They describe their system as “an aggregated signature gossip protocol.” New blocks are proposed and finalized by a small number of “validator nodes” run by corporate partners, such as Google, Samsung, Binance and others. THETA’s creators say these nodes provide security equivalent to that of well-known PoS networks like Solana. Another layer of security comes from a second layer of nodes called “guardian nodes,” which seal blocks. There are thousands of these nodes, operated by THETA community members.
