> For the complete documentation index, see [llms.txt](https://gitbook-docs.coinmetrics.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gitbook-docs.coinmetrics.io/network-data/network-data-overview/kri/block-size.md).

# Block Size

## Contents

* [Block Size (block\_size)](#block_size)

## Block Size <a href="#block_size" id="block_size"></a>

**Definition**

A block's size in bytes

**Dictionary**

| Name       | MetricID    | Unit  | Interval |
| ---------- | ----------- | ----- | -------- |
| Block Size | block\_size | bytes | 1b       |

**Methodology**

The most recent block is evaluated and the total size of that block is computed in bytes.

**Available Assets**

Bitcoin (BTC), Ethereum (ETH)

## API Endpoints

Block Size metrics can be accessed using these endpoints:

* `timeseries/asset-metrics`

and by passing in the metric ID's `block_size*` in the `metrics` parameter.

{% openapi src="/files/kc3C7O6zTLYNBA0AcsZt" path="/timeseries/asset-metrics" method="get" %}
[openapi.yaml](https://2398817338-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MO23j33wWGzm0NrZseN%2Fuploads%2Fgit-blob-a236d0d04b3b155748ce07a17aca8108fce9b7c2%2Fopenapi.yaml?alt=media)
{% endopenapi %}

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

```shell
curl --compressed "https://api.coinmetrics.io/v4/timeseries/asset-metrics?metrics=block_size&assets=btc&frequency=1b&pretty=true&api_key=<your_key>"
```

{% endtab %}

{% tab title="Python" %}

```python
import requests
response = requests.get('https://api.coinmetrics.io/v4/timeseries/asset-metrics?metrics=block_size&assets=btc&frequency=1b&pretty=true&api_key=<your_key>').json()
print(response)
```

{% endtab %}

{% tab title="Python Client" %}

```python
from coinmetrics.api_client import CoinMetricsClient

api_key = "<API_KEY>"
client = CoinMetricsClient(api_key)

print(
    client.get_asset_metrics(
        metrics="block_size", 
        assets="btc",
    ).to_dataframe()
)
```

{% endtab %}
{% endtabs %}


---

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