SLVx/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":"2026-09-29T04:23:32Z","dev":false,"expires_at":"2026-09-30T04:23:32Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsxAd6okt8y1RRK6gNg7iJaqiWNiq5Md5EDf3ZrF2dm","balance":"17933850","decimals":8,"symbol":"SLVx"},"chain":"Solana","dex":"raydium-clmm","pool":"2U7hDp4f2GFotqUbkWfd6XFYPi8L33q5PdxqzH5KoAgY","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"9855521","decimals":6,"symbol":null}},"quote_share_of_supply":1.096498910901291e-6,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"4949c01a5d9a3c9e9c5b56ca9003c93fbc6328875b4223d1bf87741cf47a528e","slot":451532826},{"block":null,"method":"getAccountInfo","params":["2U7hDp4f2GFotqUbkWfd6XFYPi8L33q5PdxqzH5KoAgY",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451532827},"value":{"data":["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","base64"],"executable":false,"lamports":8493760,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"14c79aecc7b9d159c5d1650561f92ec0d60c999ed62895a77ea46c260178822f","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["BjYsDK3SScK1bQjMQ6ihAuvJA4YSkZdu2stTSqj4UA5",{"commitment":"confirmed"}],"result_hash":"b1e2a5044d9f6165478a75b4b3a1b93fc06afaf1c80a188fa06bfd6e66152418","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["14pLFSLKmnDJQwqwmotSVFYycvVnN1ciJULsTjwzYyS8",{"commitment":"confirmed"}],"result_hash":"3675c88b51ff612c985ef29051dd11beaf1edf34a8cede00dcd0955dfc417072","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XsxAd6okt8y1RRK6gNg7iJaqiWNiq5Md5EDf3ZrF2dm","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"fcf3eef79a7baa67878fd846e2cd23cad6047ea90a92af7c56ecb610e1ba142a","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"b20c1ff49ecbde464e1f6388a209f3a6ba37c79900038ad7ad7f58faa11fef6b","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451532834},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbwugGFPrnHAAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"0c2160f4d5b330da499e1b6a467915ba0c86890224061035ba5ff11b3d392980","slot":null},{"block":null,"method":"getTokenSupply","params":["XsxAd6okt8y1RRK6gNg7iJaqiWNiq5Md5EDf3ZrF2dm",{"commitment":"confirmed"}],"result_hash":"b3a3ffe9285db34b7effe208f889cd17ede706fe948b6524277825af0da745a6","slot":null},{"block":null,"method":"getAccountInfo","params":["XsxAd6okt8y1RRK6gNg7iJaqiWNiq5Md5EDf3ZrF2dm",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451532853},"value":{"data":["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","base64"],"executable":false,"lamports":5700240,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":691}},"result_hash":"29d598b63eb9643d718f5515961d0a215a28de24436dff54351eaa48c4eb131c","slot":null}],"registry_entry":{"chain":"Solana","contract":"XsxAd6okt8y1RRK6gNg7iJaqiWNiq5Md5EDf3ZrF2dm","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T04:07:50Z","name":"iShares Silver Trust","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"SLV"},"registry_hash":"bb58b47c7c8dae3da268f60868447e5a60399e422951f04e8b052526e12a0244","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451532826,"subject":"2U7hDp4f2GFotqUbkWfd6XFYPi8L33q5PdxqzH5KoAgY","ticker":"SLV","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"SLV"}},"version":1}

Signature

NB1EpD7jKdYNYJDO0Tjx2YruRWc8oAONt2OzLPow8Gr0O5dNqmmUStvFKPJOswfcVmLSXqfGV+P5qDMCzaQHCw==

API call

GET /api/attest/bc8dc8af192f38c572ddc8b758e1f6c505adffa7202653a958a8f985d9457431

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.