Does TMOx / Unknown match its issuer's published contract?

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":"2026-10-24T22:29:41Z","dev":false,"expires_at":"2026-10-25T22:29:41Z","issuer":"Backed xStocks","pool":{"base":{"address":"Xs8drBWy3Sd5QY3aifG9kt9KFs2K3PGZmx7jWrsrk57","balance":"4544060","decimals":8,"symbol":"TMOx"},"chain":"solana","dex":"raydium-clmm","pool":"7eT7W5fek6gu2EizyQpjHHgr12Hg8NcutE7zR4Up6wF1","quote":{"address":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","balance":"59497625","decimals":6,"symbol":null}},"quote_share_of_supply":1.5027160111024025e-6,"reads":[{"block":null,"method":"getSlot","params":[{"commitment":"confirmed"}],"result_hash":"269ee845630ea5d1548f42e3166ddf304439922738b23b6c7a025ccf7b15a667","slot":461020354},{"block":null,"method":"getAccountInfo","params":["7eT7W5fek6gu2EizyQpjHHgr12Hg8NcutE7zR4Up6wF1",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.2","slot":461020356},"value":{"data":["9+3j9dfD3kb8hcSznTxVnguaIJxiZkAnurDmn3MWR0PC2GLghp2KJqFQIcNk9tpSiQC8oDT2wX2Z/cwlAgCsYJuMnO0vKy+YZwfoG7muJkFpBd88STix4027cSptztgnGPytQLwFdNKixvp6877brTo9ZfNqq8l0MbG75MLS9uDkfKYCA0UvXWEbX4LJLmsV8EOLpkmNznVWdt+hdbEC65d2ISgm16xwn3/Lqzq7qtbPbvnHWXX+RNFj2s9ei2F35DyyYn8iWgpCkz8wLuDoUzQL+h0VDSVHxx2u6uDQvWe4Frf0zlJ7olcIBngAtmw/BgAAAAAAAAAAAAAAACaP7uDNNK6KAgAAAAAAAADhSAAAAAAAADHGvLVK+10BAAAAAAAAAADN2GTgC2g8CAAAAAAAAAAAlZEBAAAAAABa+RwAAAAAAKFMmQQAAAAAAAAAAAAAAACFRP8XAAAAAAAAAAAAAAAAQ04jWAAAAAAAAAAAAAAAALNQ+RAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABQIcNk9tpSiQC8oDT2wX2Z/cwlAgCsYJuMnO0vKy+YZwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAUCHDZPbaUokAvKA09sF9mf3MJQIArGCbjJztLysvmGcAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFAhw2T22lKJALygNPbBfZn9zCUCAKxgm4yc7S8rL5hnAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0+MJAAAAAAC0owcAAAAAAEuIvQAAAAAAWeWyAAAAAADRhQAAAAAAAGOoCQAAAAAAAAAAAAAAAAArBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=","base64"],"executable":false,"lamports":11637120,"owner":"CAMMCzo5YL8w4VFF8KVHrK22GGUsp5VTaW7grrKgrWqK","rentEpoch":18446744073709551615,"space":1544}},"result_hash":"941315b8f1c9dd4cda0cf9d532e79ed9e0354c4f43e9915f3118e450ddda4464","slot":461020356},{"block":null,"method":"getTokenAccountBalance","params":["9bruQ1gUfKUHeStQ63wrXRgXoQMRcrhBvu4eFEZHXRku",{"commitment":"confirmed"}],"result_hash":"a0e2ee72dbb3809418384742e3114ec3ac8abf86737b7983bbea704fc59a66fa","slot":461020357},{"block":null,"method":"getTokenAccountBalance","params":["2qrUjVRDzqMCtcbwwzfKoQKzqeyBRcQCB7ACZ1iZvZvv",{"commitment":"confirmed"}],"result_hash":"2221f6f0e95031b4bc9f2bccf8644d46bbc087fa54efb4e14d746ea2748592fe","slot":461020359},{"block":null,"method":"getMultipleAccounts","params":[["Xs8drBWy3Sd5QY3aifG9kt9KFs2K3PGZmx7jWrsrk57","EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v"],{"commitment":"confirmed","encoding":"base64"}],"result_hash":"9947de234170a1344ed5d6906a97def2844e0d590380d6b2e8206aa56fd2b37a","slot":461020360},{"block":null,"method":"getTokenSupply","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed"}],"result_hash":"3f7190a48e51082dfe9ebdf97bf3e1a24c7355a1661bc08f42802124f5352000","slot":461020360},{"block":null,"method":"getAccountInfo","params":["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.2","slot":461020362},"value":{"data":["AQAAAJj+huiNm+Lqi8HMpIeLKYjCQPUrhCS/tA7Rot3LXhmb7c2+1eRfGwAGAQEAAABicKqKWcWUBbRShshncubNEm6bil06OFNtN/e0FOi2Zw==","base64"],"executable":false,"lamports":556697118914,"owner":"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA","rentEpoch":18446744073709551615,"space":82}},"result_hash":"6f63cbe4a146d0f36f54ef88a8c894a1e44ce78a23705428f27d310aa7e44fdc","slot":461020362},{"block":null,"method":"getProgramAccounts","params":["metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s",{"commitment":"confirmed","encoding":"base64","filters":[{"memcmp":{"bytes":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","offset":33}}]}],"result_hash":"85ed2b681fcd867f23813dfe31c8a2490c6fd4cdc10d37000244f0ba61f13af0","slot":null},{"block":null,"method":"getTokenSupply","params":["Xs8drBWy3Sd5QY3aifG9kt9KFs2K3PGZmx7jWrsrk57",{"commitment":"confirmed"}],"result_hash":"25182575bca7d6bfd3fb957e3b70a54cb6f44c83ace68e5f85e7c1ede441ca58","slot":461020363},{"block":null,"method":"getAccountInfo","params":["Xs8drBWy3Sd5QY3aifG9kt9KFs2K3PGZmx7jWrsrk57",{"commitment":"confirmed","encoding":"base64"}],"raw_result":{"context":{"apiVersion":"4.3.2","slot":461020364},"value":{"data":["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","base64"],"executable":false,"lamports":5651520,"owner":"TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb","rentEpoch":18446744073709551615,"space":684}},"result_hash":"83b6ba13c03f865c66d2480095c182906e4f519bc23b4e033374be81aac75a3f","slot":461020364},{"block":null,"method":"getProgramAccounts","params":["metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s",{"commitment":"confirmed","encoding":"base64","filters":[{"memcmp":{"bytes":"Xs8drBWy3Sd5QY3aifG9kt9KFs2K3PGZmx7jWrsrk57","offset":33}}]}],"result_hash":"4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945","slot":null}],"registry_entry":{"chain":"solana","contract":"Xs8drBWy3Sd5QY3aifG9kt9KFs2K3PGZmx7jWrsrk57","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-10-24T22:15:09Z","name":"Thermo Fisher","official_deployments":[{"address":"0xaf072f109a2c173d822a4fe9af311a1b18f83d19","network":"Arbitrum","wrapper_address":"0x89ea0284308deef33a22abd7ea33888b4349108c","wrapper_address_v2":"0x5c730581a6a33c64c26eb06014a5fd163ba71ab4"},{"address":"EQCUhAQRYFgDCs7sVR-ONi92SVL-NpOoH1qX0UiCQ-Dxerqh","network":"Ton"},{"address":"TScLC8RqWY5bZwcLrzAVUaMUK22d1BRciP","network":"Tron"},{"address":"Xs8drBWy3Sd5QY3aifG9kt9KFs2K3PGZmx7jWrsrk57","network":"Solana"},{"address":"0xaf072f109a2c173d822a4fe9af311a1b18f83d19","network":"Ink","wrapper_address_v2":"0x5c730581a6a33c64c26eb06014a5fd163ba71ab4"},{"address":"0xaf072f109a2c173d822a4fe9af311a1b18f83d19","network":"BinanceSmartChain","wrapper_address":"0x89ea0284308deef33a22abd7ea33888b4349108c","wrapper_address_v2":"0x5c730581a6a33c64c26eb06014a5fd163ba71ab4"},{"address":"0xaf072f109a2c173d822a4fe9af311a1b18f83d19","network":"Mantle","wrapper_address":"0x89ea0284308deef33a22abd7ea33888b4349108c","wrapper_address_v2":"0x5c730581a6a33c64c26eb06014a5fd163ba71ab4"},{"address":"0xaf072f109a2c173d822a4fe9af311a1b18f83d19","network":"Monad","wrapper_address_v2":"0x5c730581a6a33c64c26eb06014a5fd163ba71ab4"},{"address":"0xaf072f109a2c173d822a4fe9af311a1b18f83d19","network":"HyperEVM"},{"address":"0xaf072f109a2c173d822a4fe9af311a1b18f83d19","network":"XLayer","wrapper_address_v2":"0x5c730581a6a33c64c26eb06014a5fd163ba71ab4"},{"address":"0xaf072f109a2c173d822a4fe9af311a1b18f83d19","network":"Optimism","wrapper_address_v2":"0x5c730581a6a33c64c26eb06014a5fd163ba71ab4"},{"address":"0xaf072f109a2c173d822a4fe9af311a1b18f83d19","network":"Ethereum","wrapper_address":"0x89ea0284308deef33a22abd7ea33888b4349108c","wrapper_address_v2":"0x5c730581a6a33c64c26eb06014a5fd163ba71ab4"}],"source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"TMO"},"registry_hash":"dc9cab478c06f57ce5f23fe1c8e275b6c640972141585799e24731eaac378fcf","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":461020354,"subject":"7eT7W5fek6gu2EizyQpjHHgr12Hg8NcutE7zR4Up6wF1","ticker":"TMO","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"TMO"}},"version":1}

Signature

PdVyb3gURa5vVjm0i6mWWpsdKIm9N9P9vxS9wIqqCznb6Iax/WXBnv2SR/I7AhJEmngfDWqYmzMJwh3MYZdCAA==

API call

GET /api/attest/611e299c73678cb0022216553840223192ce6d20e21a292824f3254d1ed5c775

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.