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":"2026-09-30T00:13:35Z","dev":false,"expires_at":"2026-10-01T00:13:35Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsoCS1TfEyfFhfvj8EtZ528L3CaKBDBRqRapnBbDF2W","balance":"200075198435","decimals":8,"symbol":"SPYx"},"chain":"Solana","dex":"raydium-clmm","pool":"6truu3rZuiB9rKQg4VYC3Dt3QwV7DgwGqXrYUcrvnDDE","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"1806308131722","decimals":6,"symbol":null}},"quote_share_of_supply":0.021009466434310495,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"45cc06961c6ed6d6e586fc8d005747b57748962842b9b5873470485640788fc8","slot":451799529},{"block":null,"method":"getAccountInfo","params":["6truu3rZuiB9rKQg4VYC3Dt3QwV7DgwGqXrYUcrvnDDE",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451799530},"value":{"data":["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","base64"],"executable":false,"lamports":11648121,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"9ec8506788a5b3919d4bc1f3d6ddc16dfb72603aac19b8fac2c7636416de07ba","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["3EmW8zJDHrfgwpQJAt1oD6nxgQZLUwrCRSKk8Gr3iKRF",{"commitment":"confirmed"}],"result_hash":"ec1df9ec63d6282d0412888ed71bb182dfec706bcfea8da1f134acfb18fbda8d","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["CiQuPAfYp5v82vijk6u7wqFnaZqtGdJfUUSjDKAtT9ML",{"commitment":"confirmed"}],"result_hash":"9a46869e105b12c336136f6988e7d3024f6ca55673e29014fed6e5c98fd442b6","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XsoCS1TfEyfFhfvj8EtZ528L3CaKBDBRqRapnBbDF2W","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"20da7359bf9d6f314cad29441b036efaf3b3821bb25df513480b09d5617e343c","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"4823c9e1677ad498844e1878d60e2a82e08b571308298821318217d7ef7fe121","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451799540},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmb4+cNwJQpHAAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"7cf30cbbc2adc1bf9df67d0feba6e4eb56e81c338055c3490237287665ad67a0","slot":null},{"block":null,"method":"getTokenSupply","params":["XsoCS1TfEyfFhfvj8EtZ528L3CaKBDBRqRapnBbDF2W",{"commitment":"confirmed"}],"result_hash":"d6d483a0819385f2e7a8fd658970b60423450c10d537598383ae1d2b4ca526ff","slot":null},{"block":null,"method":"getAccountInfo","params":["XsoCS1TfEyfFhfvj8EtZ528L3CaKBDBRqRapnBbDF2W",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451799559},"value":{"data":["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","base64"],"executable":false,"lamports":36662853,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":676}},"result_hash":"823c27c1e6e9dc750c9356152a8815c869bc9cf5fcae7f6d4bdc71be0279214c","slot":null}],"registry_entry":{"chain":"Solana","contract":"XsoCS1TfEyfFhfvj8EtZ528L3CaKBDBRqRapnBbDF2W","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T23:37:23Z","name":"SP500","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"SPY"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451799529,"subject":"6truu3rZuiB9rKQg4VYC3Dt3QwV7DgwGqXrYUcrvnDDE","ticker":"SPY","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"SPY"}},"version":1}

Signature

3QLQj44yIB+WW7W+79CFsvZPk6CGquM8HgNcGEfrpZRy03bvoFIpQ2ZOQSAIh7m/S/TkUQ5PNaUO9+cGndJjCQ==

API call

GET /api/attest/5af97a907cd3bfd47b4442815e91044a62be5180ca87dc702ff3a8dea7354101

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.