Secure Cross-Platform Identity Linking

GET /api/v1/crossPlatformIdentityLinking

• Through this API, under the premise of obtaining user authorization, you can query the Web3 address associated with a user's Web2 account or the Web2 account associated with a Web3 address and verify whether these accounts belong to the same individual. This data needs to be decrypted using the Lit Protocol.

• Header

Field	Type	Required	Remarks
ApiKey	String	true	ApiKey obtained from the administrator

• Request Parameters

Field	Type	Required	Remarks
address	String	fasle	EOA Address
twitterUsername	String	fasle	twitter username
steamId	String	fasle	steamId
sig	String	true	User authorization information (when provided with authorization details, developers can use Lit Protocol to decrypt the returned results).
message	String	true	Original text of user authorization information signature （Please refer to the original signature splicingSIWE.The statement field needs to be:Access to Secure Cross-Platform Identity Linking.)）

• Request Example

curl  GET 'https://api.relationlabs.ai/api/v1/crossPlatformIdentityLinking?address=0x9bd286ef4e3d9ec1af6c6ae9da2f0b3617deab13&sig=0x001111&message=example.com%20wants%20you%20to%20sign%20in%20with...' \
--header 'ApiKey: <ApiKey>'

• Response Parameters

Field	Type	Remarks
code	String	Return code
desc	String	Return message
data	EncryptedData	Data (Lit Protocol encrypted)

The Account field consists of the following subfields:

Field	Type	Remarks
relation	Relation	Relation information
address	List	Address list
twitter	Twitter	Twitter information
steam	Steam	Steam information

Data structure of the decrypted Twitter object

{
  "code": "0",
  "desc": "success",
  "data": {
    "address": [],
    "relation": {
      "relationId": "d4swz-zaaaa-aaaaj-at5fa-cai",
      "name": "test_user",
      "avatar": "https://3fypb-gqaaa-aaaag-aaedq-cai.ic1.io/nft/eth/relation-test-club/16.png"
    },
    "twitter": {
      "username": "VitalikButerin",
      "name": "vitalik.eth",
      "avatar": "https://pbs.twimg.com/profile_images/977496875887558661/L86xyLF4_400x400.jpg"
    },
    "steam": {
      "steamId": "178691028912",
      "name": "vitalik",
      "avatar": "https://pbs.twimg.com/profile_images/977496875887558661/L86xyLF4_400x400.jpg"
    }
  }
}

• Response Body

{
  "code": "0",
  "desc": "success",
  "data": {
    "encryptedString": "xxx",
    "encryptedSymmetricKey": "xxx"
  }
}

• Return Code

code	desc	Remarks
0	success	the flag for a successful request