PGx/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":"2026-09-30T20:29:11Z","dev":false,"expires_at":"2026-10-01T20:29:11Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsYdjDjNUygZ7yGKfQaB6TxLh2gC6RRjzLtLAGJrhzV","balance":"998338843","decimals":8,"symbol":"PGx"},"chain":"Solana","dex":"raydium-clmm","pool":"2ENFJDyjcPC2jAtGkiZEoNNswxNE9kwTvGVbndZkV2RP","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"1379829340","decimals":6,"symbol":null}},"quote_share_of_supply":0.00009366696148621596,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"5078b22c7a29815a48347513b9cffc394f610e52934579975b2e370b3161b0da","slot":452072197},{"block":null,"method":"getAccountInfo","params":["2ENFJDyjcPC2jAtGkiZEoNNswxNE9kwTvGVbndZkV2RP",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452072198},"value":{"data":["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","base64"],"executable":false,"lamports":11637136,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"37e62075631bc32ea1fce328720378d6e09f5b9bc8b568a97e3801ab23138c67","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["EWZP6EhPd5iyPQuBbnc5RV7sFMXENy22THsMX4VU3ZZB",{"commitment":"confirmed"}],"result_hash":"4fa3e41c4006cdcca10865c914b6218fcaf58d8c90a0853572f846a399e8d777","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["5fYmruDNMcDT3RNTV57BGpws6y2j2eXYG6FKTy4sYcLZ",{"commitment":"confirmed"}],"result_hash":"0130af537cca8526c17e74ba420c3beebc665045a557b81beb4abf8a7173cd2c","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XsYdjDjNUygZ7yGKfQaB6TxLh2gC6RRjzLtLAGJrhzV","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"950b0d61201cd1e2e5761f70bac027b09bfa5f1fcf8ca0e28a7d802c98724feb","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"890ec9bff945e20788b1237812c7ef0ea8ad59d54f66ec669c6e15c8f836ce00","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452072204},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbM7huEihSGwAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"9b90d14e13301cb8220d85235d6e0ddc13d43e82cde4e945e36b6c5dfddc2a61","slot":null},{"block":null,"method":"getTokenSupply","params":["XsYdjDjNUygZ7yGKfQaB6TxLh2gC6RRjzLtLAGJrhzV",{"commitment":"confirmed"}],"result_hash":"abd1cae4782b92879a813237b64c8421c0e4665e3f51a8041bb3c981dee527a7","slot":null},{"block":null,"method":"getAccountInfo","params":["XsYdjDjNUygZ7yGKfQaB6TxLh2gC6RRjzLtLAGJrhzV",{"commitment":"confirmed","enc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xStocks","last_checked":"2026-09-30T20:20:14Z","name":"Procter & Gamble","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"PG"},"registry_hash":"a99ed049a73be4334c4eedf803c1905dec813813d0057448e3e14e6a76807dda","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":452072197,"subject":"2ENFJDyjcPC2jAtGkiZEoNNswxNE9kwTvGVbndZkV2RP","ticker":"PG","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"PG"}},"version":1}

Signature

ObumtcFwEf6BL1Yku1W81G4iKI6tDUj9Z08l/DNsOsFPh3FPaOVzqvtO0/nbWLkM4hCrE4X/8vGRxMUqLfG6Bw==

API call

GET /api/attest/7dff7c93e8200c28b1a4f38cab334957b81d4778215cb1a99da56a11096e0ef1

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.