As of now, all Relic provers can be used without fees. In the future, the fee switch may be enabled, so we encourage applications building on Relic to account for this. See our example apps for the best practices.

Why is there a fee switch?

In order to efficiently verify historical data, Relic Protocol requires regular (~daily) on-chain maintenance. Although the maintenance is permissionless, there is currently no incentivization mechanism, so the maintenance costs are currently subsizidized by the Relic core development team.

In the future, Relic can be decentralized and a maintenance incentive mechanism (funded via protocol revenue) can be implemented.