> For the complete documentation index, see [llms.txt](https://gum-ball.gitbook.io/gumball-protocol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gum-ball.gitbook.io/gumball-protocol/core-concepts/gumbar.md).

# GumBar Staking

Users have the option to stake their Collection Keys or gNFTs to earn a portion of the swap fees generated from a specific collection. GBT or gNFT is staked in the GumBar contract. Users can unstake or claim their rewards at any time. Yield is paid in the form of base asset and GBT, for example ETH and GBT. This is real yield that comes from swap and redemption fees on a collections respective bonding curve and Gumball Machine.