It ran a Praos-like consensus protocol. Later, Jörmungandr was used as a sidechain to power Project Catalyst voting. Named after the sea serpent from Norse mythology.
Explore next
- OuroborosThe family of proof-of-stake consensus protocols that power Cardano, designed with formal security proofs against the known attack catalogue against PoS chains. Mainnet runs Ouroboros Praos today.View term
- Project CatalystCardano's community grant program, launched in 2020 to fund ecosystem projects from the treasury and stewarded by the Cardano Foundation since 2026.View term