Does CRCLon / 比特币 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":128415158,"chain":"bnb","checked_at":"2026-10-18T19:04:57Z","dev":false,"expires_at":"2026-10-19T19:04:57Z","issuer":"Ondo","pool":{"base":{"address":"0x18d0e455B3491E09210292d3953157A4Bf104444","balance":"44444314753922065339846","decimals":18,"symbol":"比特币"},"chain":"bnb","dex":"pancake-v3","pool":"0xc1d141d6A9F8e8eb7B9Ce1AEcD4A8932F047c075","quote":{"address":"0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","balance":"39535690892061074385","decimals":18,"symbol":"CRCLon"}},"quote_share_of_supply":0.00003902344108183265,"reads":[{"block":128415158,"method":"eth_blockNumber","params":[],"result_hash":"adae48e9eb6f8f24b46821d100149270bc8c8ad477258ab069ee01228d4af35b","slot":null},{"block":null,"method":"eth_call","params":["0xc1d141d6A9F8e8eb7B9Ce1AEcD4A8932F047c075","token0()"],"raw_result":"0x18d0e455b3491e09210292d3953157a4bf104444","result_hash":"8bdef4b93a8e327bcf767bd3f339c81d34d1067224b7efa85403b3e3b14f0a6a","slot":null},{"block":null,"method":"eth_call","params":["0xc1d141d6A9F8e8eb7B9Ce1AEcD4A8932F047c075","token1()"],"raw_result":"0x992879cd8ce0c312d98648875b5a8d6d042cbf34","result_hash":"72aa3ac5ca19d163ab56f15dc0bced9259a4ec06234c79cada81e36b231b9a2f","slot":null},{"block":null,"method":"eth_call","params":["0xc1d141d6A9F8e8eb7B9Ce1AEcD4A8932F047c075","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xc1d141d6A9F8e8eb7B9Ce1AEcD4A8932F047c075","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xc1d141d6A9F8e8eb7B9Ce1AEcD4A8932F047c075","factory()"],"raw_result":"0x0bfbcf9fa4f9c56b0f40a671ad40e0805a091865","result_hash":"2e3d0bedb6ff98db8ecf6c7b57f2028219517abe46f0f5212ff489a2c45cafbd","slot":null},{"block":null,"method":"eth_call","params":["0xc1d141d6A9F8e8eb7B9Ce1AEcD4A8932F047c075","fee()"],"raw_result":"2500","result_hash":"c470156de4cb3620b0749c19d984d0666924d83d0ec37998dd6b637a87a2ec3b","slot":null},{"block":null,"method":"eth_call","params":["0x0BFbCF9fa4f9C56B0F40a671Ad40E0805A091865","getPool","0x18d0e455B3491E09210292d3953157A4Bf104444","0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","0x9c4"],"raw_result":"0xc1d141d6a9f8e8eb7b9ce1aecd4a8932f047c075","result_hash":"3716b915dfd96435134fc11fd88e7536f77dd58d41f698119aa3ff607bd663e4","slot":null},{"block":null,"method":"eth_call","params":["0x18d0e455B3491E09210292d3953157A4Bf104444","symbol()"],"raw_result":"Some(\"比特币\")","result_hash":"713201f538a68ecc1b2cfb0b153ffa8a29f7202e140546ed5e41cd6217f174c0","slot":null},{"block":null,"method":"eth_call","params":["0x18d0e455B3491E09210292d3953157A4Bf104444","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x18d0e455B3491E09210292d3953157A4Bf104444","balanceOf","0xc1d141d6A9F8e8eb7B9Ce1AEcD4A8932F047c075"],"raw_result":"Some(\"44444314753922065339846\")","result_hash":"7df9ded570fd708a92bf769650440686cecddbe70624be589d57bc28eb6d2a35","slot":null},{"block":null,"method":"eth_call","params":["0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","symbol()"],"raw_result":"Some(\"CRCLon\")","result_hash":"a316363f74ded0cebdc1680b005119534f08cf8ef761065a840d1dd04a2186f8","slot":null},{"block":null,"method":"eth_call","params":["0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","balanceOf","0xc1d141d6A9F8e8eb7B9Ce1AEcD4A8932F047c075"],"raw_result":"Some(\"39535690892061074385\")","result_hash":"2320a7396878c99ee69d3bc4de2c9af5b5ae6b3d4c48cff35f9946d3c7331e17","slot":null},{"block":null,"method":"eth_call","params":["0x18d0e455B3491E09210292d3953157A4Bf104444","symbol()"],"raw_result":"Some(\"比特币\")","result_hash":"713201f538a68ecc1b2cfb0b153ffa8a29f7202e140546ed5e41cd6217f174c0","slot":null},{"block":null,"method":"eth_call","params":["0x18d0e455B3491E09210292d3953157A4Bf104444","name()"],"raw_result":"Some(\"比特币\")","result_hash":"713201f538a68ecc1b2cfb0b153ffa8a29f7202e140546ed5e41cd6217f174c0","slot":null},{"block":null,"method":"eth_call","params":["0x18d0e455B3491E09210292d3953157A4Bf104444","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x18d0e455B3491E09210292d3953157A4Bf104444","totalSupply()"],"raw_result":"Some(\"1000000000000000000000000000\")","result_hash":"9a5063c327faec672db6b50450571675cbfbcc3766ebaf6832c3a9f6636ff4d0","slot":null},{"block":null,"method":"eth_call","params":["0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","symbol()"],"raw_result":"Some(\"CRCLon\")","result_hash":"a316363f74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Internet Group (Ondo Tokenized)\")","result_hash":"5fbad373778c34ef5bc9f69357769adf1940b13f491167dfce2023ce5c4ba8bf","slot":null},{"block":null,"method":"eth_call","params":["0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","totalSupply()"],"raw_result":"Some(\"1013126720658852949236255\")","result_hash":"9517eba68666195a3eb0015fde4b6b19748e4e145b214b29e627657505ee0b67","slot":null},{"block":null,"method":"eth_getCode","params":["0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null},{"block":null,"method":"eth_getCode","params":["0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","latest"],"result_hash":"94608f5be99dad7eba2f1291156fff602e3d7e462e4517d8f65af38ba0f4b7b4","slot":null}],"registry_entry":{"chain":"bnb","contract":"0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","decimals":null,"issuer":"Ondo","last_checked":"2026-10-18T18:54:11Z","name":"Circle Internet Group (Ondo Tokenized)","official_deployments":[{"address":"0x3632DEa96A953C11dac2f00b4A05a32CD1063fAE","network":"Ethereum"},{"address":"0x992879Cd8ce0c312d98648875B5A8D6D042cbF34","network":"BNB Chain"},{"address":"6xHEyem9hmkGtVq6XGCiQUGpPsHBaoYuYdFNZa5ondo","network":"Solana"},{"address":"0x13a81c5e8b4AB05Fc721DfF7bA95e250b29458F8","network":"HyperEVM"}],"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":"CRCL"},"registry_hash":"e40a8f7ec2f1a2c1d6467a45e0976602299513549c0406d646df02a3ecb928c8","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xc1d141d6A9F8e8eb7B9Ce1AEcD4A8932F047c075","ticker":"CRCL","verdict":{"Verified":{"issuer":"Ondo","ticker":"CRCL"}},"version":1}

Signature

RS5JIfsYpfWGA2GjxHe1e9g8rkmVqo1MljArkBPiqpFYRRgs6dTcHE2LCwPhjA+Dmk+XDyfNcVvsGI8v6SRFAg==

API call

GET /api/attest/a561f26795d6954a9aac05393e29686ddef3b96d51842f78edd780bf71ba0f67

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.