NVOx/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":"2026-09-30T20:26:32Z","dev":false,"expires_at":"2026-10-01T20:26:32Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsfAzPzYrYjd4Dpa9BU3cusBsvWfVB9gBcyGC87S57n","balance":"7488854722","decimals":8,"symbol":"NVOx"},"chain":"Solana","dex":"orca-whirlpool","pool":"4UitVa7GtLPVJ7TFMvou3uUQvJJ123U2PDsJ8th2nb4g","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"1559251256","decimals":6,"symbol":null}},"quote_share_of_supply":0.00023687621464775268,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"1e6c11d2a5485a87f0b176c26cabfd1a9924790ae0694f60cdce191d4aab54fe","slot":452071607},{"block":null,"method":"getAccountInfo","params":["4UitVa7GtLPVJ7TFMvou3uUQvJJ123U2PDsJ8th2nb4g",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452071608},"value":{"data":["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","base64"],"executable":false,"lamports":5435760,"owner":"whirLbMiicVdio4qvUfM5KAg6Ct8VwpYzGff3uctyCc","rentEpoch":18446744073709551615,"space":653}},"result_hash":"54b5ce6d11eb81dea4b60823af771610a593907b65f2584f732dfe19623dc884","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["FLgiyTwAxJzJJv6V8kxkKWj5GYLHneuXCc1zxyCMTDMD",{"commitment":"confirmed"}],"result_hash":"5196c18125355ecbd3d4ea03ad00af1c9aa85a12f080ec802b6f93a350d640b3","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["G1EaWEXC7bSRi7udiMM4Ahek6tSVLnVxeb54ZwG69LEZ",{"commitment":"confirmed"}],"result_hash":"ef1bffc88f1838bfbbf77d99bc1fdccee1c681d78d4eb030f695e082e9332f6b","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XsfAzPzYrYjd4Dpa9BU3cusBsvWfVB9gBcyGC87S57n","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"3b538c75c7e8e203b56ba7d512e857fb574b1e0e3d1c542cb533a75c61cbbd52","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"8625c1b88ee0be1b253e47a2af6f9eb82326d371ae0d0c1ba26a3a0ac37c2a66","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452071615},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbE7pYEyhSGwAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"86a9f64599ed15726769642d38a0dd4a2f86e4e476ace118ddde1a37d62823ee","slot":null},{"block":null,"method":"getTokenSupply","params":["XsfAzPzYrYjd4Dpa9BU3cusBsvWfVB9gBcyGC87S57n",{"commitment":"confirmed"}],"result_hash":"eef33f4e3f96ca474fad6319f9c869752181fa62e021e741b4e8ce2fcc54970e","slot":null},{"block":null,"method":"getAccountInfo","params":["XsfAzPzYrYjd4Dpa9BU3cusBsvWfVB9gBcyGC87S57n",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":452071634},"value":{"data":["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","base64"],"executable":false,"lamports":5644560,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":683}},"result_hash":"7a2fe62bc8ee650531c8f5e9e4a6dbc4bf4ef776a81a6d426c30a7a9675dcfd1","slot":null}],"registry_entry":{"chain":"Solana","contract":"XsfAzPzYrYjd4Dpa9BU3cusBsvWfVB9gBcyGC87S57n","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-30T20:20:14Z","name":"Novo Nordisk","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"NVO"},"registry_hash":"a99ed049a73be4334c4eedf803c1905dec813813d0057448e3e14e6a76807dda","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":452071607,"subject":"4UitVa7GtLPVJ7TFMvou3uUQvJJ123U2PDsJ8th2nb4g","ticker":"NVO","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"NVO"}},"version":1}

Signature

nSHDStFFnfDhCBo2xNac0cdmOi096czrE/iWZpUsThVxSH/tdbjpSe9QQM5lGGBaNL4/1O7cBeg7NZIFJ25XAw==

API call

GET /api/attest/fcdd642f2b063f3ac22b3fed1f3042a4f431615c33a4b424b9d7f8189cece77c

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.