IBMx/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":"2026-09-29T05:41:10Z","dev":false,"expires_at":"2026-09-30T05:41:10Z","issuer":"Backed xStocks","pool":{"base":{"address":"XspwhyYPdWVM8XBHZnpS9hgyag9MKjLRyE3tVfmCbSr","balance":"781095165","decimals":8,"symbol":"IBMx"},"chain":"Solana","dex":"meteora-dlmm","pool":"JCcH5D8TZ3JkeKpaMpMHNtS4kZXAdnZuN2gjD3KPqrak","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"1319162741","decimals":6,"symbol":null}},"quote_share_of_supply":0.00014351042058165011,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"8ba633b8bffa930d0c3a6f63cdcce110473e886dd1e2bace174e5052fe8026c8","slot":451550234},{"block":null,"method":"getAccountInfo","params":["JCcH5D8TZ3JkeKpaMpMHNtS4kZXAdnZuN2gjD3KPqrak",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451550252},"value":{"data":["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","base64"],"executable":false,"lamports":7182720,"owner":"LBUZKhRxPF3XUpBCjp4YzTKgLccjZhTSDM9YuVaPwxo","rentEpoch":18446744073709551615,"space":904}},"result_hash":"d921bdb810a05c56e0ffeacd31e089d3baa458b3893af850245befe681c0fccd","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["2pNyztbbaskTWKoKq8qbMQXFMvUrn4qDjCjvLxmSYSYa",{"commitment":"confirmed"}],"result_hash":"e1fc5c922dd1d9bde0e7a0aabba244e863269ec8f507d628ad0eb03d82ff4b39","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["Fn4jb1ELTtu5Ct8upPo7iFA29UfTqMfqTeE5Ve9dyL3Z",{"commitment":"confirmed"}],"result_hash":"134a8e26f4c3b1f17d2f83cbe487b64cbddfde458bbe5981fe38e5a62fddaa83","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XspwhyYPdWVM8XBHZnpS9hgyag9MKjLRyE3tVfmCbSr","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"5d8cb78115167e1423164e639d6097aa4542e1a87f82900fd9d134868cb49b1f","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"408198fd25e7c3b1cc7ad35453296e34faafbe00e07d4987f2ef0aecbbfa3171","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451550262},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbCLzmD0WtHAAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"e5acabe2f54e620d85ee9eb64d4477b58fa4ae800f51841faa14050a8dc35631","slot":null},{"block":null,"method":"getTokenSupply","params":["XspwhyYPdWVM8XBHZnpS9hgyag9MKjLRyE3tVfmCbSr",{"commitment":"confirmed"}],"result_hash":"82e9ef703fff0e88cedc668c96d433e4adf582f7bcdbe9b87be3e0c4156348f7","slot":null},{"block":null,"method":"getAccountInfo","params":["XspwhyYPdWVM8XBHZnpS9hgyag9MKjLRyE3tVfmCbSr",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451550282},"value":{"data":["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","base64"],"executable":false,"lamports":5776800,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":702}},"result_hash":"39cc7c453ced23a2f99defc6d01ded3c3a09cc01e4877340d8ddedd9694c57f2","slot":null}],"registry_entry":{"chain":"Solana","contract":"XspwhyYPdWVM8XBHZnpS9hgyag9MKjLRyE3tVfmCbSr","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T05:07:50Z","name":"International Business Machines","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"IBM"},"registry_hash":"f7ab765a4c4a69f9a4faba54866182981ca1db39379f472ba61a3d30b5348853","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451550234,"subject":"JCcH5D8TZ3JkeKpaMpMHNtS4kZXAdnZuN2gjD3KPqrak","ticker":"IBM","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"IBM"}},"version":1}

Signature

ZGX3QasORVyySg3MpedWg9qs7oCQ8K9dAh1QLDZTu7NToTfTXk0LjknvUE00BdXu8b2jqb5dNExkNQqH+WQkCQ==

API call

GET /api/attest/2847b3757cd655229e0fa2423fc519fb7361f8647afd2ba7aac7876fa3bae87f

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.