> For the complete documentation index, see [llms.txt](https://docs.kaisar.io/kaisar-network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.kaisar.io/kaisar-network/origins/faq/what-is-proof-of-physical-work-popw.md).

# What is Proof of Physical Work (PoPW)?

Proof of Physical Work (PoPW) is a token distribution mechanism used by Kaisar to reward GPU providers for completing verifiable physical work in the real world. It involves validating the performance, uptime, and device info of GPU providers through checkers, with rewards distributed based on these scores.