> For the complete documentation index, see [llms.txt](https://docs.blockhorizon.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blockhorizon.io/chart-tutorials/blockchain-fundamentals.md).

# Blockchain Fundamentals

- [Block Height](https://docs.blockhorizon.io/chart-tutorials/blockchain-fundamentals/block-height.md)
- [Blocks Mined](https://docs.blockhorizon.io/chart-tutorials/blockchain-fundamentals/blocks-mined.md)
- [Days Until Halving](https://docs.blockhorizon.io/chart-tutorials/blockchain-fundamentals/days-until-halving.md)
- [Difficulty Indicator](https://docs.blockhorizon.io/chart-tutorials/blockchain-fundamentals/difficulty-indicator.md)