> For the complete documentation index, see [llms.txt](https://earn.blink.sv/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://earn.blink.sv/chapter-101-bitcoin-what-is-it.md).

# Chapter 101 - Bitcoin: What is it?

## Bitcoin: What is it?