NVDAx/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":"2026-10-03T04:37:43Z","dev":false,"expires_at":"2026-10-04T04:37:43Z","issuer":"Backed xStocks","pool":{"base":{"address":"Xsc9qvGR1efVDFGLrVsmkzv3qi45LTBjeUKSPmx9qEh","balance":"90037142550","decimals":8,"symbol":"NVDAx"},"chain":"Solana","dex":"orca-whirlpool","pool":"6R4r93V5fcMzc13CL2enEepDSYcr4Qx3ptZBDwudTXCo","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"361389217294","decimals":6,"symbol":null}},"quote_share_of_supply":0.0028025587132239974,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"0605f469ff552f582ff047776ced1df12d13e9030ed859040b88dcfe4155c79c","slot":452827545},{"block":null,"method":"getAccountInfo","params":["6R4r93V5fcMzc13CL2enEepDSYcr4Qx3ptZBDwudTXCo",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452827546},"value":{"data":["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","base64"],"executable":false,"lamports":5457138,"owner":"whirLbMiicVdio4qvUfM5KAg6Ct8VwpYzGff3uctyCc","rentEpoch":18446744073709551615,"space":653}},"result_hash":"4064cd63deaa227f8db42ba1d081790bfbfed1fe0ddbe86ff14a40b3c4107140","slot":452827546},{"block":null,"method":"getTokenAccountBalance","params":["5TSHEwRAgHLTYkchrUNiKUL2RvuZgdh3vExbMptWrHoX",{"commitment":"confirmed"}],"result_hash":"bf9a48dc99de0a6e60cc1c9a749556c1d08d44161815264c468b1ca5a1fbe538","slot":452827547},{"block":null,"method":"getTokenAccountBalance","params":["FaHQ9Ny2U2RkcdapsKVr9pvnt4Mg7n92NdKnvyRzuibH",{"commitment":"confirmed"}],"result_hash":"8422e0f4002aef6175a458797640b0c8b0f3ba23c93017751025665d590a2d4c","slot":452827548},{"block":null,"method":"getMultipleAccounts","params":[["Xsc9qvGR1efVDFGLrVsmkzv3qi45LTBjeUKSPmx9qEh","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"cebdde29142c1ab0bc7ce0b45ad6234ea797653a21be410ec2fe3cb343063c63","slot":452827550},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"8eda581adb880cc3f3b7d8561169c0b27a5df6582d791c42acffd6b42adcf9e5","slot":452827551},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452827552},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbhdmgVXMBHgAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":535325803497,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"69940bc0e74f728a54d6506922360ebec9e214917271a93297b0f98339bb51a3","slot":452827552},{"block":null,"method":"getTokenSupply","params":["Xsc9qvGR1efVDFGLrVsmkzv3qi45LTBjeUKSPmx9qEh",{"commitment":"confirmed"}],"result_hash":"312bd602a2f093762590722d38303be40581560016e5a14c0ec18fa7fecb6f42","slot":452827569},{"block":null,"method":"getAccountInfo","params":["Xsc9qvGR1efVDFGLrVsmkzv3qi45LTBjeUKSPmx9qEh",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452827570},"value":{"data":["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","base64"],"executable":false,"lamports":621944468,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":679}},"result_hash":"1dbb29253c9ae3cd47a759f87f621af2aaf02c18c663d099fec5d3a6e4dce8cc","slot":452827570}],"registry_entry":{"chain":"Solana","contract":"Xsc9qvGR1efVDFGLrVsmkzv3qi45LTBjeUKSPmx9qEh","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-10-03T04:09:51Z","name":"NVIDIA","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"NVDA"},"registry_hash":"69180a9d1971ea57866162e5b63d14efc237bb578c5e9f857f46f52069325ecf","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":452827545,"subject":"6R4r93V5fcMzc13CL2enEepDSYcr4Qx3ptZBDwudTXCo","ticker":"NVDA","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"NVDA"}},"version":1}

Signature

EpARDBzfUkdJAeHx1cMP1SoANKN+S78WMfeM8rPhBVRua5URRS8YdWFXMBTz9urZ/h0ZqekT0/SBJDZw4kErDQ==

API call

GET /api/attest/eee4cb0ec7db6153258a986bf1f8b9e0e955d04b4a84b3860330f8d3711ef621

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.