QED
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QED certificate

QED record e312eccdeb88 from . View the live pool page.

Verified · Backed xStocks WELL

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

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

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
WELLx / USDC · Ethereum
Pool address
0xd639cd156e8cf41f1d1e3a8e8b3eae4010a823f8a922e3771dbe6347b7aecdb7
Issuer match
Backed xStocks · WELL · View WELL contracts
Checked
Valid until
Serial
e312eccdeb88
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":26257255,"chain":"ethereum","checked_at":"2026-10-23T18:55:48Z","dev":false,"expires_at":"2026-10-24T18:55:48Z","issuer":"Backed xStocks","pool":{"base":{"address":"0x03aA4399Fd8764e9f1A225dBa90bbFDf5102b630","balance":"79775202848057958","decimals":18,"symbol":"WELLx"},"chain":"ethereum","dex":"uniswap-v4","pool":"0xd639cd156e8cf41f1d1e3a8e8b3eae4010a823f8a922e3771dbe6347b7aecdb7","quote":{"address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","balance":"19256236","decimals":6,"symbol":"USDC"}},"quote_share_of_supply":2.8598577692799456e-6,"reads":[{"block":null,"method":"eth_call","params":["0xbd216513d74c8cf14cf4747e6aaa6420ff64ee9e","poolKeys","0xd639cd156e8cf41f1d1e3a8e8b3eae4010a823f8a922e3771d"],"raw_result":"Object {\"currency0\": String(\"0x03aa4399fd8764e9f1a225dba90bbfdf5102b630\"), \"currency1\": String(\"0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48\"), \"fee\": String(\"910000\"), \"hooks\": String(\"0x0000000000000000000000000000000000000000\"), \"tickSpacing\": String(\"18200\")}","result_hash":"62bf7787c91778454a71f192115ad7c3fd48b870d67ea7caa469ab2c02f34893","slot":null},{"block":null,"method":"eth_call","params":["0x7ffe42c4a5deea5b0fec41c94c136cf115597227","getSlot0","0xd639cd156e8cf41f1d1e3a8e8b3eae4010a823f8a922e3771dbe6347b7aecdb7"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x7ffe42c4a5deea5b0fec41c94c136cf115597227","getLiquidity","0xd639cd156e8cf41f1d1e3a8e8b3eae4010a823f8a922e3771dbe6347b7aecdb7"],"raw_result":"1239423338801","result_hash":"50de336085a89d23d06a37db89cba5d855989c2cd8a8a83ec24e1b5bc1915917","slot":null},{"block":null,"method":"eth_call","params":["0x03aA4399Fd8764e9f1A225dBa90bbFDf5102b630","symbol()"],"raw_result":"Some(\"WELLx\")","result_hash":"487e31d62aec739b83167b640c36d4432fa992f22083e1beec1dd2925b4ef538","slot":null},{"block":null,"method":"eth_call","params":["0x03aA4399Fd8764e9f1A225dBa90bbFDf5102b630","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":26257255,"method":"eth_blockNumber","params":[],"result_hash":"af8412d6c2ee1fb60abb052088559f8615668af495c24b57f8523624221b2d45","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(\"47988978773018088\")","result_hash":"21040d8b303df9e6e8a2f9615ca46be79cb555c22a2e8533b86740668182baca","slot":null},{"block":null,"method":"eth_call","params":["0x03aA4399Fd8764e9f1A225dBa90bbFDf5102b630","symbol()"],"raw_result":"Some(\"WELLx\")","result_hash":"487e31d62aec739b83167b640c36d4432fa992f22083e1beec1dd2925b4ef538","slot":null},{"block":null,"method":"eth_call","params":["0x03aA4399Fd8764e9f1A225dBa90bbFDf5102b630","name()"],"raw_result":"Some(\"Welltower xStock\")","result_hash":"fa3ae3da8ab00f0760bd1ccf6993f93167e46cf17f6d7cbace2badec1a9a8c39","slot":null},{"block":null,"method":"eth_call","params":["0x03aA4399Fd8764e9f1A225dBa90bbFDf5102b630","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x03aA4399Fd8764e9f1A225dBa90bbFDf5102b630","totalSupply()"],"raw_result":"Some(\"27894814806871928035196\")","result_hash":"ba3bd0baca6a8c3321878b61ae89804cbe18be2a07a560aa9ff34f98efba22a1","slot":null},{"block":null,"method":"eth_getCode","params":["0x03aA4399Fd8764e9f1A225dBa90bbFDf5102b630","latest"],"result_hash":"71ee049d0c0cab5d785d7aef2e6b591e511475fb8ef465f4d8f5335bfd412bfd","slot":null},{"block":null,"method":"eth_getCode","params":["0x03aA4399Fd8764e9f1A225dBa90bbFDf5102b630","latest"],"result_hash":"71ee049d0c0cab5d785d7aef2e6b591e511475fb8ef465f4d8f5335bfd412bfd","slot":null}],"registry_entry":{"chain":"ethereum","contract":"0x03aA4399Fd8764e9f1A225dBa90bbFDf5102b630","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-10-23T18:11:43Z","name":"Welltower","official_deployments":[{"address":"0x03aa4399fd8764e9f1a225dba90bbfdf5102b630","network":"Ethereum","wrapper_address_v2":"0x767417c8324e9f8aeb66815ab39029f64e965e63"},{"address":"0x03aa4399fd8764e9f1a225dba90bbfdf5102b630","network":"BinanceSmartChain","wrapper_address_v2":"0x767417c8324e9f8aeb66815ab39029f64e965e63"},{"address":"0x03aa4399fd8764e9f1a225dba90bbfdf5102b630","network":"Arbitrum","wrapper_address_v2":"0x767417c8324e9f8aeb66815ab39029f64e965e63"},{"address":"XsuKHFvcZLWvhk8XcprK4tiAZRefQ4nfTyNs6b9BArz","network":"Solana"},{"address":"EQC9DAizREtg3l1Ykz9v2eElgSQDafmGYzFWf3qNv17waJSv","network":"Ton"},{"address":"0x03aa4399fd8764e9f1a225dba90bbfdf5102b630","network":"Mantle","wrapper_address_v2":"0x767417c8324e9f8aeb66815ab39029f64e965e63"},{"address":"0x03aa4399fd8764e9f1a225dba90bbfdf5102b630","network":"HyperEVM"},{"address":"0x03aa4399fd8764e9f1a225dba90bbfdf5102b630","network":"Ink","wrapper_address_v2":"0x767417c8324e9f8aeb66815ab39029f64e965e63"},{"address":"0x03aa4399fd8764e9f1a225dba90bbfdf5102b630","network":"XLayer","wrapper_address_v2":"0x767417c8324e9f8aeb66815ab39029f64e965e63"},{"address":"0x03aa4399fd8764e9f1a225dba90bbfdf5102b630","network":"Optimism","wrapper_address_v2":"0x767417c8324e9f8aeb66815ab39029f64e965e63"},{"address":"0x03aa4399fd8764e9f1a225dba90bbfdf5102b630","network":"Monad","wrapper_address_v2":"0x767417c8324e9f8aeb66815ab39029f64e965e63"}],"source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"WELL"},"registry_hash":"d3aaa1183f4120326f803d9fb1ab46c445a10027d23def1a059f9fee0befc5c8","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xd639cd156e8cf41f1d1e3a8e8b3eae4010a823f8a922e3771dbe6347b7aecdb7","ticker":"WELL","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"WELL"}},"version":1}
Signature
wOlDsJWSQaFwgvi9xjnmIZ2ypXzb44xoRlMP8e++S3OAJKLnR9gfqRKddf55XaJcMVQYKbw+ZVJCq+xJ56xABQ==
API call
GET /api/attest/e312eccdeb886a296683b4264824f6851903a0c787e2a3af76a0470773f1aa7f
  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.