> For the complete documentation index, see [llms.txt](https://docs.hashkey.id/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hashkey.id/protocol/contract-api-reference/kyc.md).

# KYC

#### Add KYC

Add KYC information obtained from a KYC provider.

```solidity
function addKYC(uint256 tokenId, address KYCProvider, uint256 KYCId, bool status, uint256 updateTime, uint256 expireTime, bytes memory evidence);
```

* tokenId: DID token id
* KYCProvider: KYC provider address
* KYCId: KYC level
* status: is KYCed or not
* updateTime: update time
* expireTime: expire time
* evidence: signature provided by KYCProvider

#### Get KYC Information

Retrieve the KYC information for a specific DID.

```solidity
function getKYCInfo(uint256 tokenId, address KYCProvider, uint256 KYCId);
```

* tokenId: DID token id
* KYCProvider: KYC provider address(you can find the [provider list](/protocol/kyc.md#kyc-providers))
* KYCId: KYC level