JPMx/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":"2026-09-30T00:24:15Z","dev":false,"expires_at":"2026-10-01T00:24:15Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsMAqkcKsUewDrzVkait4e5u4y8REgtyS7jWgCpLV2C","balance":"289869246","decimals":8,"symbol":"JPMx"},"chain":"Solana","dex":"raydium-clmm","pool":"BxT1o9XsnbAPpQnRgfBoh77gcQH4EarYMBwHTcDhVQca","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"845080974","decimals":6,"symbol":null}},"quote_share_of_supply":0.000059184600251872256,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"4521929e9e7ff3fae595b609d717b04914d3ae7dde5bfd430fc55498201dcb4f","slot":451801923},{"block":null,"method":"getAccountInfo","params":["BxT1o9XsnbAPpQnRgfBoh77gcQH4EarYMBwHTcDhVQca",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451801926},"value":{"data":["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","base64"],"executable":false,"lamports":11647125,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"71ed1ac5d451e2afc175a7b8e1a2eaba435176c9570f406b61546352bea35bc3","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["BA2excjMh7LqxsjZtxSTUHLByqgZFHJM2FQESBWrKbAY",{"commitment":"confirmed"}],"result_hash":"6f3cab79d8d6dc93c7717f8461db4f1852148be4f0487b30df9d95426d570922","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["9XGJrktWeKa8gBxaLvJXEod27A9LTQoV69VBw8r2FqVv",{"commitment":"confirmed"}],"result_hash":"5eb3c01223f044e1aec5fe980c31cc2a8ddcefb48b16615437cfbfdab1905157","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XsMAqkcKsUewDrzVkait4e5u4y8REgtyS7jWgCpLV2C","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"fced64bdae48cc0ac4026a01563a4ecdd5cdaa94bde6020e4e36c8a7545728a8","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"bb5b499fc5dddb40e3a664f9a408820c6c341bb7c2887696e3183ca1c2392048","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451801931},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmby/ZQSnb0GwAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"77c3da83181756e911e70aa252f2e146d617e353fb4a5dba4a13b57a87f68b4a","slot":null},{"block":null,"method":"getTokenSupply","params":["XsMAqkcKsUewDrzVkait4e5u4y8REgtyS7jWgCpLV2C",{"commitment":"confirmed"}],"result_hash":"8c4ab532ca5f17e13184e8ebf5868451c94ca70f42cd99311ff39c2fc9cd08fb","slot":null},{"block":null,"method":"getAccountInfo","params":["XsMAqkcKsUewDrzVkait4e5u4y8REgtyS7jWgCpLV2C",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451801950},"value":{"data":["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","base64"],"executable":false,"lamports":5658480,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":685}},"result_hash":"c85e70b3d02a0a80be71b8d70f4d13215ae4e2850e04ebb220c17e28674fd6f6","slot":null}],"registry_entry":{"chain":"Solana","contract":"XsMAqkcKsUewDrzVkait4e5u4y8REgtyS7jWgCpLV2C","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T23:37:23Z","name":"JPMorgan Chase","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"JPM"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451801923,"subject":"BxT1o9XsnbAPpQnRgfBoh77gcQH4EarYMBwHTcDhVQca","ticker":"JPM","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"JPM"}},"version":1}

Signature

+r9CAGu3pwmejI0de34OpUVGZKMFtfv6Yzgvw6Bkkjt9kHmTRuiACKzg7+Ycj5E0lzfoNU1w7GNDCINZ7nRODw==

API call

GET /api/attest/c9955ead37340eca857e1a3458d3fea75927360f99b677bcd3aa3023d88f596f

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.