Yes, when you lock your CRV tokens in the Curve Finance protocol, you receive additional rewards in the form of the native token, CRV. This works by allowing users to lock their CRV tokens in a liquidity pool, and in return they receive rewards in the form of CRV tokens. The rewards are generated from the trading fees collected from users trading on the Curve platform. This incentivizes users to provide liquidity to the platform, as they will be rewarded with additional CRV tokens for doing so. Additionally, the amount of rewards received is proportional to the amount of CRV tokens locked in the liquidity pool.