The League of Entropy is providing free, verifiable, public randomness as a public good for anybody on the internet to use. Filecoin Storage Providers are relying on that verifiable randomness to perform leader election, meaning for each Filecoin block, all the SPs in the network are querying the public randomness produced by the League of Entropy.
The open source project `drand` is the software that the League of Entropy relies on to provide that public good service.
We also provide HTTP relays to provide HTTP endpoints for users to rely on to access drand randomness, as well as gossipsub relays as a fallback mechanism, both of which are used in all Filecoin implementations to perform leader election.
Providing decentralized, low latency, high SLA access to random beacons every 3 seconds across the world is a costly endeavour and doing it as a public good requires significant funding throughout the year.