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":"2026-10-07T22:58:50Z","dev":false,"expires_at":"2026-10-08T22:58:50Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsxAd6okt8y1RRK6gNg7iJaqiWNiq5Md5EDf3ZrF2dm","balance":"933402523","decimals":8,"symbol":"SLVx"},"chain":"Solana","dex":"orca-whirlpool","pool":"nSs4EWNvgiVhu45riDkkVUbzjsexYm27r6Q9hvJWPLp","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"501240141","decimals":6,"symbol":null}},"quote_share_of_supply":0.00005706944475573391,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"843a33a7e5bac6bb0b1d0b8ca289812d72164e638a5100831439e44c9d930f6b","slot":454363297},{"block":null,"method":"getAccountInfo","params":["nSs4EWNvgiVhu45riDkkVUbzjsexYm27r6Q9hvJWPLp",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":454363298},"value":{"data":["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","base64"],"executable":false,"lamports":3967480,"owner":"whirLbMiicVdio4qvUfM5KAg6Ct8VwpYzGff3uctyCc","rentEpoch":18446744073709551615,"space":653}},"result_hash":"cbe6f28a6e5a854a8b67a9042ef7337edef0206427cfa26b44c2c647a3800c4b","slot":454363298},{"block":null,"method":"getTokenAccountBalance","params":["75ZTKiXGkbNDSDFrTK5SneoST8HnTU3z1QiKkmwL8We3",{"commitment":"confirmed"}],"result_hash":"7fd2f995d7dae1bf386a544b8bd4e818d93586a60afdc6d266dd3e94689332ad","slot":454363299},{"block":null,"method":"getTokenAccountBalance","params":["9DYCv5dJoTrWfN9zp6sdtjAEzoPbigF1YiU2z2uziQMZ",{"commitment":"confirmed"}],"result_hash":"5d14030c09d9b092c1af553b892f6b1c987da9cc60b4b3ff4099efdfae735aab","slot":454363300},{"block":null,"method":"getMultipleAccounts","params":[["XsxAd6okt8y1RRK6gNg7iJaqiWNiq5Md5EDf3ZrF2dm","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"1c0f59d72006945aae0506b072a5a121aa397ea4557f793fbf008d3ad96ef4db","slot":454363301},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"75b7f8c2a1dc4444bb36d9554b47ffb5a5194d117613ab5f8e6d85b85fb30c3c","slot":454363306},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":454363307},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmba1WZPBnUGwAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":541216720869,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"649f694e13de411dec66a1c7262c3cc424d7c717b3659a7202ce8a27026af81b","slot":454363307},{"block":null,"method":"getTokenSupply","params":["XsxAd6okt8y1RRK6gNg7iJaqiWNiq5Md5EDf3ZrF2dm",{"commitment":"confirmed"}],"result_hash":"5ba56a30d999915af270ff8d734eb43461a9a733e95ad1afd9755876493c97e7","slot":454363322},{"block":null,"method":"getAccountInfo","params":["XsxAd6okt8y1RRK6gNg7iJaqiWNiq5Md5EDf3ZrF2dm",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":454363323},"value":{"data":["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","base64"],"executable":false,"lamports":5700240,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":691}},"result_hash":"e77b7d1e22b25588553554b7b22fc7b9d1d8dcecd3342c581f130dbabccaf6cd","slot":454363323}],"registry_entry":{"chain":"Solana","contract":"XsxAd6okt8y1RRK6gNg7iJaqiWNiq5Md5EDf3ZrF2dm","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-10-07T22:55:09Z","name":"iShares Silver Trust","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"SLV"},"registry_hash":"6357b1b1dbc3f6730054dd0ceb8e9d26d75eba26c2f1e68eb99a3d437d327638","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":454363297,"subject":"nSs4EWNvgiVhu45riDkkVUbzjsexYm27r6Q9hvJWPLp","ticker":"SLV","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"SLV"}},"version":1}

Signature

Wo+Kolm4obZ0SM27BDS40+iwm5RMx8focovoqQvmYGr8cOlntOl9aZMCKO5sOz540d/h67bQPJiCPM+B6j0ZCw==

API call

GET /api/attest/3d5637a1db051b75b36ea34a3c65313ba625d60d4e8930c866cbdcb19215658e

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.