Bitlayer Bitcoin L2 with focus on BTC staking for yield, plus EVM smart contracts. Architecture - ZK rollup with state commitments to Bitcoin. - EVM compatibility for Solidity contracts. - BTC staking — bridged BTC earns yield via Bitlayer's protocols. - Federation peg (planned BitVM upgrade). Position Among the "BTCFi" Bitcoin L2s competing on yield products. TVL moderate (early 2026). Use cases - BTC staking for yield. - DeFi protocols (lending, AMMs). - Bridge integrations to Ethereum L2s. Limitations - Federation trust until BitVM bridge. - Yield sources sometimes unclear / require carefu…