QED
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QED certificate

QED record 195519ee844f from . View the live pool page.

Verified · Ondo BLK

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

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

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
BLKon / USDC · Ethereum
Pool address
0x1f3c48910169bbfeec9163c6a42e842ea0f8b525a5c9095eefdf544a86234a49
Issuer match
Ondo · BLK · View BLK contracts
Checked
Valid until
Serial
195519ee844f
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":26225666,"chain":"ethereum","checked_at":"2026-10-19T09:16:19Z","dev":false,"expires_at":"2026-10-20T09:16:19Z","issuer":"Ondo","pool":{"base":{"address":"0x7a0F89c1606f71499950AA2590d547c3975B728E","balance":"148341202180645382","decimals":18,"symbol":"BLKon"},"chain":"ethereum","dex":"uniswap-v4","pool":"0x1f3c48910169bbfeec9163c6a42e842ea0f8b525a5c9095eefdf544a86234a49","quote":{"address":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48","balance":"233355769","decimals":6,"symbol":"USDC"}},"quote_share_of_supply":0.00008703967439219232,"reads":[{"block":null,"method":"eth_call","params":["0xbd216513d74c8cf14cf4747e6aaa6420ff64ee9e","poolKeys","0x1f3c48910169bbfeec9163c6a42e842ea0f8b525a5c9095eef"],"raw_result":"Object {\"currency0\": String(\"0x7a0f89c1606f71499950aa2590d547c3975b728e\"), \"currency1\": String(\"0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48\"), \"fee\": String(\"300000\"), \"hooks\": String(\"0x0000000000000000000000000000000000000000\"), \"tickSpacing\": String(\"6000\")}","result_hash":"2e5c0bb2f8274c4a51732149baa9a145d65d1cce408e89587d2e235e5de8b561","slot":null},{"block":null,"method":"eth_call","params":["0x7ffe42c4a5deea5b0fec41c94c136cf115597227","getSlot0","0x1f3c48910169bbfeec9163c6a42e842ea0f8b525a5c9095eefdf544a86234a49"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0x7ffe42c4a5deea5b0fec41c94c136cf115597227","getLiquidity","0x1f3c48910169bbfeec9163c6a42e842ea0f8b525a5c9095eefdf544a86234a49"],"raw_result":"5883559750190","result_hash":"fdf17cf9a12b1648af7470fadbd918ffd67239f24fdc799c45c90134c8a842ac","slot":null},{"block":null,"method":"eth_call","params":["0x7a0F89c1606f71499950AA2590d547c3975B728E","symbol()"],"raw_result":"Some(\"BLKon\")","result_hash":"dfc54f7f9da26f67e6724f464900f80bc8a63dabae7ccdb9232ebe718dde34a4","slot":null},{"block":null,"method":"eth_call","params":["0x7a0F89c1606f71499950AA2590d547c3975B728E","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":26225666,"method":"eth_blockNumber","params":[],"result_hash":"32b7a4ca782b28477a4d29eedd2c21b1b30e3fe9aa2b3338b056cda13328e2a9","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(\"48160624332556145\")","result_hash":"33d41c236171d38b34724035cdb5f36a880f4a53a4cf63873bf61fbe9eb56223","slot":null},{"block":null,"method":"eth_call","params":["0x7a0F89c1606f71499950AA2590d547c3975B728E","symbol()"],"raw_result":"Some(\"BLKon\")","result_hash":"dfc54f7f9da26f67e6724f464900f80bc8a63dabae7ccdb9232ebe718dde34a4","slot":null},{"block":null,"method":"eth_call","params":["0x7a0F89c1606f71499950AA2590d547c3975B728E","name()"],"raw_result":"Some(\"Blackrock, Inc. (Ondo Tokenized)\")","result_hash":"c4647794d70bf7677d81f10530d61ba0ee8fef9c9ec26874cbbb7929ec6c4e17","slot":null},{"block":null,"method":"eth_call","params":["0x7a0F89c1606f71499950AA2590d547c3975B728E","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x7a0F89c1606f71499950AA2590d547c3975B728E","totalSupply()"],"raw_result":"Some(\"1704294084468127701710\")","result_hash":"06b0a2cf5f1097a6fa4e661edbf18ee496fb3808519022955054c406e6aea79e","slot":null},{"block":null,"method":"eth_getCode","params":["0x7a0F89c1606f71499950AA2590d547c3975B728E","latest"],"result_hash":"8538a8190a64db88a5e0ec4c95f0129f9eecd6f3a3aacb869262b82d01d123ec","slot":null},{"block":null,"method":"eth_getCode","params":["0x7a0F89c1606f71499950AA2590d547c3975B728E","latest"],"result_hash":"8538a8190a64db88a5e0ec4c95f0129f9eecd6f3a3aacb869262b82d01d123ec","slot":null}],"registry_entry":{"chain":"ethereum","contract":"0x7a0F89c1606f71499950AA2590d547c3975B728E","decimals":null,"issuer":"Ondo","last_checked":"2026-10-18T20:40:22Z","name":"Blackrock, Inc. (Ondo Tokenized)","official_deployments":[{"address":"0x7a0F89c1606f71499950AA2590d547c3975B728E","network":"Ethereum"},{"address":"0x24F5471183eA549987f245D6ce236B6108869C92","network":"BNB Chain"},{"address":"5H1VpMzRuoNtRbPTRCz35ETtEUtnkt8hJuQb9v7ondo","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":"BLK"},"registry_hash":"cae30e4647e421306c11bce2b38fdd359eeecbb2567d393bf8b2a8e3d38c56d5","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0x1f3c48910169bbfeec9163c6a42e842ea0f8b525a5c9095eefdf544a86234a49","ticker":"BLK","verdict":{"Verified":{"issuer":"Ondo","ticker":"BLK"}},"version":1}
Signature
fHu82G/F3asOQWw+vatamPzyiKinC0S2MIXBBW3YzUcEjCiOd4BCOdymtPeM6mJhYXfsa+emUuF2Ht/M+iw/DQ==
API call
GET /api/attest/195519ee844f309236b7a29f148af6b14ce42aed521edc021c66d0ddab3fe677
  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.