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":"2026-09-29T03:02:49Z","dev":false,"expires_at":"2026-09-30T03:02:49Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsaQTCgebC2KPbf27KUhdv5JFvHhQ4GDAPURwrEhAzb","balance":"41452657912","decimals":8,"symbol":"AMBRx"},"chain":"Solana","dex":"raydium-clmm","pool":"GXhdjQHzdtSA2yDEGEd3SCVqiMkoyHowavkVbYwypEw","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"25644452","decimals":6,"symbol":null}},"quote_share_of_supply":0.000045706435466440914,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"85a78a2c2369bc12c68ef4755db74876844b2e1558fc7df6521a9c5e3a84683b","slot":451514690},{"block":null,"method":"getAccountInfo","params":["GXhdjQHzdtSA2yDEGEd3SCVqiMkoyHowavkVbYwypEw",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451514692},"value":{"data":["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","base64"],"executable":false,"lamports":11637125,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"c665a1f78ebe417e11ba4bd472e00101a2fe57e48fbca59be601656cc1225005","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["8rAZTyCfCYmb6RboTVBshRiQcpnTmjfDHbW1KkmV3UsY",{"commitment":"confirmed"}],"result_hash":"593b2efbe8935aef5f45bb4a043d5affc9548e027942698378be6991dd036e61","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["G1LMPf3ZrWpd83K3L3wqRJP1SQgy8BwymgMMuehiQvxo",{"commitment":"confirmed"}],"result_hash":"8576c1b6e72adb36bfdf6e8cc050032fd8d890a10fc814bc251c2a804313ab3c","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XsaQTCgebC2KPbf27KUhdv5JFvHhQ4GDAPURwrEhAzb","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"c7fd969fe357205ebb1b8f4c96896ddf5dd2fff7b5187622a3d5bf145df26498","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"7517c6d1918fdad7193df8f20ec09574ab4c0b2678e249b1f604908667d5f565","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451514720},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbHiR4CE0XHQAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"e21e3f474d2397ea05ed3c37313487a34981104d8dc5463e8dd258720e3b7ac5","slot":null},{"block":null,"method":"getTokenSupply","params":["XsaQTCgebC2KPbf27KUhdv5JFvHhQ4GDAPURwrEhAzb",{"commitment":"confirmed"}],"result_hash":"42a3614199527ffb4f80041e18afa462fe2b78415a18ecd3240e5b0631dd926e","slot":null},{"block":null,"method":"getAccountInfo","params":["XsaQTCgebC2KPbf27KUhdv5JFvHhQ4GDAPURwrEhAzb",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451514740},"value":{"data":["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","base64"],"executable":false,"lamports":5609760,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":678}},"result_hash":"c2cf51a206cd2e78593f592be19d648825482c390e050909d29d89509e5d0f39","slot":null}],"registry_entry":{"chain":"Solana","contract":"XsaQTCgebC2KPbf27KUhdv5JFvHhQ4GDAPURwrEhAzb","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T02:07:50Z","name":"Amber","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"AMBR"},"registry_hash":"d47c3f349c8376c552dcd597b46d8c7e3f43f1fe6e35bcadd0408f53977ae201","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451514690,"subject":"GXhdjQHzdtSA2yDEGEd3SCVqiMkoyHowavkVbYwypEw","ticker":"AMBR","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"AMBR"}},"version":1}

Signature

X3NwAmNTRnLWrL533ja6+MSW6p83CyAfKODqLLQaRCLs7tzVUSnd9V4HyAX8vP7h9nbqRA9j+6DbVDGV+g3SCQ==

API call

GET /api/attest/5f1f9abeb5327120cfa6507f00626500863ed235cc5f463bbc65f6147b2a8434

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.