> ## Documentation Index
> Fetch the complete documentation index at: https://docs.resq.software/llms.txt
> Use this file to discover all available pages before exploring further.

# ResQ.Blockchain.NeoClientOptions.ContractHash

### [ResQ.Blockchain](./ResQ.Blockchain.md "ResQ.Blockchain").[NeoClientOptions](./ResQ.Blockchain.NeoClientOptions.md "ResQ.Blockchain.NeoClientOptions")

## NeoClientOptions.ContractHash Property

Gets or sets the smart contract script hash for ResQ event recording.

```csharp theme={null}
public string ContractHash { get; set; }
```

#### Property Value

[System.String](https://learn.microsoft.com/en-us/dotnet/api/system.string "System.String")\
The 40-character hexadecimal contract script hash.

### Example

```csharp theme={null}
options.ContractHash = "0x8d35a57f8c01156527c92ebbb4d772fa9574cbf4";
```

### Remarks

This is the hash of the deployed smart contract that handles ResQ events.
It must be set to a valid contract hash for blockchain operations to succeed.