CMCSAx/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":"2026-09-30T00:27:06Z","dev":false,"expires_at":"2026-10-01T00:27:06Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsvKCaNsxg2GN8jjUmq71qukMJr7Q1c5R2Mk9P8kcS8","balance":"1726671115","decimals":8,"symbol":"CMCSAx"},"chain":"Solana","dex":"meteora-dlmm","pool":"B7QResixJo31JzujU1WWHpijYPmSJ2t5o3PEtYrrGHXT","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"626926802","decimals":6,"symbol":null}},"quote_share_of_supply":0.00003264040566412961,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"18a38d47de7a530a992325b821fc9cd1c5b9a41db0b25a9bccf9af929959c316","slot":451802548},{"block":null,"method":"getAccountInfo","params":["B7QResixJo31JzujU1WWHpijYPmSJ2t5o3PEtYrrGHXT",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451802550},"value":{"data":["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","base64"],"executable":false,"lamports":7182720,"owner":"LBUZKhRxPF3XUpBCjp4YzTKgLccjZhTSDM9YuVaPwxo","rentEpoch":18446744073709551615,"space":904}},"result_hash":"02d6c6cd639fec42da03a43c9fe4c59800c7d25407d0b9bf261e6d4168c1818f","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["8Y7kAbjX2h1YmCiBxYFobGQQkhGzTgEE8UurQbDoAgHq",{"commitment":"confirmed"}],"result_hash":"145157906f683fa756b54d3b5f77db52db85dbe42499ac2886071e69092fdbcf","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["DerhHHiEmAMs1FqkAprRZLTgjKfay95owGcQYedWeCf2",{"commitment":"confirmed"}],"result_hash":"9d3ca8d1dfbd072b5ac78368f1c6ac693c9ccc78e9b917d981e6543524cdd4d9","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XsvKCaNsxg2GN8jjUmq71qukMJr7Q1c5R2Mk9P8kcS8","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"4c038ff64e4f5a8a993b06ec8c6a3138490f5549d59f0e4d1bcb8b85d78e586e","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"93b3f41122b06a71864d3be627cd2e82471f82abde584df5edd8a8e72c883db7","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451802577},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbTk3mr2H0GwAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"8e57d66d3cd47ad78267b553f56ae1659f8d4096145fbc200f98bc964646ef37","slot":null},{"block":null,"method":"getTokenSupply","params":["XsvKCaNsxg2GN8jjUmq71qukMJr7Q1c5R2Mk9P8kcS8",{"commitment":"confirmed"}],"result_hash":"8a1dca18944e2d08bed6357c6f7f8554856250e83b292f435b2f86b2f11c9af2","slot":null},{"block":null,"method":"getAccountInfo","params":["XsvKCaNsxg2GN8jjUmq71qukMJr7Q1c5R2Mk9P8kcS8",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451802596},"value":{"data":["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","base64"],"executable":false,"lamports":5637600,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":682}},"result_hash":"1088f375ab27174466807d711a6f3fdffd7d8d0cc06968efb6cd472bfbe95332","slot":null}],"registry_entry":{"chain":"Solana","contract":"XsvKCaNsxg2GN8jjUmq71qukMJr7Q1c5R2Mk9P8kcS8","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T23:37:23Z","name":"Comcast","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"CMCSA"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451802548,"subject":"B7QResixJo31JzujU1WWHpijYPmSJ2t5o3PEtYrrGHXT","ticker":"CMCSA","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"CMCSA"}},"version":1}

Signature

NRUZTiKLDk9Zhbo+t6ab1AJ5jogW0k+OzbUnhQetDfcgud52alSktM0CPTMF/c6t9PPbJfVAHxV2/pboI20jAw==

API call

GET /api/attest/4c41f1c809d4b240cc3ddd7ae207b6a55938e0aa49fe304503103d2985bb3203

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.