> For the complete documentation index, see [llms.txt](https://en.wiki.zks.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://en.wiki.zks.org/interact-with-zkswap/definition.md).

# Definition

Here're some constants which may be used in the following APIs.

### Versions

* `v3`: the latest version of ZKSpace
* `v2`: the previous version of ZKSwap

### Networks (layer-1 chain ID)

* `1`: Ethereum mainnet
* `4`: Rinkeby testnet

### Chain IDs (layer-2 chain ID)

* 13: Ethereum mainnet for v3
* 11: Ethereum mainnet for v2
* 133: Rinkeby testnet for v3