CSCOx/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":"2026-10-04T05:31:49Z","dev":false,"expires_at":"2026-10-05T05:31:49Z","issuer":"Backed xStocks","pool":{"base":{"address":"Xsr3pdLQyXvDJBFgpR5nexCEZwXvigb8wbPYp4YoNFf","balance":"103250362","decimals":8,"symbol":"CSCOx"},"chain":"Solana","dex":"raydium-clmm","pool":"AXyFo4i37CUfGnv5BrMUubqxNJJSRQqJuEgVoLyokmkQ","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"319762351","decimals":6,"symbol":null}},"quote_share_of_supply":4.495118200864179e-6,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"f8e2aa8bcba45511285ec808a232ca30b4e791649e8d1d2a42a0b7fd5e51be94","slot":453162911},{"block":null,"method":"getAccountInfo","params":["AXyFo4i37CUfGnv5BrMUubqxNJJSRQqJuEgVoLyokmkQ",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":453162913},"value":{"data":["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","base64"],"executable":false,"lamports":11637121,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"caa80505ce57ca63c387bd08e55cb4813cf2c9faf8a84da7f2839f997dbf5338","slot":453162913},{"block":null,"method":"getTokenAccountBalance","params":["HjFA8SWfA4uxgxrmS2zVHmCWocqrhGW6dhUX3CfP5ZjT",{"commitment":"confirmed"}],"result_hash":"dd051dcadc6def7fb3b637535362701d0a31ff66fce43df3e58b4bf818332117","slot":453162913},{"block":null,"method":"getTokenAccountBalance","params":["5CrWVXtJULgFsEwbK9bbL9D2nTzQfjLrgRBAF5rdpp6x",{"commitment":"confirmed"}],"result_hash":"520890b0bd4a9a0592a357353564e7fa182a7b57d65cb2b34af5afe4568929f6","slot":453162915},{"block":null,"method":"getMultipleAccounts","params":[["Xsr3pdLQyXvDJBFgpR5nexCEZwXvigb8wbPYp4YoNFf","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"4691262a8abc715786bb2b59a4af38f2bf45fd841b78b587122c101eb019e3d8","slot":453162916},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"c9a45a15f3c573f8a9ac20463cee989305c6bc06caa1fd17609d9763c5846953","slot":453162917},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":453162923},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbHN0JQ8ywHQAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":535328983427,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"23c8f8c8e6d7acc0609d31caf21d3f01e65b62e9233fa82b7197fc53793354da","slot":453162923},{"block":null,"method":"getTokenSupply","params":["Xsr3pdLQyXvDJBFgpR5nexCEZwXvigb8wbPYp4YoNFf",{"commitment":"confirmed"}],"result_hash":"164dcf0ea40a6014e685bb437f3e71250c0402713a41dd594eeed078ef31bbaf","slot":453162940},{"block":null,"method":"getAccountInfo","params":["Xsr3pdLQyXvDJBFgpR5nexCEZwXvigb8wbPYp4YoNFf",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":453162956},"value":{"data":["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","base64"],"executable":false,"lamports":5609760,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":678}},"result_hash":"bcda1c2f978051a37be32a448b5d12e30562cc1552f7539d9ed5f263fd27c099","slot":453162956}],"registry_entry":{"chain":"Solana","contract":"Xsr3pdLQyXvDJBFgpR5nexCEZwXvigb8wbPYp4YoNFf","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-10-04T05:14:21Z","name":"Cisco","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"CSCO"},"registry_hash":"f94fc48d8ff44ad0f14377941089c80a9b74ddf1e078265c68f19dc38a6278ed","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":453162911,"subject":"AXyFo4i37CUfGnv5BrMUubqxNJJSRQqJuEgVoLyokmkQ","ticker":"CSCO","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"CSCO"}},"version":1}

Signature

P0w90eLSmngooD1W14tuCZqmoJ/EEEANxH6FJUcgZ/YtN37cmDM7/ZwcVBDX3as9Tc3DBWT4j1vn8R2/8fogCg==

API call

GET /api/attest/2d348305626e6ede1f8c15d340dbb79b54ec06dbcf4a896ba55799e0da14afab

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.