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

# Get Anchor

> Retrieve a single blockchain anchor with full detail.

## GET /api/v1/anchors/{id}

Retrieve a single anchor by ID. The detail response includes additional fields not present in the list response: `first_event_hash` and `last_event_hash`, which identify the hash chain boundaries for this anchor's period.

### Path Parameters

<ParamField path="id" type="string" required>
  The anchor identifier (e.g., `anc_abc123`).
</ParamField>

### Response

```json theme={null}
{
  "data": {
    "id": "anc_abc123",
    "merkle_root": "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08",
    "previous_anchor_hash": "4e07408562bedb8b60ce05c1decfe3ad16b72230967de01f640b7e4729b49fce",
    "first_event_hash": "a3f2c8d1e4b567890abcdef1234567890abcdef1234567890abcdef12345678",
    "last_event_hash": "7b9e1d3f5a2c67890abcdef1234567890abcdef1234567890abcdef12345678",
    "events_count": 1247,
    "period_start": "2026-03-27T00:00:00Z",
    "period_end": "2026-03-27T23:59:59Z",
    "chain": "base",
    "status": "confirmed",
    "tx_hash": "0x7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b",
    "block_number": 28451923,
    "explorer_url": "https://basescan.org/tx/0x7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b",
    "created_at": "2026-03-28T00:15:32Z"
  }
}
```

### Response Fields

| Field                  | Type            | Description                                                                                |
| ---------------------- | --------------- | ------------------------------------------------------------------------------------------ |
| `id`                   | string          | Unique anchor identifier                                                                   |
| `merkle_root`          | string          | 64-character hex SHA-256 Merkle root of events in this period                              |
| `previous_anchor_hash` | string \| null  | SHA-256 hash of the previous anchor's `merkle_root` + `tx_hash`. Null for the first anchor |
| `first_event_hash`     | string          | Hash of the first event in this anchor's period                                            |
| `last_event_hash`      | string          | Hash of the last event in this anchor's period                                             |
| `events_count`         | integer         | Number of events included in the Merkle tree                                               |
| `period_start`         | string          | ISO 8601 start of the anchoring period                                                     |
| `period_end`           | string          | ISO 8601 end of the anchoring period                                                       |
| `chain`                | string          | Blockchain network (`base`)                                                                |
| `status`               | string          | `pending`, `submitted`, or `confirmed`                                                     |
| `tx_hash`              | string \| null  | Blockchain transaction hash                                                                |
| `block_number`         | integer \| null | Block number of the confirmed transaction                                                  |
| `explorer_url`         | string \| null  | Direct link to the transaction on Basescan                                                 |
| `created_at`           | string          | ISO 8601 timestamp of anchor creation                                                      |

### Examples

<CodeGroup>
  ```bash cURL theme={null}
  curl https://getimmutable.dev/api/v1/anchors/anc_abc123 \
    -H "Authorization: Bearer imk_your_api_key_here"
  ```

  ```typescript JavaScript theme={null}
  import { ImmutableClient } from "getimmutable";

  const client = new ImmutableClient({
    apiKey: "imk_your_api_key_here",
    baseUrl: "https://getimmutable.dev",
  });

  const anchor = await client.getAnchor("anc_abc123");

  console.log(`Period: ${anchor.data.period_start} — ${anchor.data.period_end}`);
  console.log(`Events: ${anchor.data.events_count}`);
  console.log(`First event hash: ${anchor.data.first_event_hash}`);
  console.log(`Last event hash: ${anchor.data.last_event_hash}`);
  console.log(`Explorer: ${anchor.data.explorer_url}`);
  ```

  ```python Python theme={null}
  from getimmutable import ImmutableClient

  client = ImmutableClient(
      api_key="imk_your_api_key_here",
      base_url="https://getimmutable.dev",
  )

  anchor = client.get_anchor("anc_abc123")

  print(f"Period: {anchor['data']['period_start']} — {anchor['data']['period_end']}")
  print(f"Events: {anchor['data']['events_count']}")
  print(f"Explorer: {anchor['data']['explorer_url']}")
  ```

  ```php Laravel theme={null}
  use GetImmutable\AuditLog;

  $anchor = AuditLog::client()->getAnchor('anc_abc123');

  echo "Events: {$anchor['data']['events_count']}\n";
  echo "Explorer: {$anchor['data']['explorer_url']}\n";
  ```
</CodeGroup>

<Tip>
  The `first_event_hash` and `last_event_hash` fields let you identify exactly which segment of the hash chain is covered by this anchor. Use these to cross-reference with the [verify chain endpoint](/api-reference/verify-chain) for a specific time range.
</Tip>