# Introduction

The Pendulum blockchain is based on the [Substrate](https://substrate.io/) framework and runs on three different networks:

* **Pendulum: Polkadot parachain.** \
  The "mainnet".&#x20;
* **Amplitude: Kusama parachain.** \
  The "canary" network. Tokens have real value, but network is more dynamic and experimental than Pendulum.&#x20;
* **Foucoco: Rococo parachain.** \
  The testnet. Tokens have no real value and network may arbitrarily reset.

## Further information

You can find further information on [Pendulum](https://parachains.info/details/pendulum/) and [Amplitude](https://parachains.info/details/amplitude/) on [parachains.info](https://parachains.info/)

## How to contribute to the docs[​](https://developers.stellar.org/docs#contribute-to-the-docs)

Contributions to the docs are encouraged. You can file a pull request to add new content, suggest revisions to existing content using the edit icon at the top of each page, or submit suggestions, requests, and bug reports as issues in the [Pendulum Docs repository on Github](https://github.com/pendulum-chain/pendulum-docs).&#x20;