Vx/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":"2026-09-29T20:29:28Z","dev":false,"expires_at":"2026-09-30T20:29:28Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsqgsbXwWogGJsNcVZ3TyVouy2MbTkfCFhCGGGcQZ2p","balance":"130699968","decimals":8,"symbol":"Vx"},"chain":"Solana","dex":"raydium-clmm","pool":"7ViDiiS2jjhLvorRgxtSmY434LBgrPVzXrud1zidyYwo","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"301324088","decimals":6,"symbol":null}},"quote_share_of_supply":0.000028418360186616476,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"df170b91b3d8aa79ded20dff856eb7eb5fef16aead9eff43d4bf9a43698abd3a","slot":451749426},{"block":null,"method":"getAccountInfo","params":["7ViDiiS2jjhLvorRgxtSmY434LBgrPVzXrud1zidyYwo",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451749427},"value":{"data":["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","base64"],"executable":false,"lamports":11639144,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"7174bca460a9e27d4b02c1f7af52aef1e9697c6e229343ee9b01bdb36dc7fca7","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["6UBNtaJGEsDV7X8WqBmEPzySjG94GqeLQvKujcLGwmTM",{"commitment":"confirmed"}],"result_hash":"7bd36653dac7aa9711afe09f7486ffb400f9b41440998adfa032aaf66d564a49","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["HS6afMUwjhcuY9Dy3Bdgbq7TtBmgigZnBaSap9MJ7bNd",{"commitment":"confirmed"}],"result_hash":"494a144ba5dd25426c3373d9ce5f3912aca8c80829e3570d051e3fdef477c639","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XsqgsbXwWogGJsNcVZ3TyVouy2MbTkfCFhCGGGcQZ2p","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"504572648dd7694b97122131d106ab84d14b7b017993ec43970bc3f6a1214e85","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"1b1d6d55090eb1da3804c3340fadcce4fdc985c2627dc962e094d84c62122dec","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451749434},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbPrOhK340HAAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"1b7a235f9c14d6bf3c4ef650c7221c081e894de9a0910cb5adcff47db2fb610c","slot":null},{"block":null,"method":"getTokenSupply","params":["XsqgsbXwWogGJsNcVZ3TyVouy2MbTkfCFhCGGGcQZ2p",{"commitment":"confirmed"}],"result_hash":"551060b5e3e67c1211a4642d4a00018fa9b4e3c01e200e31b3ec85184560cbed","slot":null},{"block":null,"method":"getAccountInfo","params":["XsqgsbXwWogGJsNcVZ3TyVouy2MbTkfCFhCGGGcQZ2p",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451749454},"value":{"data":["AQAAAGVqQkIv6okUBqQZ0dHeCPQqhHlBtaGulevOYZrDFyk0QsgA0i4EAAAIAQEAAAD/3+wbzSzTg5PITaoIyRzA041nf/jQq3tdAz8A9zLMMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAARIAQABD+fHuLje4B+pFy3TmAJcivsAJKWAm5ORVi0NeJKXpxgfo6JqaEJfYP/TUnttSKCVz9EegWrHCIFNUO0JuXZJRDAAgAEP58e4uN7gH6kXLdOYAlyK+wAkpYCbk5FWLQ14kpenGBgABAAEZADgABm9ZIlHMR3R4JaWa0UIupDVz9SjaXe4q94ErMU+ZReOzSECL+RXwPwhtemoAAAAANra76lEb8D8aACEA/9/sG80s04OTyE2qCMkcwNONZ3/40Kt7XQM/APcyzDAABABBAEP58e4uN7gH6kXLdOYAlyK+wAkpYCbk5FWLQ14kpenGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADgBAAEP58e4uN7gH6kXLdOYAlyK+wAkpYCbk5FWLQ14kpenGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAATAJ4AQ/nx7i43uAfqRct05gCXIr7ACSlgJuTkVYtDXiSl6cYH6OiamhCX2D/01J7bUiglc/RHoFqxwiBTVDtCbl2SUQsAAABWaXNhIHhTdG9jawIAAABWeEEAAABodHRwczovL3hzdG9ja3MtbWV0YWRhdGEuYmFja2VkLmZpL3Rva2Vucy9Tb2xhbmEvVngvbWV0YWRhdGEuanNvbgAAAAA=","base64"],"executable":false,"lamports":5561040,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":671}},"result_hash":"5bde2cd3e3e24d36fb8bd01075ef2abe7dfecccc332ff712f2a53798f64f3928","slot":null}],"registry_entry":{"chain":"Solana","contract":"XsqgsbXwWogGJsNcVZ3TyVouy2MbTkfCFhCGGGcQZ2p","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T19:37:23Z","name":"Visa","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"V"},"registry_hash":"cdd8e553f76030ef81a98dc88f92ca201914c9d994546f671a41d385871787a4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451749426,"subject":"7ViDiiS2jjhLvorRgxtSmY434LBgrPVzXrud1zidyYwo","ticker":"V","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"V"}},"version":1}

Signature

I9WBwWN9ZIjf9CDDEniGL9C4D4wbAG4u2t3XOgg9O74IkN6F+onny2K+bCI/rXGq1hYzgXfNQoFc1AIlbSnlBA==

API call

GET /api/attest/92c07bd5d57ce67daf161cb62a1f2a1b9ccd4457e45f202f487e59c2e9d3c8a2

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.