USDG/MU

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":75843490,"chain":"RobinhoodChain","checked_at":"2026-09-29T17:41:54Z","dev":false,"expires_at":"2026-09-30T17:41:54Z","issuer":"Robinhood","pool":{"base":{"address":"0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168","balance":"521682129238","decimals":6,"symbol":"USDG"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0xd057B1Bc54917855BBee58eAd58647f47caB35E5","quote":{"address":"0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","balance":"355262352323499395150","decimals":18,"symbol":"MU"}},"quote_share_of_supply":0.08393881613191459,"reads":[{"block":null,"method":"eth_getCode","params":["0xd057B1Bc54917855BBee58eAd58647f47caB35E5","latest"],"result_hash":"393d430662a653071d0c3b9e6dd08b0c75be8eb24f21f2b28bee3909acbbd741","slot":null},{"block":75843490,"method":"eth_blockNumber","params":[],"result_hash":"bf3c49c568c55c79ee952d6a2b72b7285f051d565baa2b912337a5ccb1132dc1","slot":null},{"block":null,"method":"eth_call","params":["0xd057B1Bc54917855BBee58eAd58647f47caB35E5","token0()"],"raw_result":"0x5fc5360d0400a0fd4f2af552add042d716f1d168","result_hash":"742eb919f060d78d6f55d9d90c592b8d91ea7358553fc7e37cb579cf21192137","slot":null},{"block":null,"method":"eth_call","params":["0xd057B1Bc54917855BBee58eAd58647f47caB35E5","token1()"],"raw_result":"0xff080c8ce2e5feadaca0da81314ae59d232d4afd","result_hash":"e8a5ea87b28109775a933639db95ddd918b3ac3acd4c9290a2d3b7f91517f7a1","slot":null},{"block":null,"method":"eth_call","params":["0xd057B1Bc54917855BBee58eAd58647f47caB35E5","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xd057B1Bc54917855BBee58eAd58647f47caB35E5","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xd057B1Bc54917855BBee58eAd58647f47caB35E5","factory()"],"raw_result":"Some(0x1f7d7550b1b028f7571e69a784071f0205fd2efa)","result_hash":"3a5325de1b5dc50662a9e2ec44d8428ded4306d2bd46195f62299474690e30aa","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","0xd057B1Bc54917855BBee58eAd58647f47caB35E5"],"raw_result":"Some(\"521682129238\")","result_hash":"4cfb4311baf1ccab9bc6fe56354b843befe0fe718060d6fe29f21ca76049800c","slot":null},{"block":null,"method":"eth_call","params":["0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","symbol()"],"raw_result":"Some(\"MU\")","result_hash":"5e930b4625ab639df3d00a55c6129e7402c2b0b0a3e84549fe37e430cd3e9e20","slot":null},{"block":null,"method":"eth_call","params":["0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","balanceOf","0xd057B1Bc54917855BBee58eAd58647f47caB35E5"],"raw_result":"Some(\"355262352323499395150\")","result_hash":"3d5b8e78ce85faf2021631b3ef6310b813de129237ef99b48f34348b17d53602","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(\"684994614175066\")","result_hash":"f2b2e953d538a98e499398e3d0e091decd0291ff1ee412ffdbc3d38fceb5ad7b","slot":null},{"block":null,"method":"eth_call","params":["0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","symbol()"],"raw_result":"Some(\"MU\")","result_hash":"5e930b4625ab639df3d00a55c6129e7402c2b0b0a3e84549fe37e430cd3e9e20","slot":null},{"block":null,"method":"eth_call","params":["0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","name()"],"raw_result":"Some(\"Micron Technology • Robinhood Token\")","result_hash":"03e3451259c7ed7df959af52f1f50b5cf9325020eb7a7a19b44736ae35369a8e","slot":null},{"block":null,"method":"eth_call","params":["0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","totalSupply()"],"raw_result":"Some(\"4232396508490000000000\")","result_hash":"a405f1a3afa6ee0efc4fbaad97e42359798b2f5c924ade989aa8a3ec1da14576","slot":null},{"block":null,"method":"eth_call","params":["0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","uiMultiplier()"],"raw_result":"1000074823219171086","result_hash":"47105670efa2f485686a71702281414fa9f53fa189408bebfa280a63a8667b1b","slot":null},{"block":null,"method":"eth_getCode","params":["0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0xfF080c8ce2E5feadaCa0Da81314Ae59D232d4afD","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-29T17:37:24Z","name":"Micron Technology","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"MU"},"registry_hash":"f189f325318d314f25c8315e697f5659668d944e1e16ca888046ea785bc1f538","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xd057B1Bc54917855BBee58eAd58647f47caB35E5","ticker":"MU","verdict":{"Verified":{"issuer":"Robinhood","ticker":"MU"}},"version":1}

Signature

S2uofkcQ2Ph0TwIMy8sdQLJs7wGG4XL4jsIPKGmV7NWa+QRSB5jb5OEBVdl2+O+pkl+fNIUN410H6jBBmPjMDQ==

API call

GET /api/attest/d5d72918aadf6daa7798f3c73a2902809332020de9b8a1ed12061873b36bee03

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.