1f7d7550b1b028f7571e69a784071f0205fd2efa","result_hash":"bf7614e6e838b22e4363dfcb3022451641875235ca13e64f8d2d8c3334ff85f3","slot":null},{"block":null,"method":"eth_call","params":["0x0c72e22D7a3EF8Bb845478e5D77aec87789dEfc6","fee()"],"raw_result":"10000","result_hash":"328d48ab2376d2f42d3af5ba69086143c8f5fe883ed195a8280b2154a5711a33","slot":null},{"block":null,"method":"eth_call","params":["0x1f7d7550B1b028f7571E69A784071F0205FD2EfA","getPool","0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","0x2710"],"raw_result":"0x0c72e22d7a3ef8bb845478e5d77aec87789defc6","result_hash":"793dc45d15ea200cfa88576f35b337e7b2a3acaaecda8c68a07557905f497c86","slot":null},{"block":null,"method":"eth_call","params":["0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","symbol()"],"raw_result":"Some(\"WULF\")","result_hash":"7352cb48af09648e96b2764ce0ef9c111d6124bf554fef1bf98d3c560606844b","slot":null},{"block":null,"method":"eth_call","params":["0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","balanceOf","0x0c72e22D7a3EF8Bb845478e5D77aec87789dEfc6"],"raw_result":"Some(\"261584155566778721429\")","result_hash":"3d422c1fe8b180a2b63ba5f64f974a09cd82d88be7b92aa87bfe124b4caa1ae5","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","0x0c72e22D7a3EF8Bb845478e5D77aec87789dEfc6"],"raw_result":"Some(\"1450255414\")","result_hash":"cc59722882d7b505e59a2823029c607cbea24c21b38eb302a305785853ac5f02","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(\"695806034790491\")","result_hash":"21a27cf72b5dd60088135211f2c56057779d2f5e723b98f1c89b7732b57a27e1","slot":null},{"block":null,"method":"eth_call","params":["0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","symbol()"],"raw_result":"Some(\"WULF\")","result_hash":"7352cb48af09648e96b2764ce0ef9c111d6124bf554fef1bf98d3c560606844b","slot":null},{"block":null,"method":"eth_call","params":["0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","name()"],"raw_result":"Some(\"TeraWulf • Robinhood Token\")","result_hash":"744349d411215d22bcba815214784a2e2ca12efd872c4e698d12a0c58039a858","slot":null},{"block":null,"method":"eth_call","params":["0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","totalSupply()"],"raw_result":"Some(\"908523000000000000000\")","result_hash":"17a579e919aee59978484ab76c162d7e8d4e419d652e57302fcd06fb75731f3b","slot":null},{"block":null,"method":"eth_call","params":["0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","uiMultiplier()"],"raw_result":"1000000000000000000","result_hash":"46754a2491051f216577f1b9f19516f9be1a28c62f023dcbabd8c5317cdefe4b","slot":null},{"block":null,"method":"eth_getCode","params":["0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"robinhood","contract":"0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","decimals":18,"issuer":"Robinhood","last_checked":"2026-10-18T20:40:19Z","name":"TeraWulf","official_deployments":[{"address":"0x348Be1A8663f15edDe5CDf8A96BB69078f7aB6Fd","network":"Robinhood Chain"}],"source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"WULF"},"registry_hash":"232d0be2eda56472709e0cf69b424df4c8dd39a27138a34cf3d57c8f428c0f9e","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x0c72e22D7a3EF8Bb845478e5D77aec87789dEfc6","ticker":"WULF","verdict":{"Verified":{"issuer":"Robinhood","ticker":"WULF"}},"version":1}

Signature

WTAnkRsEXJ5jMzL9KEimLNpmjaDx/fa3chVOda6bZPSPhF+w1DrM4AlRxjvp6T0rtmxx1IQAjMPci00b+vOhBw==

API call

GET /api/attest/e4d8e3d0420680967d8d42ae2c41637150eb7d0e8cb1fd2c1cc70e21e8d24f9d

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.