Does SILon / 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":128939226,"chain":"bnb","checked_at":"2026-10-21T12:37:15Z","dev":false,"expires_at":"2026-10-22T12:37:15Z","issuer":"Ondo","pool":{"base":{"address":"0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","balance":"2073878669514807196","decimals":18,"symbol":"SILon"},"chain":"bnb","dex":"pancake-v3","pool":"0xa666802F74177e7f866A77e18c6ab80C309bc68f","quote":{"address":"0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","balance":"413900454712979556721","decimals":18,"symbol":"JPF"}},"quote_share_of_supply":0.1294127301299864,"reads":[{"block":128939226,"method":"eth_blockNumber","params":[],"result_hash":"9c4dbfa6a0307e0c5534f330abcba68b1e2f6fba8cf17756dfcb7b2d41dd80f3","slot":null},{"block":null,"method":"eth_call","params":["0xa666802F74177e7f866A77e18c6ab80C309bc68f","token0()"],"raw_result":"0x6a4c1b7aa18638fac4c8e0d1961405e27c25baf1","result_hash":"47ce0c33a1d3bcbf808829f2973763027c79cf0513927085cdf454bde7b423e2","slot":null},{"block":null,"method":"eth_call","params":["0xa666802F74177e7f866A77e18c6ab80C309bc68f","token1()"],"raw_result":"0x70c629478707c8a4eae7fdc0ee54a9f61bee4901","result_hash":"3b2c8aa6ac7f4aeb3f10f406093b5b9378cfd8c6a5b3f996e1cdd7394e2f6a85","slot":null},{"block":null,"method":"eth_call","params":["0xa666802F74177e7f866A77e18c6ab80C309bc68f","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xa666802F74177e7f866A77e18c6ab80C309bc68f","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xa666802F74177e7f866A77e18c6ab80C309bc68f","factory()"],"raw_result":"0x0bfbcf9fa4f9c56b0f40a671ad40e0805a091865","result_hash":"2e3d0bedb6ff98db8ecf6c7b57f2028219517abe46f0f5212ff489a2c45cafbd","slot":null},{"block":null,"method":"eth_call","params":["0xa666802F74177e7f866A77e18c6ab80C309bc68f","fee()"],"raw_result":"10000","result_hash":"328d48ab2376d2f42d3af5ba69086143c8f5fe883ed195a8280b2154a5711a33","slot":null},{"block":null,"method":"eth_call","params":["0x0BFbCF9fa4f9C56B0F40a671Ad40E0805A091865","getPool","0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","0x70c629478707c8A4eAe7FDc0EE54A9F61bEE4901","0x2710"],"raw_result":"0xa666802f74177e7f866a77e18c6ab80c309bc68f","result_hash":"e14ef3265e430bf454f60959300775d57ca90080d61f5ec100628cce1b33c2f0","slot":null},{"block":null,"method":"eth_call","params":["0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","symbol()"],"raw_result":"Some(\"SILon\")","result_hash":"cf9d0fd3dabbf1531548846ae45e50535bb090a8dfe7ee595ebb66de2421b69a","slot":null},{"block":null,"method":"eth_call","params":["0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","balanceOf","0xa666802F74177e7f866A77e18c6ab80C309bc68f"],"raw_result":"Some(\"2073878669514807196\")","result_hash":"8a532d1968abc42e5603a134f04b06162c6201e2237bf91025e2a953df4a3dc0","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","0xa666802F74177e7f866A77e18c6ab80C309bc68f"],"raw_result":"Some(\"413900454712979556721\")","result_hash":"23f648dbab8de38fab2dde7e4af9b4791960727e305beb5228999844f4e84388","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":["0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","symbol()"],"raw_result":"Some(\"SILon\")","result_hash":"cf9d0fd3dabbf1531548846ae45e50535bb090a8dfe7ee595ebb66de2421b69a","slot":null},{"block":null,"method":"eth_call","params":["0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","name()"],"raw_result":"Some(\"Global X Silver Miners ETF (Ondo Tokenized)\")","result_hash":"3b6e6ccce50a2ce9e27cc341da4ff1920e4fb9925fa5b5a62c111b6602c0f44e","slot":null},{"block":null,"method":"eth_call","params":["0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","totalSupply()"],"raw_result":"Some(\"16025306532299688925\")","result_hash":"9b7c6db5b0cc4b5feb907fdc385fc29898ddd2d027ac11c0800b6ee186417539","slot":null},{"block":null,"method":"eth_getCode","params":["0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null},{"block":null,"method":"eth_getCode","params":["0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null}],"registry_entry":{"chain":"bnb","contract":"0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","decimals":null,"issuer":"Ondo","last_checked":"2026-10-20T22:40:22Z","name":"Global X Silver Miners ETF (Ondo Tokenized)","official_deployments":[{"address":"0x603E505799511155A9216D37cF9e051171240b4c","network":"Ethereum"},{"address":"0x6A4c1B7aA18638fac4C8e0d1961405E27C25baf1","network":"BNB Chain"},{"address":"uiSLmtLdqxtbQq5gkwYBvBrZpnSNXZn8h6sjLsDondo","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":"SIL"},"registry_hash":"93152e39c695658a34c9bda84906234fcad15c3b04c297499cf30850c38509bd","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xa666802F74177e7f866A77e18c6ab80C309bc68f","ticker":"SIL","verdict":{"Verified":{"issuer":"Ondo","ticker":"SIL"}},"version":1}

Signature

HJHSdN5GDYB5+F+yq4v4Xd1xQUAjmWRU6mPQEhp93zvXqWRoQtS7O3IMb7QHvtFVV4cVJmYk+36xLNUxFiuZAg==

API call

GET /api/attest/952ff544633306f146f0047e398da3b6dad0346cbc04555d046fb51a9c09adc4

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.