比特币/SPCXx

QED signs a canonical JSON payload. Fetch the public key from /.well-known/qed.json, then check the signature against this payload.

Canonical JSON

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xStocks","pool":{"base":{"address":"0x18d0e455B3491E09210292d3953157A4Bf104444","balance":"3407345818411241661883","decimals":18,"symbol":"比特币"},"chain":"Bnb","dex":"uniswap-v3","pool":"0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392","quote":{"address":"0x68fa48B1C2FE52b3D776E1953e0E782b5044Ce28","balance":"3169574418994125695","decimals":18,"symbol":"SPCXx"}},"quote_share_of_supply":0.00010565248063313752,"reads":[{"block":null,"method":"eth_getCode","params":["0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392","latest"],"result_hash":"1c9409806518d1a5f52d79299ea0289ea2ff527e05895cd8f7a36d4cca28a13e","slot":null},{"block":null,"method":"eth_getCode","params":["0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392","latest"],"result_hash":"1c9409806518d1a5f52d79299ea0289ea2ff527e05895cd8f7a36d4cca28a13e","slot":null},{"block":null,"method":"eth_getCode","params":["0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392","latest"],"result_hash":"1c9409806518d1a5f52d79299ea0289ea2ff527e05895cd8f7a36d4cca28a13e","slot":null},{"block":null,"method":"eth_getCode","params":["0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392","latest"],"result_hash":"85a298c0aebd578878b249118abd7df73931805c6eaba7a62358b81a74a8b466","slot":null},{"block":124812670,"method":"eth_blockNumber","params":[],"result_hash":"55c5a1ee69c2d6b3ab54e8b877e2d7df2030663dd18e8e6061d6368bb44e86ca","slot":null},{"block":null,"method":"eth_call","params":["0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392","token0()"],"raw_result":"0x18d0e455b3491e09210292d3953157a4bf104444","result_hash":"8bdef4b93a8e327bcf767bd3f339c81d34d1067224b7efa85403b3e3b14f0a6a","slot":null},{"block":null,"method":"eth_call","params":["0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392","token1()"],"raw_result":"0x68fa48b1c2fe52b3d776e1953e0e782b5044ce28","result_hash":"7026d35b349fb3ae6aeb1941c7ca31f197ef75d99776e799ff166b519319b6ad","slot":null},{"block":null,"method":"eth_call","params":["0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392","getReserves()"],"raw_result":"false","result_hash":"076de6e730df0b4c3860877a0f619c6ac11f8aefd78313ac793a2a703c026869","slot":null},{"block":null,"method":"eth_call","params":["0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392","slot0()"],"raw_result":"true","result_hash":"18d10c7d2b4b04aaf04254d1ae5d655a5dc0407cbcdd5a8c3986e985370f36ee","slot":null},{"block":null,"method":"eth_call","params":["0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392","factory()"],"raw_result":"Some(0xdb1d10011ad0ff90774d0c6bb92e5c5c8b4461f7)","result_hash":"f526dcaa1dde49f87c95d32c422e8b162aead301aa01bf1d7361e259b49821cc","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","0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392"],"raw_result":"Some(\"3407345818411241661883\")","result_hash":"82b7952064856988b82c7d4df3174bec2334cd197bec43401c256c9bcb469cb1","slot":null},{"block":null,"method":"eth_call","params":["0x68fa48B1C2FE52b3D776E1953e0E782b5044Ce28","symbol()"],"raw_result":"Some(\"SPCXx\")","result_hash":"965a6f237aaee688ad603e4d33f980be96f2d8a203b54e7af87e31a5fa74821b","slot":null},{"block":null,"method":"eth_call","params":["0x68fa48B1C2FE52b3D776E1953e0E782b5044Ce28","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x68fa48B1C2FE52b3D776E1953e0E782b5044Ce28","balanceOf","0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392"],"raw_result":"Some(\"3169574418994125695\")","result_hash":"7afdff2e49f19bcb220e2f7a756b7696f1364d87c792b35aa94194c473f33c2d","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":["0x68fa48B1C2FE5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xStock\")","result_hash":"f3e330aa060e551d81d53f26682fa521fc98ad2f6852293752beef7a3402d2ba","slot":null},{"block":null,"method":"eth_call","params":["0x68fa48B1C2FE52b3D776E1953e0E782b5044Ce28","decimals()"],"raw_result":"Some(18)","result_hash":"c14f173ff30df32f36fac2ea29d9a20482082428fd32b58be5433d310884f764","slot":null},{"block":null,"method":"eth_call","params":["0x68fa48B1C2FE52b3D776E1953e0E782b5044Ce28","totalSupply()"],"raw_result":"Some(\"30000000000000000000000\")","result_hash":"f58df2281be0e1c0220b2420756d44903745865f20558e1b9dbb1329a68c48b7","slot":null},{"block":null,"method":"eth_getCode","params":["0x68fa48B1C2FE52b3D776E1953e0E782b5044Ce28","latest"],"result_hash":"71ee049d0c0cab5d785d7aef2e6b591e511475fb8ef465f4d8f5335bfd412bfd","slot":null},{"block":null,"method":"eth_getCode","params":["0x68fa48B1C2FE52b3D776E1953e0E782b5044Ce28","latest"],"result_hash":"71ee049d0c0cab5d785d7aef2e6b591e511475fb8ef465f4d8f5335bfd412bfd","slot":null}],"registry_entry":{"chain":"Bnb","contract":"0x68fa48B1C2FE52b3D776E1953e0E782b5044Ce28","decimals":null,"issuer":"Backed xStocks","last_checked":"2026-09-29T23:37:23Z","name":"SpaceX","source":"xstocks-api","source_url":"https://api.xstocks.fi/api/v2/public/assets","ticker":"SPCX"},"registry_hash":"b3f72fc9046ef9a37e433405d5916bce13581b85d8cce5889f24cf56e53b77b4","signer":"GJWKkiUd3zj1pJGfeE7JitiPiwDJC6XmNFvpJWJuvvpn","slot":null,"subject":"0xB6d44183F8DB46C9A73d9Ac5a38041e71059f392","ticker":"SPCX","verdict":{"Verified":{"issuer":"Backed xStocks","ticker":"SPCX"}},"version":1}

Signature

TjJHnfuUS+1E+snO/gvgP67AdbXJkv2w4LYxNMqBO7/zcJSEqwON1fV/0Z7GcTXG6KrhciacL6BXCKRb4tW2BQ==

API call

GET /api/attest/56fef281088633de58b3ca83f0eeeb0d18fe50c20baa994b23caa605cb5db3ed

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.