USDG/NNE

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":79688806,"chain":"RobinhoodChain","checked_at":"2026-10-04T05:29:35Z","dev":false,"expires_at":"2026-10-05T05:29:35Z","issuer":"Robinhood","pool":{"base":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"477817951","decimals":6,"symbol":"USDG"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0xb05f066B2f63689cEDd850F54A2eDbAd069C44ca","quote":{"address":"0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","balance":"136067713929831085551","decimals":18,"symbol":"NNE"}},"quote_share_of_supply":0.008571759715050031,"reads":[{"block":null,"method":"eth_getCode","params":["0xb05f066B2f63689cEDd850F54A2eDbAd069C44ca","latest"],"result_hash":"dc9faf24576be0e43b7ea56a962045fc8a6a4bf4117dc4f2345a5fb10fd6c57d","slot":null},{"block":79688806,"method":"eth_blockNumber","params":[],"result_hash":"47583e94b8ecb39e85ca8058950b364e734bbad61bfd508f97b47e63aee5c946","slot":null},{"block":null,"method":"eth_call","params":["0xb05f066B2f63689cEDd850F54A2eDbAd069C44ca","token0()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0xb05f066B2f63689cEDd850F54A2eDbAd069C44ca","token1()"],"raw_result":"0xbef75684c43c4ea7bd18dd532a2244674ee8b926","result_hash":"cb939dac0188679798af2772c357ee6118021ba230519ffc659e960afc9feeab","slot":null},{"block":null,"method":"eth_call","params":["0xb05f066B2f63689cEDd850F54A2eDbAd069C44ca","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xb05f066B2f63689cEDd850F54A2eDbAd069C44ca","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xb05f066B2f63689cEDd850F54A2eDbAd069C44ca","factory()"],"raw_result":"Some(0xece6ecd61177336ea6fb9b17937ac439d85ee20b)","result_hash":"4308a73b33e66560efc5801f6f0b7761abdbd30804442a13b44059a6159555bb","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","0xb05f066B2f63689cEDd850F54A2eDbAd069C44ca"],"raw_result":"Some(\"477817951\")","result_hash":"7b11b472ff0714b2cbae112f5140ed96da73ee6451d16f2c3ddceac8923df7eb","slot":null},{"block":null,"method":"eth_call","params":["0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","symbol()"],"raw_result":"Some(\"NNE\")","result_hash":"dac9e0372c5e179f75518e2f2f959c91caafa74706b98fbb94747a33500d074a","slot":null},{"block":null,"method":"eth_call","params":["0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","balanceOf","0xb05f066B2f63689cEDd850F54A2eDbAd069C44ca"],"raw_result":"Some(\"136067713929831085551\")","result_hash":"7a4a6be49f34f14c9ac3781be8c6818c37e736adc9c9e2725abfb2fc7d4802ca","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(\"700104924001817\")","result_hash":"5ced3a3dd4086127ef6b0ce739908268b364db2b385d8bb5fe332fa70ff2ebef","slot":null},{"block":null,"method":"eth_call","params":["0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","symbol()"],"raw_result":"Some(\"NNE\")","result_hash":"dac9e0372c5e179f75518e2f2f959c91caafa74706b98fbb94747a33500d074a","slot":null},{"block":null,"method":"eth_call","params":["0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","name()"],"raw_result":"Some(\"Nano Nuclear Energy • Robinhood Token\")","result_hash":"b3388b7fe48e322eb1af306334a0ef4598974a3c70a69a9b7e97bb6cf4be39d6","slot":null},{"block":null,"method":"eth_call","params":["0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","totalSupply()"],"raw_result":"Some(\"15873953360000000000000\")","result_hash":"3c5b42e53d6780c4d2efab76e6b5ee982d309faabcd339bae408bb3cdca60265","slot":null},{"block":null,"method":"eth_call","params":["0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","uiMultiplier()"],"raw_result":"1000000000000000000","result_hash":"46754a2491051f216577f1b9f19516f9be1a28c62f023dcbabd8c5317cdefe4b","slot":null},{"block":null,"method":"eth_getCode","params":["0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0xBEF75684C43c4ea7BD18Dd532a2244674Ee8b926","decimals":18,"issuer":"Robinhood","last_checked":"2026-10-04T05:14:21Z","name":"Nano Nuclear Energy","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"NNE"},"registry_hash":"f94fc48d8ff44ad0f14377941089c80a9b74ddf1e078265c68f19dc38a6278ed","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xb05f066B2f63689cEDd850F54A2eDbAd069C44ca","ticker":"NNE","verdict":{"Verified":{"issuer":"Robinhood","ticker":"NNE"}},"version":1}

Signature

Ma/VeghzGHirF8TDajWEqQPSSXu0N7gejUO+jO76b3s/LACTLikZV0kA9GmdZctnF7kXcNVhMueaJrH4OVT6AQ==

API call

GET /api/attest/245025928b3358dd800aca26a3f573957259a38859b96b5def2003c1ae3f9c9b

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.