Does VZon / JPF 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":128479238,"chain":"bnb","checked_at":"2026-10-19T03:05:44Z","dev":false,"expires_at":"2026-10-20T03:05:44Z","issuer":"Ondo","pool":{"base":{"address":"0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","balance":"530047926847849879388","decimals":18,"symbol":"JPF"},"chain":"bnb","dex":"pancake-v3","pool":"0xa1D6fde851B82b82eda4fC627E4baFe5135Eb431","quote":{"address":"0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","balance":"2775280397970027033","decimals":18,"symbol":"VZon"}},"quote_share_of_supply":0.07039608842384915,"reads":[{"block":128479238,"method":"eth_blockNumber","params":[],"result_hash":"a6ee5752db8d7f964acaa6c41577d69a31e1191dd2c3ee0e25acb4c32cad8586","slot":null},{"block":null,"method":"eth_call","params":["0xa1D6fde851B82b82eda4fC627E4baFe5135Eb431","token0()"],"raw_result":"0x70c629478707c8a4eae7fdc0ee54a9f61bee4901","result_hash":"3b2c8aa6ac7f4aeb3f10f406093b5b9378cfd8c6a5b3f996e1cdd7394e2f6a85","slot":null},{"block":null,"method":"eth_call","params":["0xa1D6fde851B82b82eda4fC627E4baFe5135Eb431","token1()"],"raw_result":"0xa3b089c886e6d721f49def8e050f3b9d4362560b","result_hash":"bf5bc964411bf1dfe2342b6892f6b14721fee38838fb6af0795b7aac0e50d482","slot":null},{"block":null,"method":"eth_call","params":["0xa1D6fde851B82b82eda4fC627E4baFe5135Eb431","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xa1D6fde851B82b82eda4fC627E4baFe5135Eb431","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xa1D6fde851B82b82eda4fC627E4baFe5135Eb431","factory()"],"raw_result":"0x0bfbcf9fa4f9c56b0f40a671ad40e0805a091865","result_hash":"2e3d0bedb6ff98db8ecf6c7b57f2028219517abe46f0f5212ff489a2c45cafbd","slot":null},{"block":null,"method":"eth_call","params":["0xa1D6fde851B82b82eda4fC627E4baFe5135Eb431","fee()"],"raw_result":"10000","result_hash":"328d48ab2376d2f42d3af5ba69086143c8f5fe883ed195a8280b2154a5711a33","slot":null},{"block":null,"method":"eth_call","params":["0x0BFbCF9fa4f9C56B0F40a671Ad40E0805A091865","getPool","0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","0x2710"],"raw_result":"0xa1d6fde851b82b82eda4fc627e4bafe5135eb431","result_hash":"9c9cdad433f86942e9d0032b6ce9ee23d8f1411b48351a5b2f8cf86f1e29da82","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","symbol()"],"raw_result":"Some(\"JPF\")","result_hash":"8d248370e596f231428822df40bc446c95db691f13ab32d43949b87c5e60288a","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","balanceOf","0xa1D6fde851B82b82eda4fC627E4baFe5135Eb431"],"raw_result":"Some(\"530047926847849879388\")","result_hash":"a47f91e2cb59d7a5011f61b101e0757df11a7965a12f6fe9d7b057b7188a7560","slot":null},{"block":null,"method":"eth_call","params":["0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","symbol()"],"raw_result":"Some(\"VZon\")","result_hash":"ed99e5364ff310c108432c894a9e324ce12bebb1833813a7f75b182f04539cc1","slot":null},{"block":null,"method":"eth_call","params":["0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","balanceOf","0xa1D6fde851B82b82eda4fC627E4baFe5135Eb431"],"raw_result":"Some(\"2775280397970027033\")","result_hash":"d21f097260375435028c9bee2b3e37b6eb0dc37590c7e0ae735c272863f597ba","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","symbol()"],"raw_result":"Some(\"JPF\")","result_hash":"8d248370e596f231428822df40bc446c95db691f13ab32d43949b87c5e60288a","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","name()"],"raw_result":"Some(\"Julius personal farm\")","result_hash":"08820e6e2c3ef656296efff8784b08c17ac97ed4636beb4b65a6f88a7ea27eb0","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","totalSupply()"],"raw_result":"Some(\"1000000000000000000000000\")","result_hash":"29e309e3b943b514eee171b0c8f1348f1e8e33614ee2211fddb192da1a765d10","slot":null},{"block":null,"method":"eth_call","params":["0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","symbol()"],"raw_result":"Some(\"VZon\")","result_hash":"ed99e5364ff310c108432c894a9e324ce12bebb1833813a7f75b182f04539cc1","slot":null},{"block":null,"method":"eth_call","params":["0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","name()"],"raw_result":"Some(\"Verizon (Ondo Tokenized)\")","result_hash":"09e032a9f86c6cf93f5815ef56056bccd77751ad8fcb8dfc4ef3aa20cae5fb38","slot":null},{"block":null,"method":"eth_call","params":["0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","totalSupply()"],"raw_result":"Some(\"39423787032885809163\")","result_hash":"14a5374a9d70d9d27483fdafa36f37e3e4e5c1a87ee3976e3d5d2811b9af812d","slot":null},{"block":null,"method":"eth_getCode","params":["0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null},{"block":null,"method":"eth_getCode","params":["0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null}],"registry_entry":{"chain":"bnb","contract":"0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","decimals":null,"issuer":"Ondo","last_checked":"2026-10-18T20:40:22Z","name":"Verizon (Ondo Tokenized)","official_deployments":[{"address":"0x0e3D889D5B857C3e6eb361B9C9aE35bb7DdbD254","network":"Ethereum"},{"address":"0xA3B089C886E6d721f49DEF8E050F3b9D4362560B","network":"BNB Chain"},{"address":"igu1coP6n3GPaWmbd8J9Z7UAyLpV254uQFFNfydondo","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":"VZ"},"registry_hash":"0bd20861acb250fc115ebe98f0dbbb7c686b15c772a071c9020aa5154f2d195f","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xa1D6fde851B82b82eda4fC627E4baFe5135Eb431","ticker":"VZ","verdict":{"Verified":{"issuer":"Ondo","ticker":"VZ"}},"version":1}

Signature

uGJFFaCdrQpbjRfjePiDk38bCekhMIo7nCErwcQy+xraott28Xt9yDjYdRZL6lZ7EqtXcWK3/Qqc4yLzDkMiAQ==

API call

GET /api/attest/7311ff7d0e4a543b19b972ef3945d7d7790ece3ac26f84fd02e6dbb8bfd55194

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.