# Bitnomial

Bitnomial exchange historical data for **all its instruments** is available since **2023-01-13**.

{% embed url="<https://api.tardis.dev/v1/exchanges/bitnomial>" %}
See Bitnomial exchange historical data coverage: available symbols, channels, date ranges and incidents
{% endembed %}

### Downloadable **CSV** files

Historical CSV datasets for the first day of each month are **available to download without API key**. See [downloadable CSV files documentation](https://docs.tardis.dev/downloadable-csv-files/overview).

| data type             | symbol | date       |                                                                                                          |
| --------------------- | ------ | ---------- | -------------------------------------------------------------------------------------------------------- |
| incremental\_book\_L2 | BUIH23 | 2023-03-01 | [Download sample](https://datasets.tardis.dev/v1/bitnomial/incremental_book_L2/2023/03/01/BUIH23.csv.gz) |
| trades                | BUIH23 | 2023-02-01 | [Download sample](https://datasets.tardis.dev/v1/bitnomial/trades/2023/02/01/BUIH23.csv.gz)              |
| quotes                | BUIH23 | 2023-03-01 | [Download sample](https://datasets.tardis.dev/v1/bitnomial/quotes/2023/03/01/BUIH23.csv.gz)              |

### API Access and data format

Historical data format is the same as provided by real-time Bitnomial WebSocket **Market Data API** with addition of local timestamps. If you'd like to work with **normalized data format** instead (same format for each exchange) see [downloadable CSV files](https://docs.tardis.dev/downloadable-csv-files/overview) or official [client libs](https://docs.tardis.dev/api/quickstart) that can perform data normalization client-side.

{% tabs %}
{% tab title="Python" %}

```python
# pip install tardis-dev
import asyncio
from tardis_dev import Channel, replay

async def main():
    async for local_timestamp, message in replay(
        exchange="bitnomial",
        from_date="2023-05-01",
        to_date="2023-05-02",
        filters=[Channel(name="book", symbols=[])],
        api_key="YOUR_API_KEY",
    ):
        # messages as provided by Bitnomial exchange real-time stream
        print(message)

asyncio.run(main())
```

See [Python client docs](https://docs.tardis.dev/python-client/quickstart).
{% endtab %}

{% tab title="Node.js" %}

```javascript
// npm install tardis-dev
import { replay } from 'tardis-dev';

const messages = replay({
  exchange: 'bitnomial',
  from: '2023-05-01',
  to: '2023-05-02',
  filters: [{ channel: 'book', symbols: [] }],
  apiKey: 'YOUR_API_KEY'
});

// messages as provided by Bitnomial exchange real-time stream
for await (const { localTimestamp, message } of messages) {
  console.log(localTimestamp, message);
}
```

See [Node.js client docs](https://docs.tardis.dev/node-client/quickstart).
{% endtab %}

{% tab title="cURL & HTTP API" %}

```bash
curl --compressed -g 'https://api.tardis.dev/v1/data-feeds/bitnomial?from=2023-05-01&filters=[{"channel":"book","symbols":[]}]&offset=1000'
```

{% embed url="<https://api.tardis.dev/v1/data-feeds/bitnomial?from=2023-05-01&filters=[{%22channel%22:%22book%22,%22symbols%22:[]}]&offset=1000>" %}
Example API response for Bitnomial exchange historical market data request
{% endembed %}

See [HTTP API docs](https://docs.tardis.dev/api/http-api-reference).
{% endtab %}

{% tab title="cURL & tardis-machine" %}

```bash
curl -g 'localhost:8000/replay?options={"exchange":"bitnomial","filters":[{"channel":"book","symbols":[]}],"from":"2023-05-01","to":"2023-05-02"}'
```

[Tardis-machine](https://docs.tardis.dev/tardis-machine/quickstart) is a locally runnable server that exposes API allowing efficiently requesting historical market data for whole time periods in contrast to [HTTP API](https://docs.tardis.dev/api/http-api-reference) that provides data only in minute by minute slices.

See [tardis-machine](https://docs.tardis.dev/tardis-machine/quickstart) docs.
{% endtab %}
{% endtabs %}

### Captured real-time channels

{% embed url="<https://bitnomial.com/exchange/docs/api/websocket/overview/>" %}
See Bitnomial WebSocket API docs providing documentation for each captured channel's format
{% endembed %}

{% hint style="info" %}
Click any channel below to see [HTTP API](https://docs.tardis.dev/api/http-api-reference#data-feeds-exchange) response with historical data recorded for it.
{% endhint %}

* [trade](https://api.tardis.dev/v1/data-feeds/bitnomial?from=2023-05-01\&filters=\[{%22channel%22:%22trade%22}]\&offset=1000) Trade executions stream
* [level](https://api.tardis.dev/v1/data-feeds/bitnomial?from=2023-05-01\&filters=\[{%22channel%22:%22level%22}]\&offset=1000) Price level order book updates stream
* [book](https://api.tardis.dev/v1/data-feeds/bitnomial?from=2023-05-01\&filters=\[{%22channel%22:%22book%22}]\&offset=1000) — available since **2023-04-07** Order book snapshots stream
* [block](https://api.tardis.dev/v1/data-feeds/bitnomial?from=2023-05-01\&filters=\[{%22channel%22:%22block%22}]\&offset=1000) Block trade updates stream
* [status](https://api.tardis.dev/v1/data-feeds/bitnomial?from=2023-05-01\&filters=\[{%22channel%22:%22status%22}]\&offset=1000) Market status and trading state updates stream

### Market data collection details

[Market data collection infrastructure](https://docs.tardis.dev/faq/general#what-is-your-infrastructure-setup) for Bitnomial exchange is located in GCP europe-west2 region (London, UK).

Real-time market data is captured via **multiple WebSocket connections** to `wss://bitnomial.com/exchange/ws`.

{% hint style="info" %}
Bitnomial servers are located in AWS us-east-2 region (US East, Ohio, USA).
{% endhint %}