QQQx/Unknown

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":null,"chain":"Solana","checked_at":"2026-09-29T22:55:06Z","dev":false,"expires_at":"2026-09-30T22:55:06Z","issuer":"Backed xStocks","pool":{"base":{"address":"Xs8S1uUs1zvS2p7iwtsG3b6fkhpvmwz4GYU3gWAmWHZ","balance":"101047962800","decimals":8,"symbol":"QQQx"},"chain":"Solana","dex":"raydium-clmm","pool":"GMjGLWzvK75LPetrgAmdeXnvxc4fUuQPwJxeQqTDU1aG","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"1504659024654","decimals":6,"symbol":null}},"quote_share_of_supply":0.01197815890238358,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"ed4b3ed2a007b9e4b68c50750258c6e12c574a425dabe55d55922e33d48be3c7","slot":451781950},{"block":null,"method":"getAccountInfo","params":["GMjGLWzvK75LPetrgAmdeXnvxc4fUuQPwJxeQqTDU1aG",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451781952},"value":{"data":["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","base64"],"executable":false,"lamports":11637122,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"62f7a9626038ee791571058a149bdf9f94c30eacca437a3595265b5c121a23d5","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["4RWQkhLbmgQ4xeQyY2iqAqiEFkRNWB5gdChZkXaFUVxY",{"commitment":"confirmed"}],"result_hash":"b3d5412472e9bb564c74a85932d64cfe60a532b7a191f2704d43a97fff8bf127","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["D3JT9Uam9DAuBysFvpYDTxQqLuTxRrVwuj5je1XCLLU7",{"commitment":"confirmed"}],"result_hash":"52753a4b2503b03eeaf773243642dc677ff423581b1e8ba9342b27bc536350f3","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["Xs8S1uUs1zvS2p7iwtsG3b6fkhpvmwz4GYU3gWAmWHZ","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"2b9e352c64f47f44a7d7717495722697d34c7e84b9070af0630843dc04c69e5a","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"63d342d74f6c9f936e90184571ba2874670797c83ddf52edffbe232702467eb8","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451781958},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbzbjqWa0qHAAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"0cf84c31735460ab34d5a93adfe12a08e170df84223e6b3614f77bdfa2d05d70","slot":null},{"block":null,"method":"getTokenSupply","params":["Xs8S1uUs1zvS2p7iwtsG3b6fkhpvmwz4GYU3gWAmWHZ",{"commitment":"confirmed"}],"result_hash":"44b2f5090c60f46a8388796ab2ee3e3dda0839bcaa5d2017ba78face146a71ef","slot":null},{"block":null,"method":"getAccountInfo","params":["Xs8S1uUs1zvS2p7iwtsG3b6fkhpvmwz4GYU3gWAmWHZ",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451781976},"value":{"data":["AQAAAGVqQkIv6okUBqQZ0dHeCPQqhHlBtaGulevOYZrDFyk0JobZKawHAAAIAQEAAAD/3+wbzSzTg5PITaoIyRzA041nf/jQq3tdAz8A9zLMMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAARIAQABD+fHuLje4B+pFy3TmAJcivsAJKWAm5ORVi0NeJKXpxgfoGrUJ4eUplG56Y4h7EwYXquLdhe/tGgTaVgwGI3YkDAAgAEP58e4uN7gH6kXLdOYAlyK+wAkpYCbk5FWLQ14kpenGBgABAAEZADgABm9ZIlHMR3R4JaWa0UIupDVz9SjaXe4q94ErMU+ZReMp/ZNmKQvwP/ATr2oAAAAAyjBP9ScO8D8aACEA/9/sG80s04OTyE2qCMkcwNONZ3/40Kt7XQM/APcyzDAABABBAEP58e4uN7gH6kXLdOYAlyK+wAkpYCbk5FWLQ14kpenGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADgBAAEP58e4uN7gH6kXLdOYAlyK+wAkpYCbk5FWLQ14kpenGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAATAKQAQ/nx7i43uAfqRct05gCXIr7ACSlgJuTkVYtDXiSl6cYH6Bq1CeHlKZRuemOIexMGF6ri3YXv7RoE2lYMBiN2JA0AAABOYXNkYXEgeFN0b2NrBAAAAFFRUXhDAAAAaHR0cHM6Ly94c3RvY2tzLW1ldGFkYXRhLmJhY2tlZC5maS90b2tlbnMvU29sYW5hL1FRUXgvbWV0YWRhdGEuanNvbgAAAAA=","base64"],"executable":false,"lamports":106602830,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":677}},"result_hash":"bea9db59ddd3407c745252f4153e3b938070ca1de1f745af5d9e8f100e79f46a","slot":null}],"registry_entry":{"chain":"Solana","contract":"Xs8S1uUs1zvS2p7iwtsG3b6fkhpvmwz4GYU3gWAmWHZ","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T22:37:23Z","name":"Nasdaq","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"QQQ"},"registry_hash":"d6272adf0af69a1c2c18f6a79db79616f69be8189283a420b5ba6e572aa0e4ad","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451781950,"subject":"GMjGLWzvK75LPetrgAmdeXnvxc4fUuQPwJxeQqTDU1aG","ticker":"QQQ","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"QQQ"}},"version":1}

Signature

eev6rtb7MvPUHDO1v8EUG7iR+d/JxgkbhbU4eyzfloW+ELkWFhLUz/emCo72GiPJ+oDeUZrLGxMf+8n9hgi2Bw==

API call

GET /api/attest/dedc5dd388d8245c047e6e850a944713206b8a9e4455b261a720a31274e55920

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.