# Index Overview

The [Coin Metrics Bletchley Indexes](https://coinmetrics.io/cm-indexes/) (“CMBI”) are an independent, transparent, and comprehensive measure of cryptoasset market performance and network activity.

## Data Available for Indexes

The data types listed below are available for each index:

{% content-ref url="index/index-timeseries/index-levels" %}
[index-levels](https://gitbook-docs.coinmetrics.io/index-data/index/index-timeseries/index-levels)
{% endcontent-ref %}

{% content-ref url="index/index-timeseries/index-candles" %}
[index-candles](https://gitbook-docs.coinmetrics.io/index-data/index/index-timeseries/index-candles)
{% endcontent-ref %}

{% content-ref url="index/index-timeseries/index-constituents" %}
[index-constituents](https://gitbook-docs.coinmetrics.io/index-data/index/index-timeseries/index-constituents)
{% endcontent-ref %}

## **Index Coverage**

A full list of CMBI indexes can be found in our Coverage Tool:

{% embed url="<https://coverage.coinmetrics.io/indexes>" %}