WETH/SPY

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":76076967,"chain":"RobinhoodChain","checked_at":"2026-09-30T00:11:59Z","dev":false,"expires_at":"2026-10-01T00:11:59Z","issuer":"Robinhood","pool":{"base":{"address":"0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73","balance":"161832909443015467789","decimals":18,"symbol":"WETH"},"chain":"RobinhoodChain","dex":"uniswap-v3","pool":"0xDDCBBa3666f578E3F09516f21Ff85BFee859AB5e","quote":{"address":"0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","balance":"1658078763510351080215","decimals":18,"symbol":"SPY"}},"quote_share_of_supply":0.0543193688448606,"reads":[{"block":null,"method":"eth_getCode","params":["0xDDCBBa3666f578E3F09516f21Ff85BFee859AB5e","latest"],"result_hash":"80e50ab606bb0437587f077e9f5950b6887a05d434ab19f5558d426e891f16ed","slot":null},{"block":76076967,"method":"eth_blockNumber","params":[],"result_hash":"a5e80e106e448c3f0f1f5c094c0d015ca7f8bb3aa2d6134ebb43d162cc4af55d","slot":null},{"block":null,"method":"eth_call","params":["0xDDCBBa3666f578E3F09516f21Ff85BFee859AB5e","token0()"],"raw_result":"0x0bd7d308f8e1639fab988df18a8011f41eacad73","result_hash":"de544c5c8fa36cc133d3195abda0458ac2fac1d8dc7a92dfa423a4c9aa1b415d","slot":null},{"block":null,"method":"eth_call","params":["0xDDCBBa3666f578E3F09516f21Ff85BFee859AB5e","token1()"],"raw_result":"0x117cc2133c37b721f49de2a7a74833232b3b4c0c","result_hash":"0bad12daf170a4396e80fc7cf0113478ee41f5efde1eee3745b8587273255e6f","slot":null},{"block":null,"method":"eth_call","params":["0xDDCBBa3666f578E3F09516f21Ff85BFee859AB5e","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xDDCBBa3666f578E3F09516f21Ff85BFee859AB5e","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xDDCBBa3666f578E3F09516f21Ff85BFee859AB5e","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","0xDDCBBa3666f578E3F09516f21Ff85BFee859AB5e"],"raw_result":"Some(\"161832909443015467789\")","result_hash":"522ba67dbc97893cb39758320121a008930ae924a86a7cfe73ed875d0f7b62d6","slot":null},{"block":null,"method":"eth_call","params":["0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","symbol()"],"raw_result":"Some(\"SPY\")","result_hash":"34d3f5561d0147a414433e6c15434a3cfed40c9603e695e4557af839e9d67e41","slot":null},{"block":null,"method":"eth_call","params":["0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","balanceOf","0xDDCBBa3666f578E3F09516f21Ff85BFee859AB5e"],"raw_result":"Some(\"1658078763510351080215\")","result_hash":"b37f6817de7c7bc7ed5024222b0f501abb0d90ca1cb1821d1baec543ebc2a93f","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(\"34374524939380121272246\")","result_hash":"369739abe861a8bbe1a673e0d92ab26473e56a92858b9cc37209bdf1d94c6d5c","slot":null},{"block":null,"method":"eth_call","params":["0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","symbol()"],"raw_result":"Some(\"SPY\")","result_hash":"34d3f5561d0147a414433e6c15434a3cfed40c9603e695e4557af839e9d67e41","slot":null},{"block":null,"method":"eth_call","params":["0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","name()"],"raw_result":"Some(\"SPDR S&P 500 ETF Trust • Robinhood Token\")","result_hash":"8e872eb8019f8165d7591012f3d4fabe99c7ad3ac88c5827668a1278380a33a5","slot":null},{"block":null,"method":"eth_call","params":["0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","totalSupply()"],"raw_result":"Some(\"30524632350680000000000\")","result_hash":"cd7319294f52974ce0b7b3d1303edd173282a27f6b6f80781244d501bd2dab90","slot":null},{"block":null,"method":"eth_call","params":["0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","uiMultiplier()"],"raw_result":"1001717991187472003","result_hash":"23f9fe5ef231fb76617034b1a2541e1a829a3a2b9ea57f99dded816d6ecf8bfe","slot":null},{"block":null,"method":"eth_getCode","params":["0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null},{"block":null,"method":"eth_getCode","params":["0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","latest"],"result_hash":"e023f4a2e14683cf62969bf3dc7d7821b1e293e30ebe17f3bc5fd0b223173f25","slot":null}],"registry_entry":{"chain":"RobinhoodChain","contract":"0x117cc2133c37B721F49dE2A7a74833232B3B4C0C","decimals":18,"issuer":"Robinhood","last_checked":"2026-09-29T23:37:24Z","name":"SPDR S&P 500 ETF Trust","source":"robinhood-registry","source_url":"https://api.robinhood.com/rhj/assets","ticker":"SPY"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xDDCBBa3666f578E3F09516f21Ff85BFee859AB5e","ticker":"SPY","verdict":{"Verified":{"issuer":"Robinhood","ticker":"SPY"}},"version":1}

Signature

/qCDhFuWBWD+WWQdCHNgz3kq9xO1KCcktmT/xozokyfIv1/EuHw+Z+bC70dMq1sR2HNbpJtGQBIFiBacIgFtAg==

API call

GET /api/attest/09690fc31b287839048a41dfee97b9614235ba83649ebf15cad26312cf40348c

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.