This comprehensive guide explores top Layer 1 blockchain coins for 2024, comparing major networks like Ethereum, Bitcoin, Solana, Cardano, Avalanche, and Sui. It examines how Layer 1 solutions enhance scalability through protocol-level improvements including consensus upgrades, sharding, and block parameter adjustments. The article analyzes the blockchain trilemma's trade-offs between security, decentralization, and scalability, then contrasts Layer 1 with Layer 2 and Layer 3 solutions. Readers learn key advantages of Layer 1's native protocol enhancements and unified ecosystem benefits, alongside its scalability limitations. Detailed comparisons reveal how Layer 2 solutions like rollups and sidechains complement Layer 1, while the FAQ addresses practical questions about transaction costs, security, and optimal use cases. Perfect for investors and developers seeking to understand modern blockchain architecture and scalability strategies.