UNHx/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":"2026-09-29T23:08:09Z","dev":false,"expires_at":"2026-09-30T23:08:09Z","issuer":"Backed xStocks","pool":{"base":{"address":"XszvaiXGPwvk2nwb3o9C1CX4K6zH8sez11E6uyup6fe","balance":"1555377793","decimals":8,"symbol":"UNHx"},"chain":"Solana","dex":"raydium-clmm","pool":"5xm6QUDxRyMg3Gx59CxXB6VZnRKs4bVu44DS6DzZr3Bp","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"6576311494","decimals":6,"symbol":null}},"quote_share_of_supply":0.00031491150336860013,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"3a2c551706719dd14046e7b1f6cc503a31b07f4be2146ad371f4b68bae017100","slot":451784865},{"block":null,"method":"getAccountInfo","params":["5xm6QUDxRyMg3Gx59CxXB6VZnRKs4bVu44DS6DzZr3Bp",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451784866},"value":{"data":["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","base64"],"executable":false,"lamports":11749341,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"89181b28f88ecb66e17800fca3e48d13b2baad482194a1ceb5fa4b8a971ab0a1","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["6pXAYfwwd2zQAsPZyPh68AFGG3PGBEjrpoaDyZiQfSjX",{"commitment":"confirmed"}],"result_hash":"c215a69baf9e08cfe15a9ea7fed9f6f14c8b44fe1b87b84da94b3207bab0606e","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["8e2u6KEhfv2WEvKdomfqfLrMRTq1hPe7VVGUJBb62Z9x",{"commitment":"confirmed"}],"result_hash":"bc4932eb11c7411c3e35524f7e98624650853452c282a8c111ccdcd7d4322b0e","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XszvaiXGPwvk2nwb3o9C1CX4K6zH8sez11E6uyup6fe","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"6750dc69d9b2b568c2b6f31af36247ac6127df4a6be99c0d2fc88c79f51b304f","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"7bc55c71f95d5c98f547279644302d5cf0cf99dae302ffdafe566c73f70f85fe","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451784871},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbLoqlOKYqHAAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"eda407ed5265ab5175b7ad081e93a48c42760fadba088fbb003d84709f614414","slot":null},{"block":null,"method":"getTokenSupply","params":["XszvaiXGPwvk2nwb3o9C1CX4K6zH8sez11E6uyup6fe",{"commitment":"confirmed"}],"result_hash":"3f394510e9bde6b10ca80613f8913c9c7f169427df1ef6a38446309fe6149abe","slot":null},{"block":null,"method":"getAccountInfo","params":["XszvaiXGPwvk2nwb3o9C1CX4K6zH8sez11E6uyup6fe",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451784890},"value":{"data":["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","base64"],"executable":false,"lamports":5644560,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":683}},"result_hash":"51be0d1807c0e5c060b178053d2e1b2212175faa2a4768e98cf5898fc2375a55","slot":null}],"registry_entry":{"chain":"Solana","contract":"XszvaiXGPwvk2nwb3o9C1CX4K6zH8sez11E6uyup6fe","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T22:37:23Z","name":"UnitedHealth","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"UNH"},"registry_hash":"d6272adf0af69a1c2c18f6a79db79616f69be8189283a420b5ba6e572aa0e4ad","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451784865,"subject":"5xm6QUDxRyMg3Gx59CxXB6VZnRKs4bVu44DS6DzZr3Bp","ticker":"UNH","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"UNH"}},"version":1}

Signature

BnCnYYZmb8spn+CsimciSQew167sUy26BEVDbm9iJkT7dBozLF0/rctlnzAdjKoZpvgYv5lyl8OwsbQ9fbnzDw==

API call

GET /api/attest/911f79ff5ab76d80bafa18d6871eecd5c18e543c678005efa4b226f5a15a8e14

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.