> For the complete documentation index, see [llms.txt](https://docs.yarchain.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.yarchain.org/whitepaper/project-mechanics.md).

# Project mechanics

YAR is a modular infrastructure for cross-chain connectivity.

YAR consists of three main parts: YAR chain, YAR protocol, and YAR vault, which work together to provide a developer with a single standardized input/output point for all supported systems (Bitcoin, Ethereum, TRON, BSC, Solana, etc.).