# BlockRequest
A BlockRequest is utilized to make a block request on the /block endpoint.
## Example Usage
```typescript
import { BlockRequest } from "icpmcp-rosetta-api";
let value: BlockRequest = {
networkIdentifier: {
blockchain: "bitcoin",
network: "mainnet",
subNetworkIdentifier: {
network: "shard 1",
metadata: {},
},
},
blockIdentifier: {
index: 1123941,
hash: "0x1f2cc6c5027d2f201a5453ad1119574d2aed23a392654742ac3c78783c071f85",
},
};
```
## Fields
| Field | Type | Required | Description |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `networkIdentifier` | [models.NetworkIdentifier](../models/networkidentifier.md) | :heavy_check_mark: | The network_identifier specifies which network a particular object is associated with. |
| `blockIdentifier` | [models.PartialBlockIdentifier](../models/partialblockidentifier.md) | :heavy_check_mark: | When fetching data by BlockIdentifier, it may be possible to only specify the index or hash. If neither property is specified, it is assumed that the client is making a request at the current block. |
