# OTC Lockup Listing Event History

Immutable event log for lockup listings: created, updated, cancelled, purchased, expired.

_Source: https://beta.taostats.io/docs/api-reference/otc/get-otc-lockup-listing-history_

_Last reviewed: 2026-09-18_

```http
GET https://api.taostats.io/api/otc/lockup/listing/history/v1
```

Requires an API key in the `Authorization` header.

Immutable event log for lockup listings: `created`, `updated`, `cancelled`, `purchased`, `expired`. Each event records the executed price, escrow account, lockup duration, unlock block, and extrinsic context. For current lockup listing state use `/api/otc/lockup/listing/v1`.

## Try it

Try this request in the browser on the HTML version of this page, or use the code samples below.

### Examples

See the event history for OTC lockup listings in subnet 19

```text
https://api.taostats.io/api/otc/lockup/listing/history/v1?netuid=19&order=block_number_desc&limit=50
```

### Code samples

**cURL**

```bash
curl -H "Authorization: <YOUR_API_KEY>" \
  "https://api.taostats.io/api/otc/lockup/listing/history/v1?netuid=19&limit=50&order=block_number_desc"
```

**JavaScript**

```js
const response = await fetch('https://api.taostats.io/api/otc/lockup/listing/history/v1?netuid=19&limit=50&order=block_number_desc', {
  headers: {
    Authorization: '<YOUR_API_KEY>',
  },
});
const data = await response.json();
```

**Python**

```python
import requests

response = requests.get(
    "https://api.taostats.io/api/otc/lockup/listing/history/v1?netuid=19&limit=50&order=block_number_desc",
    headers={"Authorization": "<YOUR_API_KEY>"},
)
data = response.json()
```

## Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `listing_id` | query | `string` |  | Filter to events for one specific lockup listing. |
| `event_type` | query | `string` |  | Event type: `created`, `updated`, `cancelled`, `purchased`, `expired`. One of `created`, `taken`, `cancelled`, `force_cancelled`, `filled`, `all`. |
| `seller` | query | `string` |  | Filter by seller coldkey. |
| `buyer` | query | `string` |  | Filter to events involving a specific buyer (e.g. `purchased`). |
| `hotkey` | query | `string` |  | Filter by hotkey. |
| `netuid` | query | `integer (int32)` |  | Subnet id. |
| `block_start` | query | `integer (int32)` |  | Earliest block (inclusive). |
| `block_end` | query | `integer (int32)` |  | Latest block (inclusive). |
| `timestamp_start` | query | `integer (int64)` |  | Earliest timestamp (seconds, inclusive). |
| `timestamp_end` | query | `integer (int64)` |  | Latest timestamp (seconds, inclusive). |
| `page` | query | `integer (int32)` |  | 1-based page number. |
| `limit` | query | `integer (int32)` |  | Page size (max 200). |
| `order` | query | `string` |  | Sort order. One of `block_number_asc`, `block_number_desc`, `timestamp_asc`, `timestamp_desc`. |

## Responses

### `200` — Lockup listing history retrieved successfully

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `data` | `array` | Yes |  |
| `data[].alpha_amount` | `string, nullable` |  |  |
| `data[].amount` | `string, nullable` |  |  |
| `data[].amount_returned` | `string, nullable` |  |  |
| `data[].block_number` | `integer (int32)` | Yes |  |
| `data[].buyer` | `object, nullable` |  |  |
| `data[].buyer.hex` | `string` | Yes | The hex format of the hot key |
| `data[].buyer.ss58` | `string` | Yes | The SS58 format of the hot key |
| `data[].escrow_account` | `string, nullable` |  |  |
| `data[].event_type` | `string` | Yes |  |
| `data[].executed_price` | `string, nullable` |  |  |
| `data[].extrinsic_id` | `string` | Yes |  |
| `data[].fee` | `string, nullable` |  |  |
| `data[].force_cancelled` | `boolean, nullable` |  |  |
| `data[].hotkey` | `object, nullable` |  |  |
| `data[].hotkey.hex` | `string` | Yes | The hex format of the hot key |
| `data[].hotkey.ss58` | `string` | Yes | The SS58 format of the hot key |
| `data[].id` | `string` | Yes |  |
| `data[].initiated_by` | `string, nullable` |  |  |
| `data[].listing_id` | `string` | Yes |  |
| `data[].lockup_duration` | `integer (int32), nullable` |  |  |
| `data[].netuid` | `integer (int32)` | Yes |  |
| `data[].price_offset_bps` | `integer (int32), nullable` |  |  |
| `data[].purchase_id` | `string, nullable` |  |  |
| `data[].seller` | `object` | Yes |  |
| `data[].seller.hex` | `string` | Yes | The hex format of the hot key |
| `data[].seller.ss58` | `string` | Yes | The SS58 format of the hot key |
| `data[].tao_amount` | `string, nullable` |  |  |
| `data[].timestamp` | `string (date-time)` | Yes |  |
| `data[].unlock_block` | `integer (int32), nullable` |  |  |
| `pagination` | `object` | Yes |  |
| `pagination.current_page` | `integer (int32)` | Yes |  |
| `pagination.next_page` | `integer (int32), nullable` |  |  |
| `pagination.per_page` | `integer (int32)` | Yes |  |
| `pagination.prev_page` | `integer (int32), nullable` |  |  |
| `pagination.total_items` | `integer (int32)` | Yes |  |
| `pagination.total_pages` | `integer (int32)` | Yes |  |

### Other responses

| Status | Meaning |
| --- | --- |
| `400` | Bad request |
| `500` | Internal server error |

Every request needs an `Authorization` header holding your API key — see [Getting started with the Taostats API](https://beta.taostats.io/docs/start-here/getting-started-with-taostats-api).