# CertIdleSpace

This is the interface for the storage miner to authenticate the idle space to the chain, when the storage miner finishes generating idle data, it needs to call this interface to authenticate to the chain, if the authentication passes, the idle space of the storage miner will be increased.

```golang
// CertIdleSpace authenticates idle file to the chain
//   - spaceProofInfo: space proof info
//   - teeSignWithAcc: tee sign with account
//   - teeSign: tee sign
//   - teePuk: tee work public key
//
// Return:
//   - string: block hash
//   - error: error message
//
// Note:
//   - for storage miner use only
func (c *ChainClient) CertIdleSpace(spaceProofInfo SpaceProofInfo, teeSignWithAcc, teeSign types.Bytes, teePuk WorkerPublicKey) (string, error)
```

For the type definition, please refer to [SpaceProofInfo](https://github.com/CESSProject/doc-v2/blob/main/developer/cess-sdk/sdk-golang/chain_related/chain_type.md#SpaceProofInfo), [WorkerPublicKey](https://github.com/CESSProject/doc-v2/blob/main/developer/cess-sdk/sdk-golang/chain_related/chain_type.md#Type-definition)

For example code, please refer to [attestation\_idle.go](https://github.com/CESSProject/cess-miner/blob/main/node/attestation_idle.go)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://doc.cess.network/developer/cess-sdk/sdk-golang/chain_related/file_bank/certidlespace.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.