Data Consume Volume (DCV) is a metric placed to represent the total $ amount spent on purchases of data assets, fees on executing transactions, sharing data, and more. So, the more data consumed, the more rewards are distributed.
Data Farming rewards OCEAN to liquidity providers (stakers) in two different ways: active and passive rewards. The two reward functions produce variable APYs, contingent user criteria and chosen eligiblity, plus data consume volume (DCV). 
How Data farming differentiates from yield farming is that Data Farming incentivizes a sustainable supply of polished and high-demand data assets into the protocol. 
Unlike yield farming in DeFi, data farming has real intrinsic utility for all stakeholders: Liquidity providers (LPs) earn additional tokens, the protocol receives sustainable liquidity, and the users can trust the protocol's secured data assets. It's a win-win situation for all parties involved.
DF’s aim is to achieve a minimum supply of data for network effects to kick in, and once the network flywheel is spinning, to increase growth rate.
Data assets for DF may be published in any [network where Ocean’s deployed in production](../core-concepts/networks.md): Ethereum Mainnet, Polygon, etc.
Yield rewards are distributed weekly, every Thursday. Users can choose to claim every week, or wait many weeks to accumulate before claiming. (It’s all on-chain.)
This behavior is inherited from [veCRV](https://curve.readthedocs.io/dao-fees.html); [here’s the code](https://github.com/oceanprotocol/contracts/blob/main/contracts/ve/veFeeDistributor.vy#L240-L256).
[DF Main](https://blog.oceanprotocol.com/ocean-data-farming-main-is-here-49c99602419e) started Mar 16, 2023 in DF Round 29. DF29 has 150K OCEAN rewards available (a 2x increase from DF28). As DF Main progresses, rewards will increase to 300K (another 2x), then 600K (another 2x), then beyond 1.1M OCEAN/week (near 2x) then decaying over time.
**Since rewards are distributed across the Top 100 assets, all participants (Publishers & Curators) are now incentivized to support a broader range of assets rather than optimizing on a single asset.**
You can read more about the implementation [in this blog post](https://blog.oceanprotocol.com/data-farming-df22-completed-df23-started-reward-function-tuned-ffd4359657ee) and find the full study [in these slides](https://docs.google.com/presentation/d/1HIA2zV8NUPpCELmi2WFwnAbHmFFrcXjNQiCpEqJ2Jdg/).