$ETH

*Ethereum 2.0 (The Merge)**: Ethereum completed its transition from Proof of Work (PoW) to Proof of Stake (PoS) in 2022, significantly reducing energy consumption and improving scalability.

2. **Layer 2 Solutions**: Ethereum continues to see growth in Layer 2 scaling solutions like **Arbitrum**, **Optimism**, and **zkSync**, which help reduce transaction fees and improve network efficiency.

3. **EIP-4844 (Proto-Danksharding)**: This upgrade introduced "blob transactions" to improve scalability and reduce costs for Layer 2 rollups.