# EraSummary

Summary of an era retrieved from the blockchain, including a merkle proof for verification.

## Import

```ts
import { EraSummary } from 'casper-js-sdk';
```

## Class

### `EraSummary`

| Property | Type | Description |
|---|---|---|
| `blockHash` | `Hash` | Hash of the block this summary is from |
| `eraID` | `number` | Era identifier |
| `storedValue` | `StoredValue` | The stored value (typically contains `EraInfo`) |
| `stateRootHash` | `Hash` | State root hash at time of query |
| `merkleProof` | `string` | Merkle proof string for verification |

#### Constructor

```ts
new EraSummary(
  blockHash: Hash,
  eraID: number,
  storedValue: StoredValue,
  stateRootHash: Hash,
  merkleProof: string
)
```

## Usage

```ts
import { RpcClient, HttpHandler } from 'casper-js-sdk';

const client = new RpcClient(new HttpHandler('http://node:7777/rpc'));

const { eraSummary } = await client.getEraSummaryLatest();

console.log('Era ID:', eraSummary.eraID);
console.log('Block hash:', eraSummary.blockHash.toHex());

const eraInfo = eraSummary.storedValue.eraInfo;
if (eraInfo) {
  console.log('Allocations:', eraInfo.seigniorageAllocations.length);
}
```

## See Also

- [`getEraSummaryLatest`](/actions/auction/getEraSummaryLatest) - RPC action returning `EraSummary`
- [`EraInfo`](/types/era-info) - Seigniorage allocations
- [`StoredValue`](/types/stored-value) - Contains `EraInfo`