> For the complete documentation index, see [llms.txt](https://docs.phron.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.phron.ai/developers/copy/core-concepts/blockchain-fundamentals.md).

# Blockchain Fundamentals

- [Overview of Phron.ai’s consensus mechanism (AI-backed PoS, DAG)](https://docs.phron.ai/developers/copy/core-concepts/blockchain-fundamentals/overview-of-phron.ais-consensus-mechanism-ai-backed-pos-dag.md)
- [Validator roles and node requirements](https://docs.phron.ai/developers/copy/core-concepts/blockchain-fundamentals/validator-roles-and-node-requirements.md)