WETH/COIN

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":76125762,"chain":"RobinhoodChain","checked_at":"2026-09-30T01:33:53Z","dev":false,"expires_at":"2026-10-01T01:33:53Z","issuer":"Robinhood","pool":{"base":{"address":"0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73","balance":"57622841807611970429","decimals":18,"symbol":"WETH"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0x6707aeAc7D0e519B083219d27BB427364363183A","quote":{"address":"0x6330D8C3178a418788dF01a47479c0ce7CCF450b","balance":"2633029835050799112993","decimals":18,"symbol":"COIN"}},"quote_share_of_supply":0.2069733202544236,"reads":[{"block":null,"method":"eth_getCode","params":["0x6707aeAc7D0e519B083219d27BB427364363183A","latest"],"result_hash":"1d9fcd1ac461e12541176434684f2a9dcb29465f151828315447b1cb08037e73","slot":null},{"block":76125762,"method":"eth_blockNumber","params":[],"result_hash":"fde34215e734668711ea0a96633ee8c05693e8abbfe5c20732eac8ea7d07de1f","slot":null},{"block":null,"method":"eth_call","params":["0x6707aeAc7D0e519B083219d27BB427364363183A","token0()"],"raw_result":"0x0bd7d308f8e1639fab988df18a8011f41eacad73","result_hash":"de544c5c8fa36cc133d3195abda0458ac2fac1d8dc7a92dfa423a4c9aa1b415d","slot":null},{"block":null,"method":"eth_call","params":["0x6707aeAc7D0e519B083219d27BB427364363183A","token1()"],"raw_result":"0x6330d8c3178a418788df01a47479c0ce7ccf450b","result_hash":"53fc35dbeaaa92dd497610a4cc49227a4e41be6516dd7815c5f5179b3e0d458d","slot":null},{"block":null,"method":"eth_call","params":["0x6707aeAc7D0e519B083219d27BB427364363183A","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0x6707aeAc7D0e519B083219d27BB427364363183A","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x6707aeAc7D0e519B083219d27BB427364363183A","factory()"],"raw_result":"Some(0x1f7d7550b1b028f7571e69a784071f0205fd2efa)","result_hash":"3a5325de1b5dc50662a9e2ec44d8428ded4306d2bd46195f62299474690e30aa","slot":null},{"block":null,"method":"eth_call","params":["0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73","symbol()"],"raw_result":"Some(\"WETH\")","result_hash":"dc9a1e89eb43cbff5ed113508a53364a9573ef16fa5feb01fc948b3da8bfe14b","slot":null},{"block":null,"method":"eth_call","params":["0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73","balanceOf","0x6707aeAc7D0e519B083219d27BB427364363183A"],"raw_result":"Some(\"57622841807611970429\")","result_hash":"ff7fe301368f6e3b4a8ad25e9e719e7942cd27b51dfe6c14fd9b60d2c051b8ce","slot":null},{"block":null,"method":"eth_call","params":["0x6330D8C3178a418788dF01a47479c0ce7CCF450b","symbol()"],"raw_result":"Some(\"COIN\")","result_hash":"292009d6f5328fe0416a1fb746a032181def04aaf9da104dc2bae0f04def001c","slot":null},{"block":null,"method":"eth_call","params":["0x6330D8C3178a418788dF01a47479c0ce7CCF450b","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x6330D8C3178a418788dF01a47479c0ce7CCF450b","balanceOf","0x6707aeAc7D0e519B083219d27BB427364363183A"],"raw_result":"Some(\"2633029835050799112993\")","result_hash":"8ae3efff6aea6306f132052cc343fc7ed51b4bd388eaa3037c26c2be406b0a6f","slot":null},{"block":null,"method":"eth_call","params":["0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73","symbol()"],"raw_result":"Some(\"WETH\")","result_hash":"dc9a1e89eb43cbff5ed113508a53364a9573ef16fa5feb01fc948b3da8bfe14b","slot":null},{"block":null,"method":"eth_call","params":["0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73","name()"],"raw_result":"Some(\"WETH\")","result_hash":"dc9a1e89eb43cbff5ed113508a53364a9573ef16fa5feb01fc948b3da8bfe14b","slot":null},{"block":null,"method":"eth_call","params":["0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73","totalSupply()"],"raw_result":"Some(\"34816875545282364207623\")","result_hash":"3557fefd2a1840dc16068e5bfe52bc4bba1518992f1498e9456a7ff26c48daa9","slot":null},{"block":null,"method":"eth_call","params":["0x6330D8C3178a418788dF01a47479c0ce7CCF450b","symbol()"],"raw_result":"Some(\"COIN\")","result_hash":"292009d6f5328fe0416a1fb746a032181def04aaf9da104dc2bae0f04def001c","slot":null},{"block":null,"method":"eth_call","params":["0x6330D8C3178a418788dF01a47479c0ce7CCF450b","name()"],"raw_result":"Some(\"Coinbase • Robinhood Token\")","result_hash":"3b47141560652f9a7a68d468396bee799edceac2af84d5cd6dd79288f1acf1c4","slot":null},{"block":null,"method":"eth_call","params":["0x6330D8C3178a418788dF01a47479c0ce7CCF450b","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x6330D8C3178a418788dF01a47479c0ce7CCF450b","totalSupply()"],"raw_result":"Some(\"12721590550000000000000\")","result_hash":"af7f35d297ab7f2ddf857ba12733db2f4b1a48f607bdd160ec7c0823689b4216","slot":null},{"block":null,"method":"eth_call","params":["0x6330D8C3178a418788dF01a47479c0ce7CCF450b","uiMultiplier()"],"raw_result":"1000000000000000000","result_hash":"46754a2491051f216577f1b9f19516f9be1a28c62f023dcbabd8c5317cdefe4b","slot":null},{"block":null,"method":"eth_getCode","params":["0x6330D8C3178a418788dF01a47479c0ce7CCF450b","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x6330D8C3178a418788dF01a47479c0ce7CCF450b","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0x6330D8C3178a418788dF01a47479c0ce7CCF450b","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-30T00:37:24Z","name":"Coinbase","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"COIN"},"registry_hash":"5524ad353114ce82e4459bdb0533016e63f15d54f628b91498b20cf2b964d0de","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x6707aeAc7D0e519B083219d27BB427364363183A","ticker":"COIN","verdict":{"Verified":{"issuer":"Robinhood","ticker":"COIN"}},"version":1}

Signature

0TLApo8U0FCg2irb4DAEd8Rn01WXxHK9B5YBsb019X97eOAiTq8owThK/svA3hgIUZIhCxcC21EW2uWOnXwvAQ==

API call

GET /api/attest/139395c7b6e5f12f89ba39dda273627592fa87902ce152680d6504723f468dae

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.