MUx/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":"2026-09-29T21:50:58Z","dev":false,"expires_at":"2026-09-30T21:50:58Z","issuer":"Backed xStocks","pool":{"base":{"address":"XsQLZycSZ7QnBBdBXQaTbQdiUcbRqjNJgyBGAMzhHav","balance":"4886102","decimals":8,"symbol":"MUx"},"chain":"Solana","dex":"orca-whirlpool","pool":"42TQjQmt2NjRFiUmEshJJ3KngFpQzTJV2K898JqR2pBD","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"115291701","decimals":6,"symbol":null}},"quote_share_of_supply":1.157900553821121e-6,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"fad3ded4ce25873e1b5623b8105735749f94cecc44ada58022618deff32db2b3","slot":451767626},{"block":null,"method":"getAccountInfo","params":["42TQjQmt2NjRFiUmEshJJ3KngFpQzTJV2K898JqR2pBD",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451767627},"value":{"data":["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","base64"],"executable":false,"lamports":5435760,"owner":"whirLbMiicVdio4qvUfM5KAg6Ct8VwpYzGff3uctyCc","rentEpoch":18446744073709551615,"space":653}},"result_hash":"366b66e5981fe96afc67414188ae431e9776cd45cbe5fa1ceb1f428a17feae38","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["9CBFM1voZQFmr3namF7qXcCjMvnzYLksTr8c9mfCJYms",{"commitment":"confirmed"}],"result_hash":"81b005041a0005a10903a0796542b6432719c08847938100e88f2510b9c97064","slot":null},{"block":null,"method":"getTokenAccountBalance","params":["8Txu2RaytyCqSP5EiyFoGWScezLS7KLkAJDQHrWfnQTz",{"commitment":"confirmed"}],"result_hash":"c56d8aef0f9391216db836d29ae48b641393c73621c6f226088b880e635d1514","slot":null},{"block":null,"method":"getMultipleAccounts","params":[["XsQLZycSZ7QnBBdBXQaTbQdiUcbRqjNJgyBGAMzhHav","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"06611b9c223eef901e74360c5a8a705b63237ba3a1ec92321b5f379cd01e7873","slot":null},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"eea0743d25d71952487f940f52717e7596b786fddf05773f74e697a1eb65d82d","slot":null},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451767651},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmbkgA8GjgrHAAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":534808027998,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"6a5ded407bf91f79203b4462e33b5e064476c187fe9a1a4df0c1142960c2a10b","slot":null},{"block":null,"method":"getTokenSupply","params":["XsQLZycSZ7QnBBdBXQaTbQdiUcbRqjNJgyBGAMzhHav",{"commitment":"confirmed"}],"result_hash":"b86d3d30d2a6cf72aafb2b61c9336b60a978123d680c52ef068d1b20a336f7e4","slot":null},{"block":null,"method":"getAccountInfo","params":["XsQLZycSZ7QnBBdBXQaTbQdiUcbRqjNJgyBGAMzhHav",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.0","slot":451767671},"value":{"data":["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","base64"],"executable":false,"lamports":5665440,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":686}},"result_hash":"87974b1e6f467526003f3bea5c7d054aad0a1a1786fc6aff63bfddc55157097b","slot":null}],"registry_entry":{"chain":"Solana","contract":"XsQLZycSZ7QnBBdBXQaTbQdiUcbRqjNJgyBGAMzhHav","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T21:37:23Z","name":"Micron Technology","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"MU"},"registry_hash":"150e36ec2d8671dfd5162968dde13805ee255a1c51371de5cab1659725f1b017","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":451767626,"subject":"42TQjQmt2NjRFiUmEshJJ3KngFpQzTJV2K898JqR2pBD","ticker":"MU","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"MU"}},"version":1}

Signature

bUO7ez4P2zm4BKPGOl/WmNiJxDvmm0n/3hXRXYNPgmqiTHjPcP52ccK4HHX+UXOKsKmf2GKPTx9uJnQCqFyvBw==

API call

GET /api/attest/fdd22b5684ee968fddb16cd7568da9be71cd9cf2a59e4b16c1753ea61479623d

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.