Proof-Of-Capacity
MC2 users earn TFT via Liquid as monthly income for connecting Internet capacity to the Network via the ThreeFold Grid.
Proof-Of-Utilization
MC2 users buy TFT via Liquid to store data and run applications privately on a peer-to-peer Internet infrastructure.
TFT is just one form of the Liquid current-see in order to incentivize participants to operate the MC2 Network on the distributed Grid on behalf of Universes, flows, communities, apps, dApps, and users, similar how Holofuel is used to incentivize the same for Holochain hApps.