GMEx/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":"2026-09-30T00:16:19Z","dev":false,"expires_at":"2026-10-01T00:16:19Z","issuer":"Backed xStocks","pool":{"base":{"address":"Xsf9mBktVB9BSU5kf4nHxPq5hCBJ2j2ui3ecFGxPRGc","balance":"456590785238","decimals":8,"symbol":"GMEx"},"chain":"Solana","dex":"orca-whirlpool","pool":"hSQxf9L7Tpwf1PKjWWSbnew2vyTPpGrfWwNa4gq2n2x","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"226374965605","decimals":6,"symbol":null}},"quote_share_of_supply":0.006342709377357788,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"7a44db8283ba1c80e1588fd88d6cd9aeacf090fb0fd3357054bea84271fc3dd7","slot":451800142},{"block":null,"method":"getAccountInfo","params":["hSQxf9L7Tpwf1PKjWWSbnew2vyTPpGrfWwNa4gq2n2x",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451800143},"value":{"data":["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","base64"],"executable":false,"lamports":5435760,"owner":"whirLbMiicVdio4qvUfM5KAg6Ct8VwpYzGff3uctyCc","rentEpoch":18446744073709551615,"space":653}},"result_hash":"90a3f3a7f469aae738cbb0f71fd73359c3ecc95584e9e11aab7dee73614293df","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["8T1wnPCX1Wzg7x9nyPKimxn9vFHzt6VfUCMAFcRPA24C",{"commitment":"confirmed"}],"result_hash":"cf770ae5b69225a2d8671cad99715531b76bda25b98b417b523e5d9451eed0cc","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["DYVwasvF7Vvvnx8nL9oYTYBAX1pMBt7H5sGSwLXRZhn4",{"commitment":"confirmed"}],"result_hash":"f12fe1fc536c053fa332a648580bc4f5f297c7f4d6a113bb31402823ba34876b","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["Xsf9mBktVB9BSU5kf4nHxPq5hCBJ2j2ui3ecFGxPRGc","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"25290c427254cf400efe5db05db0921bf122e825afb7b9020f597f5954392e56","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"705f7509e81106746113cbbac4aa0d2449cf0ff561ccc65e2c0881c13434cc56","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451800150},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbNBfDSZMpHAAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"8e5036a6cf15f22ad6f201dd66d11d20e6779073878573e12afe0a7cf5b62e54","slot":null},{"block":null,"method":"getTokenSupply","params":["Xsf9mBktVB9BSU5kf4nHxPq5hCBJ2j2ui3ecFGxPRGc",{"commitment":"confirmed"}],"result_hash":"630cd4f51dd233e8ae203a6e4d4736d95c2f8cb40bb8a1223ad6b7388ea66c4a","slot":null},{"block":null,"method":"getAccountInfo","params":["Xsf9mBktVB9BSU5kf4nHxPq5hCBJ2j2ui3ecFGxPRGc",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451800170},"value":{"data":["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","base64"],"executable":false,"lamports":5616720,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":679}},"result_hash":"13dc365cfb7d4831277835a45b2ce04e6daf82152e78a57fc7fc1e5c86036fbf","slot":null}],"registry_entry":{"chain":"Solana","contract":"Xsf9mBktVB9BSU5kf4nHxPq5hCBJ2j2ui3ecFGxPRGc","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T23:37:23Z","name":"Gamestop","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"GME"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451800142,"subject":"hSQxf9L7Tpwf1PKjWWSbnew2vyTPpGrfWwNa4gq2n2x","ticker":"GME","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"GME"}},"version":1}

Signature

uvtjgzM53mxgzGbXuc++JM49xVura1zVhW3V+lJf2ZX7iG9jmnGOWv2gnAsalgwXRO//GFHu0LEQQs1Bad5kBQ==

API call

GET /api/attest/d1d04fbdb4ddd8d3a11daf9299fba6a84847a15ba0cf5661e5b6ad028e41b1d5

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.