This milestone will deliver the functionally complete Hermes runtime and run the Athena Application, which will consist of the first Athena Module. The first Athena module will track Catalyst voter registrations from transaction events detected on the Cardano blockchain and save that data in a local database. A second Hermes module will calculate registered voters' historical stake address balance. Together, these modules form a decentralized and permissionless data source for registered voters and their voting power and replace the current Voting power snapshot tools.

https://milestones.projectcatalyst.io/projects/1000095/milestones/4