QED
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QED certificate

QED record daf269dca6e2 from . View the live pool page.

Verified · Backed xStocks TSM

Does TSMx / USDC match its issuer's published contract?

The pool's quote contract matches Backed xStocks's registry entry for TSM.

Verified means the observed quote-token contract matches an issuer-published registry entry on Ethereum. Only the quote-side contract is checked.

This does not prove backing, custody, reserves, price, safety, solvency, or endorsement.

Signature valid · contract match

Ethereum Uniswap v4
Subject
TSMx / USDC · Ethereum
Pool address
0x9a5e1f79a0ac4542923604374587e82f5c0ea8b22bcab2479000f2f5c4ebfcdb
Issuer match
Backed xStocks · TSM · View TSM contracts
Checked
Valid until
Serial
daf269dca6e2
Signed by
QED (key id GJWKkiUd)

After this time the certificate remains a historical record, but it no longer establishes current pool or registry state. Re-check to create a fresh observation before relying on current facts.

Compare this address with the one you were given before you trade.

under 0.01% Checked

Only trust an address you pasted here or opened from this page.

How to verify this yourself

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":26227543,"chain":"ethereum","checked_at":"2026-10-19T15:33:35Z","dev":false,"expires_at":"2026-10-20T15:33:35Z","issuer":"Backed xStocks","pool":{"base":{"address":"0x9e3bf4Ecfc44EeDD624F26656B6736a3F093b073","balance":"234646828618663034","decimals":18,"symbol":"TSMx"},"chain":"ethereum","dex":"uniswap-v4","pool":"0x9a5e1f79a0ac4542923604374587e82f5c0ea8b22bcab2479000f2f5c4ebfcdb","quote":{"address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","balance":"108619899","decimals":6,"symbol":"USDC"}},"quote_share_of_supply":7.0667845964041595e-6,"reads":[{"block":null,"method":"eth_call","params":["0xbd216513d74c8cf14cf4747e6aaa6420ff64ee9e","poolKeys","0x9a5e1f79a0ac4542923604374587e82f5c0ea8b22bcab24790"],"raw_result":"Object {\"currency0\": String(\"0x9e3bf4ecfc44eedd624f26656b6736a3f093b073\"), \"currency1\": String(\"0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48\"), \"fee\": String(\"880000\"), \"hooks\": String(\"0x0000000000000000000000000000000000000000\"), \"tickSpacing\": String(\"17600\")}","result_hash":"cc4a8f4cf16ec1e43d026515a42cc266e7d4295050f81f35aab039fbfdb5538e","slot":null},{"block":null,"method":"eth_call","params":["0x7ffe42c4a5deea5b0fec41c94c136cf115597227","getSlot0","0x9a5e1f79a0ac4542923604374587e82f5c0ea8b22bcab2479000f2f5c4ebfcdb"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x7ffe42c4a5deea5b0fec41c94c136cf115597227","getLiquidity","0x9a5e1f79a0ac4542923604374587e82f5c0ea8b22bcab2479000f2f5c4ebfcdb"],"raw_result":"5048496316714","result_hash":"489c19d91669319a2e1a0ddb9e7eabab2cdb398109a95081b0a45db3b41092bd","slot":null},{"block":null,"method":"eth_call","params":["0x9e3bf4Ecfc44EeDD624F26656B6736a3F093b073","symbol()"],"raw_result":"Some(\"TSMx\")","result_hash":"fd8ee0e1ced59e4c2542b595ccd3a335132fd83aa59db4d15e77a7ce71b11574","slot":null},{"block":null,"method":"eth_call","params":["0x9e3bf4Ecfc44EeDD624F26656B6736a3F093b073","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","symbol()"],"raw_result":"Some(\"USDC\")","result_hash":"a3c9e246b0832b52e41efce041d8614251f5e288cdd4b192e85bfd3dfcb748ff","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","decimals()"],"raw_result":"Some(6)","result_hash":"c68fe6989b1835302197d0af5be845dfab10ed9f9632205eb4ab5b949b9e1a6a","slot":null},{"block":26227543,"method":"eth_blockNumber","params":[],"result_hash":"2a978ff2f0aa8ed43c53ade31a5c2e2af9aa8f3ae69e19b93eff3ab86e4e15bb","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","symbol()"],"raw_result":"Some(\"USDC\")","result_hash":"a3c9e246b0832b52e41efce041d8614251f5e288cdd4b192e85bfd3dfcb748ff","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","name()"],"raw_result":"Some(\"USD Coin\")","result_hash":"fe94af15dc887a2c9df1fb0d6d276e6c586ca9d430ffeac0d05e4baee0637fd1","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","decimals()"],"raw_result":"Some(6)","result_hash":"c68fe6989b1835302197d0af5be845dfab10ed9f9632205eb4ab5b949b9e1a6a","slot":null},{"block":null,"method":"eth_call","params":["0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","totalSupply()"],"raw_result":"Some(\"47997534769101732\")","result_hash":"ff088f0573c7334fd0e69100e148aabb29c993a2fc73917d6216fd863cc200ed","slot":null},{"block":null,"method":"eth_call","params":["0x9e3bf4Ecfc44EeDD624F26656B6736a3F093b073","symbol()"],"raw_result":"Some(\"TSMx\")","result_hash":"fd8ee0e1ced59e4c2542b595ccd3a335132fd83aa59db4d15e77a7ce71b11574","slot":null},{"block":null,"method":"eth_call","params":["0x9e3bf4Ecfc44EeDD624F26656B6736a3F093b073","name()"],"raw_result":"Some(\"TSMC xStock\")","result_hash":"fa5d52b80103e322f7c223dda331c49be0c9f58268f29e86dc2e3f0f9bd83ad2","slot":null},{"block":null,"method":"eth_call","params":["0x9e3bf4Ecfc44EeDD624F26656B6736a3F093b073","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x9e3bf4Ecfc44EeDD624F26656B6736a3F093b073","totalSupply()"],"raw_result":"Some(\"33204185781757095600000\")","result_hash":"8938fa06e4a8a44854b19c27c2467ad69c06900f76f4acebac84ba2ffffcbb1d","slot":null},{"block":null,"method":"eth_getCode","params":["0x9e3bf4Ecfc44EeDD624F26656B6736a3F093b073","latest"],"result_hash":"71ee049d0c0cab5d785d7aef2e6b591e511475fb8ef465f4d8f5335bfd412bfd","slot":null},{"block":null,"method":"eth_getCode","params":["0x9e3bf4Ecfc44EeDD624F26656B6736a3F093b073","latest"],"result_hash":"71ee049d0c0cab5d785d7aef2e6b591e511475fb8ef465f4d8f5335bfd412bfd","slot":null}],"registry_entry":{"chain":"ethereum","contract":"0x9e3bf4Ecfc44EeDD624F26656B6736a3F093b073","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-10-19T14:40:19Z","name":"TSMC","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"TSM"},"registry_hash":"92e84a5097c412088157ecc6f5394b143eea965b7cf43a01187023b0d9844862","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x9a5e1f79a0ac4542923604374587e82f5c0ea8b22bcab2479000f2f5c4ebfcdb","ticker":"TSM","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"TSM"}},"version":1}
Signature
8u3sL7DSuaVVUGAitgzlLPj01D4fGNPvlI7D0B/nIwjxc6G3i3ImABTS9y/pzg3snjS+ihngVS82HaxxIN1/Dg==
API call
GET /api/attest/daf269dca6e25bca2d96691e4b26bf4778dc536defd6dff9e36b2a638b1ea76d
  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.