AMBRx/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":"2026-09-30T20:29:59Z","dev":false,"expires_at":"2026-10-01T20:29:59Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsaQTCgebC2KPbf27KUhdv5JFvHhQ4GDAPURwrEhAzb","balance":"1194331407855","decimals":8,"symbol":"AMBRx"},"chain":"Solana","dex":"raydium-clmm","pool":"2DHt38DfCB4tSzbKrfgUBsiwUQMBc1oGAwWQWfRJCPut","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"232901370","decimals":6,"symbol":null}},"quote_share_of_supply":0.0013168909828304492,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"4391e7f433df9db7956aae1bc57d6159dc1400c4c231241423b4e577dce69b2d","slot":452072374},{"block":null,"method":"getAccountInfo","params":["2DHt38DfCB4tSzbKrfgUBsiwUQMBc1oGAwWQWfRJCPut",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452072375},"value":{"data":["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","base64"],"executable":false,"lamports":11637199,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"f84eb8f69440c9c8d7f0812f9bef0933e57f2c3ce3c9c0f0799b7dcf2b32a347","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["9Kg5odycPuqjnqA52PxXQDcrdjbzfRk2r3Me7U6UKKgp",{"commitment":"confirmed"}],"result_hash":"45a2d62a4ccc005a2fa6f934c386939507d65cdeb6d8d3c75560a96bb75a9bf2","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["DcrSTNBtVhiYRgyC1dWpzFEiiCvn1Ve5MNPgrnTZyXJs",{"commitment":"confirmed"}],"result_hash":"98133191fbca33b0c8ca6aa8ba13e6979067048fc3cb74c8596718a7bbc187c4","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XsaQTCgebC2KPbf27KUhdv5JFvHhQ4GDAPURwrEhAzb","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"01baf3c000418db5e76d80b93076cf7eada931e896bd6fdbe92bd962eb85647b","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"f1ad324b5bfca8465685f17da62a12ce77e0779da17dcd2a36bb0ec4b7c6b5c9","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452072381},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbDgx/BihSGwAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"9843753c72fec094b0bdfb4bf01a7a4e76107f43cdfa250917581d5bf52d316c","slot":null},{"block":null,"method":"getTokenSupply","params":["XsaQTCgebC2KPbf27KUhdv5JFvHhQ4GDAPURwrEhAzb",{"commitment":"confirmed"}],"result_hash":"c6b94d6565bae42ff45a339e78161a4126e8ef86ca48a60f1444808dc2f91815","slot":null},{"block":null,"method":"getAccountInfo","params":["XsaQTCgebC2KPbf27KUhdv5JFvHhQ4GDAPURwrEhAzb",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452072405},"value":{"data":["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","base64"],"executable":false,"lamports":5609760,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":678}},"result_hash":"97b5cf534a0671cf55ab936e38fe9e5ede7faea3895b96f5fc5996722292b2fc","slot":null}],"registry_entry":{"chain":"Solana","contract":"XsaQTCgebC2KPbf27KUhdv5JFvHhQ4GDAPURwrEhAzb","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-30T20:20:14Z","name":"Amber","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"AMBR"},"registry_hash":"a99ed049a73be4334c4eedf803c1905dec813813d0057448e3e14e6a76807dda","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":452072374,"subject":"2DHt38DfCB4tSzbKrfgUBsiwUQMBc1oGAwWQWfRJCPut","ticker":"AMBR","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"AMBR"}},"version":1}

Signature

a7YSMvSZNxPdmNXTIJfyDqlC04i/lAoJz1Ts9+EFoIUomnP0Ww0q5kxI20+JXSUMh4E0yb+TdbHFLP+c9h72BA==

API call

GET /api/attest/67aaea3099bb75ab6b7ecef58707c2f00f60811bb86d470b5797c72dbf80edaf

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.