QED
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QED certificate

QED record 8a7edfc24004 from . View the live pool page.

Verified · Ondo USD

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

The pool's quote contract matches Ondo's registry entry for USD.

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
USDon / USDC · Ethereum
Pool address
0x8af89bb8c84824ae37f5282a8e26b8982dc4f68a30b5541e69a47e7eefb02860
Issuer match
Ondo · USD · View USD contracts
Checked
Valid until
Serial
8a7edfc24004
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.

1.33% 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":26221428,"chain":"ethereum","checked_at":"2026-10-18T19:06:09Z","dev":false,"expires_at":"2026-10-19T19:06:09Z","issuer":"Ondo","pool":{"base":{"address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","balance":"444324439155","decimals":6,"symbol":"USDC"},"chain":"ethereum","dex":"uniswap-v4","pool":"0x8af89bb8c84824ae37f5282a8e26b8982dc4f68a30b5541e69a47e7eefb02860","quote":{"address":"0xAcE8E719899F6E91831B18AE746C9A965c2119F1","balance":"448486169169387108555842","decimals":18,"symbol":"USDon"}},"quote_share_of_supply":0.01325732286861837,"reads":[{"block":null,"method":"eth_call","params":["0xbd216513d74c8cf14cf4747e6aaa6420ff64ee9e","poolKeys","0x8af89bb8c84824ae37f5282a8e26b8982dc4f68a30b5541e69"],"raw_result":"Object {\"currency0\": String(\"0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48\"), \"currency1\": String(\"0xace8e719899f6e91831b18ae746c9a965c2119f1\"), \"fee\": String(\"10000\"), \"hooks\": String(\"0x0000000000000000000000000000000000000000\"), \"tickSpacing\": String(\"100\")}","result_hash":"d7be1c430b32b4d4e3ae03c7a5586c684bcb64464b9dab3482ba45dc20ca5ded","slot":null},{"block":null,"method":"eth_call","params":["0x7ffe42c4a5deea5b0fec41c94c136cf115597227","getSlot0","0x8af89bb8c84824ae37f5282a8e26b8982dc4f68a30b5541e69a47e7eefb02860"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x7ffe42c4a5deea5b0fec41c94c136cf115597227","getLiquidity","0x8af89bb8c84824ae37f5282a8e26b8982dc4f68a30b5541e69a47e7eefb02860"],"raw_result":"446400454284017986","result_hash":"34413f9378b41acbed2ef46109f91ea16cdc1f8f810faf88415deb8f01cd8361","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":null,"method":"eth_call","params":["0xAcE8E719899F6E91831B18AE746C9A965c2119F1","symbol()"],"raw_result":"Some(\"USDon\")","result_hash":"c1f2a7a70dafac2015c6623af748d80fa986e11cf3bc6e2c4a82dbaa3ee65186","slot":null},{"block":null,"method":"eth_call","params":["0xAcE8E719899F6E91831B18AE746C9A965c2119F1","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":26221428,"method":"eth_blockNumber","params":[],"result_hash":"b876d4d4c985e907ec9e5da1be38be36faf8f933780078da22ef9d289c53a2a4","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(\"48216032380830870\")","result_hash":"2af48a797856ac5b0f8cde94dc9443efd630cf112553f809a680838e3b830069","slot":null},{"block":null,"method":"eth_call","params":["0xAcE8E719899F6E91831B18AE746C9A965c2119F1","symbol()"],"raw_result":"Some(\"USDon\")","result_hash":"c1f2a7a70dafac2015c6623af748d80fa986e11cf3bc6e2c4a82dbaa3ee65186","slot":null},{"block":null,"method":"eth_call","params":["0xAcE8E719899F6E91831B18AE746C9A965c2119F1","name()"],"raw_result":"Some(\"Ondo U.S. Dollar Token\")","result_hash":"3c56680ac062cb7877e9841c61b13ca3619b5451f8bc537da51b116e866a9af3","slot":null},{"block":null,"method":"eth_call","params":["0xAcE8E719899F6E91831B18AE746C9A965c2119F1","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xAcE8E719899F6E91831B18AE746C9A965c2119F1","totalSupply()"],"raw_result":"Some(\"33829316341914411747067842\")","result_hash":"a7b1d14ef5ccf627bb1f292ca299d0664513c677f334719f6082ea1f26298327","slot":null},{"block":null,"method":"eth_getCode","params":["0xAcE8E719899F6E91831B18AE746C9A965c2119F1","latest"],"result_hash":"f9815488f8e13790e1d6d0e4dd605121031f5abf4c8b0d945524a97d66bd2222","slot":null},{"block":null,"method":"eth_getCode","params":["0xAcE8E719899F6E91831B18AE746C9A965c2119F1","latest"],"result_hash":"f9815488f8e13790e1d6d0e4dd605121031f5abf4c8b0d945524a97d66bd2222","slot":null}],"registry_entry":{"chain":"ethereum","contract":"0xAcE8E719899F6E91831B18AE746C9A965c2119F1","decimals":null,"issuer":"Ondo","last_checked":"2026-10-18T18:54:11Z","name":"Ondo U.S. Dollar Token","official_deployments":[{"address":"0xAcE8E719899F6E91831B18AE746C9A965c2119F1","network":"Ethereum"},{"address":"0x1f8955E640Cbd9abc3C3Bb408c9E2E1f5F20DfE6","network":"BNB Chain"},{"address":"ZPFtoCe7WWqG4N3ZFRccS8T9SMBeHsd1Vmgv2i7ondo","network":"Solana"}],"source":"https://docs.ondo.finance/addresses.md","source_url":"https://www.dropbox.com/scl/fi/qjfxyg748mx0dwi6up86d/EXTERNAL-Ondo-GM-Tokens-Ondo-GM-Tokens.csv?rlkey=n3no1w78wrah3umsl0nr9s77i&e=2&st=spdit2q1&dl=1","ticker":"USD"},"registry_hash":"e40a8f7ec2f1a2c1d6467a45e0976602299513549c0406d646df02a3ecb928c8","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x8af89bb8c84824ae37f5282a8e26b8982dc4f68a30b5541e69a47e7eefb02860","ticker":"USD","verdict":{"Verified":{"issuer":"Ondo","ticker":"USD"}},"version":1}
Signature
EzDLuT8Q178rCjzDKLz5SjUJCpxtiGBZDRLDEHHBeUQXnVrBCl8TI2dx4Tb98/eBVxHlgb9CYdLEtju8aBvfBw==
API call
GET /api/attest/8a7edfc240047853a4f5bf6d1fd844b10b32bfc0d2f320e2e9907cf0becda2cd
  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.