VTIx/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":"2026-10-03T17:07:44Z","dev":false,"expires_at":"2026-10-04T17:07:44Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsssYEQjzxBCFgvYFFNuhJFBeHNdLWYeUSP8F45cDr9","balance":"146778180","decimals":8,"symbol":"VTIx"},"chain":"Solana","dex":"meteora-dlmm","pool":"5NMrGLireBuyT49sFm7tYj7KL1Psbd1mMsJUN8nLzj1T","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"978360607","decimals":6,"symbol":null}},"quote_share_of_supply":0.000029776074167652205,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"6e162dd718fcbc3f07df8fe3df0d5c85eab5d9adaa194b3647609e42479d2a72","slot":452996176},{"block":null,"method":"getAccountInfo","params":["5NMrGLireBuyT49sFm7tYj7KL1Psbd1mMsJUN8nLzj1T",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452996177},"value":{"data":["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","base64"],"executable":false,"lamports":7182720,"owner":"LBUZKhRxPF3XUpBCjp4YzTKgLccjZhTSDM9YuVaPwxo","rentEpoch":18446744073709551615,"space":904}},"result_hash":"4d0f37e650b651b88752402e03694fb09ff102c9d634acd2b265ef70377e9d48","slot":452996177},{"block":null,"method":"getTokenAccountBalance","params":["EpvAYffeBfp54Xf73B7kvautyPScQvsVX9Gi3eb5wGGS",{"commitment":"confirmed"}],"result_hash":"b8f5fd87c74d0c03235c570ce094584f149955df1cf33209c750a340f078b102","slot":452996178},{"block":null,"method":"getTokenAccountBalance","params":["4BsSiLcCapFy3CXnYd3KzbncahtXJFVnX41pYkF6Q2bx",{"commitment":"confirmed"}],"result_hash":"d1de2472e882c7bc53c941147a8247ddaeafe1f9bbd98c2c71ebe8aa50aee8fc","slot":452996179},{"block":null,"method":"getMultipleAccounts","params":[["XsssYEQjzxBCFgvYFFNuhJFBeHNdLWYeUSP8F45cDr9","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"47e6204274c4f35a14d2f83b228f2e0d07dc927871596096358712a13e881635","slot":452996179},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"60a218ae7d6d3c724ed95fd3f0add04ce9a3aa0183761322345dafd1d638dcd2","slot":452996180},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452996185},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmb3QnniN7bHQAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":535328983427,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"e3cfcee5544797e2f56cf7456ee6d25f02d711ed4ec9d14c04904c744dd743f6","slot":452996185},{"block":null,"method":"getTokenSupply","params":["XsssYEQjzxBCFgvYFFNuhJFBeHNdLWYeUSP8F45cDr9",{"commitment":"confirmed"}],"result_hash":"2ac8b66e59bc9c79b4831c72b6d292e0b4e7dce91a421ee433157ea52e67f6cf","slot":452996204},{"block":null,"method":"getAccountInfo","params":["XsssYEQjzxBCFgvYFFNuhJFBeHNdLWYeUSP8F45cDr9",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452996204},"value":{"data":["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","base64"],"executable":false,"lamports":5616720,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":679}},"result_hash":"2d41a30fe9f2c32c49c98c0e3b9f07e9f43858c8a5d9d4cc95361c2921b5d8a2","slot":452996204}],"registry_entry":{"chain":"Solana","contract":"XsssYEQjzxBCFgvYFFNuhJFBeHNdLWYeUSP8F45cDr9","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-10-03T16:12:38Z","name":"Vanguard","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"VTI"},"registry_hash":"3612571438e61a12620835aaecd4cd679ea080395a3e967ec80d6affccd4f074","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":452996176,"subject":"5NMrGLireBuyT49sFm7tYj7KL1Psbd1mMsJUN8nLzj1T","ticker":"VTI","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"VTI"}},"version":1}

Signature

lmfQUGHLoyOzhk2apzO/nE9c5b6UhoBI2I7Gu02J1iP+rF3MwLIE8gJvv5aAEYMAIg+QRM+EhmE3P29WOZofBg==

API call

GET /api/attest/f06468ca48e144e1f3e86f3e630d539cc1913024c299df81fffba03cd7734470

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.