AZNx/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":"2026-09-30T00:26:36Z","dev":false,"expires_at":"2026-10-01T00:26:36Z","issuer":"Backed xStocks","pool":{"base":{"address":"Xs3ZFkPYT2BN7qBMqf1j1bfTeTm1rFzEFSsQ1z3wAKU","balance":"2722305330","decimals":8,"symbol":"AZNx"},"chain":"Solana","dex":"raydium-clmm","pool":"BpqSiDKD3PKhg65M35wGML84r2kkV4MFEhikGbLNM5sc","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"1322810729","decimals":6,"symbol":null}},"quote_share_of_supply":0.00016347689339944784,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"7fa57f3b661fd66f0bc0858365e566b7b6379102ad221e2cf6af46b68052573c","slot":451802449},{"block":null,"method":"getAccountInfo","params":["BpqSiDKD3PKhg65M35wGML84r2kkV4MFEhikGbLNM5sc",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451802451},"value":{"data":["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","base64"],"executable":false,"lamports":11637155,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"e26af7d96a763e0106bda139304da27539328069549a3d01ffbb0959bf932d8e","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["4Logazbn8MeRHZVjUkPBM6XLsHLfZWYtjKAuiDfjpMYi",{"commitment":"confirmed"}],"result_hash":"3dcd6998af2d068fe6a6453ee2d251684167348bca1cb93e46f4d8dde8b8aa30","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["F3RPt5pSxirBM5CQdjy7yTgEJ57oZSs3oFxDLD7CvvkL",{"commitment":"confirmed"}],"result_hash":"2c24810c3af6c1d4b4d878d854def17389b25db19435d8b7ec5e9a82dd8cd7ff","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["Xs3ZFkPYT2BN7qBMqf1j1bfTeTm1rFzEFSsQ1z3wAKU","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"52369fe35d87b4aea3bc368ce87fac91218f2d9b3fa1685e6e2a46b789a78146","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"5da4294ec39cf7fb2cec38ecc3cc37dcedb9f05bcf918bf412d17ebce365ab0f","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451802461},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbTk3mr2H0GwAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"64e5beeb2e14c6926314e8a2da03c3d1ba5bb4b49bbc4291c8cf5c1fabeed48b","slot":null},{"block":null,"method":"getTokenSupply","params":["Xs3ZFkPYT2BN7qBMqf1j1bfTeTm1rFzEFSsQ1z3wAKU",{"commitment":"confirmed"}],"result_hash":"64ec51d9b60d15bae6f12aa2caa2d22c9c40c87b42da05efd60742bf8175c0f4","slot":null},{"block":null,"method":"getAccountInfo","params":["Xs3ZFkPYT2BN7qBMqf1j1bfTeTm1rFzEFSsQ1z3wAKU",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451802481},"value":{"data":["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","base64"],"executable":false,"lamports":5637600,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":682}},"result_hash":"e132766f876f490ff1673a667a9158448a46d8f9c2d5b0f7109d3551ac9d5a1a","slot":null}],"registry_entry":{"chain":"Solana","contract":"Xs3ZFkPYT2BN7qBMqf1j1bfTeTm1rFzEFSsQ1z3wAKU","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T23:37:23Z","name":"AstraZeneca","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"AZN"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451802449,"subject":"BpqSiDKD3PKhg65M35wGML84r2kkV4MFEhikGbLNM5sc","ticker":"AZN","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"AZN"}},"version":1}

Signature

4bY7ysTCc/ZYJ7k23qCpKIyuj2lLX4V+8wtkI3KuSt68fHmvcsoP2UzgFUuC1QAsM8Xi5B0eNl8w0fOu0+1yDQ==

API call

GET /api/attest/98cc27b5de61168bd0bea4e4f365836e8bd0b43b75a7eb8a4190174104dabc68

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.