SPYx/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":"2026-10-05T00:23:32Z","dev":false,"expires_at":"2026-10-06T00:23:32Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsoCS1TfEyfFhfvj8EtZ528L3CaKBDBRqRapnBbDF2W","balance":"168921641860","decimals":8,"symbol":"SPYx"},"chain":"Solana","dex":"raydium-clmm","pool":"7a8xxAJBELDo6P9dikSYctdw6ce8F4mWr3ahcAD8Ao49","quote":{"address":"6GmAFSYs4gk3FDao5FzzySQpPZaWsa4rUJHacpMpUNgx","balance":"4230297147813152","decimals":9,"symbol":null}},"quote_share_of_supply":0.01773811716661128,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"412efb6b5619a9a2651fae0ec1d0c8b480360b16f16bfa340fcf50b3f92d8590","slot":453416399},{"block":null,"method":"getAccountInfo","params":["7a8xxAJBELDo6P9dikSYctdw6ce8F4mWr3ahcAD8Ao49",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":453416401},"value":{"data":["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","base64"],"executable":false,"lamports":11638120,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"0ac95b372841d4324c457cea92daddb2a6a3e6e6bdd178c3fae62faef1656708","slot":453416401},{"block":null,"method":"getTokenAccountBalance","params":["64o3S5MH7iTZLYG5x79Q2aFNhbn4TERCoiVHXCAVNhhn",{"commitment":"confirmed"}],"result_hash":"3595244285fef3aebaa8980abb37e494bbb22994ee9c93970661dbc43b829794","slot":453416402},{"block":null,"method":"getTokenAccountBalance","params":["gAqy69bjRT9Sx2tp9Fihfinc6eWHFiwdB4sdjvKtvwH",{"commitment":"confirmed"}],"result_hash":"9a555d77bcf99e6816f07ce7edf66255aa55500e678b97caf49f86bc66d141e0","slot":453416403},{"block":null,"method":"getMultipleAccounts","params":[["XsoCS1TfEyfFhfvj8EtZ528L3CaKBDBRqRapnBbDF2W","6GmAFSYs4gk3FDao5FzzySQpPZaWsa4rUJHacpMpUNgx"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"ce2109ae220b45a8bafa33824a4a675613ff8214e846140dd95ab790751129f4","slot":453416404},{"block":null,"method":"getTokenSupply","params":["6GmAFSYs4gk3FDao5FzzySQpPZaWsa4rUJHacpMpUNgx",{"commitment":"confirmed"}],"result_hash":"ee5c6a1c4661d75e80acc727422ac72528a42c52763bbc3a7e20bfae20948385","slot":453416405},{"block":null,"method":"getAccountInfo","params":["6GmAFSYs4gk3FDao5FzzySQpPZaWsa4rUJHacpMpUNgx",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":453416406},"value":{"data":["AAAAAD5PhCp9CwyeyOJOoDoxyfh5o13DBHWJGqruXZ6wCC/5yxHreh2uHwsJAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==","base64"],"executable":false,"lamports":46705822553,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"6efeb4d31a6c472b6bdd8c7dc4c5891c6651e188513124f1a0c5a85594d4c5ad","slot":453416406},{"block":null,"method":"getTokenSupply","params":["XsoCS1TfEyfFhfvj8EtZ528L3CaKBDBRqRapnBbDF2W",{"commitment":"confirmed"}],"result_hash":"de445eb7e1d04e6761556187ace5677e2539eff18d1036278475f0c7e79482d1","slot":453416424},{"block":null,"method":"getAccountInfo","params":["XsoCS1TfEyfFhfvj8EtZ528L3CaKBDBRqRapnBbDF2W",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":453416426},"value":{"data":["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","base64"],"executable":false,"lamports":36662853,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":676}},"result_hash":"baa05a09ebcee3c7a82b4b27127d5f1741eaac63b6be0859bcdc569e04e3118e","slot":453416426}],"registry_entry":{"chain":"Solana","contract":"XsoCS1TfEyfFhfvj8EtZ528L3CaKBDBRqRapnBbDF2W","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-10-05T00:14:21Z","name":"SP500","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"SPY"},"registry_hash":"f9fa35df55be54dbd15a800c677903a7d2a4fb40b4a7f9df2794f5c11902f81e","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":453416399,"subject":"7a8xxAJBELDo6P9dikSYctdw6ce8F4mWr3ahcAD8Ao49","ticker":"SPY","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"SPY"}},"version":1}

Signature

uuH9RjmM1Bh2EKW2dqofZVUdHpZw32K/KNeRyvhe6DRbagHKyd94EnJ8gzu77Q3TmbUaox2dFO5bPx6OA4ZpDw==

API call

GET /api/attest/eaf591f0af7044ef586e10d6f871a64205f10dda9b933149bedadc38ff0567ea

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.