METAx/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":"2026-09-30T00:12:25Z","dev":false,"expires_at":"2026-10-01T00:12:25Z","issuer":"Backed xStocks","pool":{"base":{"address":"Xsa62P5mvPszXL1krVUnU5ar38bBSVcWAB6fmPCo5Zu","balance":"51779304290","decimals":8,"symbol":"METAx"},"chain":"Solana","dex":"raydium-clmm","pool":"3L7KbPVaAQA4UTecaGQYsm6UCq5F3sZM9zAYkxqYt63j","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"621867810210","decimals":6,"symbol":null}},"quote_share_of_supply":0.0071541022833743655,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"38bf3ff6443cc10a525b7cd381310afe133f4e4d5cc6d4d9030d3dd627096081","slot":451799272},{"block":null,"method":"getAccountInfo","params":["3L7KbPVaAQA4UTecaGQYsm6UCq5F3sZM9zAYkxqYt63j",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451799274},"value":{"data":["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","base64"],"executable":false,"lamports":11660179,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"fc71498007267636a5d6d8bccb7942bc7cfac6b3c05115a248181f166ae3d146","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["EbqkNhtHX6oNRzWuArFut7C5WXfiU2fEVEmg8rmHKsmc",{"commitment":"confirmed"}],"result_hash":"ba053f2af021ef32d00255e0ff42f406fe9d54248aa18a2b7902a38dcaeb8e39","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["BMS7RrFtXNByMZoAAyViq4LhhUDDZBLfyY3Ni1W9iptc",{"commitment":"confirmed"}],"result_hash":"0158ef444828850b4ea907ce1492e0af6027a91a6ec4551c38e56649c029d2f9","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["Xsa62P5mvPszXL1krVUnU5ar38bBSVcWAB6fmPCo5Zu","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"5f8c9bca2dbf39df75220632c62a8e21cedf12f1dcc505731a686e2fdf621438","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"c7a51046b2d4451dea65300de211de15cea132aa59618ef98daece0cbe4ed874","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451799278},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbhMQrxpQpHAAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"a16b15c5c58d9b7300479f8499c76759b451d09a6be2ffbc8a2fc61021f80a96","slot":null},{"block":null,"method":"getTokenSupply","params":["Xsa62P5mvPszXL1krVUnU5ar38bBSVcWAB6fmPCo5Zu",{"commitment":"confirmed"}],"result_hash":"b05f06fdb01bc49a86f336caf27362a49004cf5567626daf3bae9247b3b35e2b","slot":null},{"block":null,"method":"getAccountInfo","params":["Xsa62P5mvPszXL1krVUnU5ar38bBSVcWAB6fmPCo5Zu",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451799298},"value":{"data":["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","base64"],"executable":false,"lamports":10586439,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":677}},"result_hash":"186b1917c7d8df8d0bbbf0a3a1c6d175cd36e2222fa8ed6c9a13240bffc05b37","slot":null}],"registry_entry":{"chain":"Solana","contract":"Xsa62P5mvPszXL1krVUnU5ar38bBSVcWAB6fmPCo5Zu","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T23:37:23Z","name":"Meta","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"META"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451799272,"subject":"3L7KbPVaAQA4UTecaGQYsm6UCq5F3sZM9zAYkxqYt63j","ticker":"META","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"META"}},"version":1}

Signature

yxSFDYjtnUxGjYm8J8xOyGKbtAAV+ch9aBWT6YgpBE7LkmGjKcYMyZ7Gb1eTb7ieI0CwMF9vkC6JHFTHVjbCAg==

API call

GET /api/attest/3c46b58bffc9b20e26595a0d8899e62e53279eb5fda28323afecb0ac47643c21

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.