> For the complete documentation index, see [llms.txt](https://gitbook.bcd.energy/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gitbook.bcd.energy/introduction.md).

# Introduction

* BCD is a movement, a green energy movement to save the living environment of the planet. 
* BCD Protocol is the social and economic model supported by blockchain that enables this social movement.