Fx/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":"2026-09-29T23:11:06Z","dev":false,"expires_at":"2026-09-30T23:11:06Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsBNJXGu68cBH5hgFxdqZkeh8cMQv32jeEtZtYTYvfS","balance":"22245080","decimals":8,"symbol":"Fx"},"chain":"Solana","dex":"orca-whirlpool","pool":"3y9rX9M32i2zCCBGWfAEGWr62kiah4KKCaKAkeWqxNCt","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"2364749","decimals":6,"symbol":null}},"quote_share_of_supply":5.162712316666764e-7,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"cbda59cc44b369cdd57efa5dad1f1e56070506ce90e900a3d797147335818e19","slot":451785524},{"block":null,"method":"getAccountInfo","params":["3y9rX9M32i2zCCBGWfAEGWr62kiah4KKCaKAkeWqxNCt",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451785525},"value":{"data":["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","base64"],"executable":false,"lamports":3967480,"owner":"whirLbMiicVdio4qvUfM5KAg6Ct8VwpYzGff3uctyCc","rentEpoch":18446744073709551615,"space":653}},"result_hash":"060957961f2ba7cdb2e15e5190a72f415fab9d2ee33aa56bd0e4c483ba237fb4","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["H4abEJviCB97nWDTt7FRW6gLvEVAmEuPC2ooUkkwA1oh",{"commitment":"confirmed"}],"result_hash":"5c87d007f22c6bb8b383faad86f13f71e1e411055ef8d4f737c87a8dcadb3a33","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["AsHp6rDRKMQHDvhBMeVa8fya5PAnqT4ao9oDTsgDRhSc",{"commitment":"confirmed"}],"result_hash":"83a48d2495684b3d0a85eff19652e91c6e3a9fd350c312477875d162f1f6fabb","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XsBNJXGu68cBH5hgFxdqZkeh8cMQv32jeEtZtYTYvfS","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"2c64bc05c7679498b6643a8f0bbb072d8c0627c44b1c09fc509b887961d00b93","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"98662867b13448b0efb7c2ebebee99f39afbf15cadc230d14ecfdd30d127ed5f","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451785530},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbWNZ12aUqHAAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"3965e413edbbf7fa7b0a565f31fec7b31cfdd62e66e43cb4fb9db4caa1579805","slot":null},{"block":null,"method":"getTokenSupply","params":["XsBNJXGu68cBH5hgFxdqZkeh8cMQv32jeEtZtYTYvfS",{"commitment":"confirmed"}],"result_hash":"c04f65da1a0f45e3291e2eefaa8acbb2225cf11698148c4849a0ea832ab30d22","slot":null},{"block":null,"method":"getAccountInfo","params":["XsBNJXGu68cBH5hgFxdqZkeh8cMQv32jeEtZtYTYvfS",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451785549},"value":{"data":["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","base64"],"executable":false,"lamports":5602800,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":677}},"result_hash":"8f33be567065fee9521d3538e52aa733840b41e33119cca3c0f7ca3720033b6e","slot":null}],"registry_entry":{"chain":"Solana","contract":"XsBNJXGu68cBH5hgFxdqZkeh8cMQv32jeEtZtYTYvfS","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T22:37:23Z","name":"Ford Motor","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"F"},"registry_hash":"d6272adf0af69a1c2c18f6a79db79616f69be8189283a420b5ba6e572aa0e4ad","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451785524,"subject":"3y9rX9M32i2zCCBGWfAEGWr62kiah4KKCaKAkeWqxNCt","ticker":"F","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"F"}},"version":1}

Signature

roxomq1tKuWysGZw+J9Wr6ZCnuvKfPAOHZLsfSXGrsk9VgOVRgfuhIG8tqKHnso99J3ZTn3ZkuegBMizlnSmCw==

API call

GET /api/attest/29361e1a52e0a3925f5e445240504d8bbcb47bafd5056c48249a713093a5a110

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.