Running the very core of SKL network, SKALE BFT consensus is universal, modern, modular, high-performance, asynchronous, provably-secure, agent-based Proof-of-Stake blockchain consensus engine in C++ 17. Includes provably secure embedded Oracle. Used by SKALE elastic blockchains. Easy and flexible enough to implement your own blockchain or smart contract platform. BLS signatures and Binary Asynchronous Consensus are main building blocks.