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

# What is zkopru?

Zkopru is a layer-2 scaling solution for private transactions using zk-SNARK and optimistic rollup. It supports private transfer and private atomic swap within the layer-2 network between ETH, ERC20, ERC721 at a low cost. Also, with the pay-in-advance feature, users can withdraw assets from the layer-2 before the finalization.

![zkopru-banner](/files/-MBKsdVU_eDh-aR8THEP)