B² Network (BSquared) Bitcoin L2 with EVM compatibility, ZK proof rollup combined with optimistic challenge mechanism. Deployed 2024, growing 2025-2026. Architecture - EVM execution (Solidity contracts). - ZK proofs for state validity. - Optimistic challenges as backup verification. - Bridge : federation + planned BitVM upgrade. - Native token : B²BTC (peg-style) + B² (governance/utility). Use cases - DeFi : yield protocols, lending, AMMs. - Bitcoin staking-like products : bridged BTC earns yield in B² ecosystem. - NFTs / Asset issuance . Position One of multiple "Bitcoin L2" projects competi…