> ## 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.BlockchainEvent.BlockchainEvent(string,string,string,string,System.DateTimeOffset)

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

## BlockchainEvent(string, string, string, string, DateTimeOffset) Constructor

Represents an event to be recorded on the blockchain for immutable logging.

```csharp theme={null}
public BlockchainEvent(string EventId, string EventType, string Payload, string? IpfsCid, System.DateTimeOffset Timestamp);
```

#### Parameters

<a name="ResQ.Blockchain.BlockchainEvent.BlockchainEvent(string,string,string,string,System.DateTimeOffset).EventId" />

`EventId` [System.String](https://learn.microsoft.com/en-us/dotnet/api/system.string "System.String")

Unique identifier for this event.

<a name="ResQ.Blockchain.BlockchainEvent.BlockchainEvent(string,string,string,string,System.DateTimeOffset).EventType" />

`EventType` [System.String](https://learn.microsoft.com/en-us/dotnet/api/system.string "System.String")

The type/category of the event.

<a name="ResQ.Blockchain.BlockchainEvent.BlockchainEvent(string,string,string,string,System.DateTimeOffset).Payload" />

`Payload` [System.String](https://learn.microsoft.com/en-us/dotnet/api/system.string "System.String")

JSON payload containing event-specific data.

<a name="ResQ.Blockchain.BlockchainEvent.BlockchainEvent(string,string,string,string,System.DateTimeOffset).IpfsCid" />

`IpfsCid` [System.String](https://learn.microsoft.com/en-us/dotnet/api/system.string "System.String")

Optional IPFS Content Identifier for associated evidence.

<a name="ResQ.Blockchain.BlockchainEvent.BlockchainEvent(string,string,string,string,System.DateTimeOffset).Timestamp" />

`Timestamp` [System.DateTimeOffset](https://learn.microsoft.com/en-us/dotnet/api/system.datetimeoffset "System.DateTimeOffset")

UTC timestamp when the event occurred.

### Example

```csharp theme={null}
var evt = new BlockchainEvent(
    EventId: "evt-001",
    EventType: "IncidentDetected",
    Payload: "{\"incidentId\":\"inc-001\",\"severity\":\"High\"}",
    IpfsCid: "Qmabc123...",
    Timestamp: DateTimeOffset.UtcNow
);

var result = await neoClient.RecordEventAsync(evt);
```

### Remarks

Blockchain events provide an immutable audit trail of critical system activities.
Each event is assigned a unique ID and can optionally reference IPFS content
for additional evidence storage.