Blockchain Layers: Layer 1, 2, Parachain, Sidechain Differences
Layer 1 ($BTC, $ETH) forms blockchain’s core, handling data and consensus. Layer 2 (Lightning Network, Optimistic Rollups) improves speed and scalability. Layer 3 (Arbitrum Orbit) enhances customization. Parachains (Polkadot) and sidechains (Polygon) solve specific challenges. #Update #BlockchainTech
