Solana's mainnet has officially transitioned to the Alpenglow consensus mechanism. Onchain data confirms that the legacy TowerBFT engine produced its final block at approximately 13:54 UTC on Wednesday, with Anza completing the switch less than a minute later. This migration marks a significant infrastructure upgrade for the Solana network, replacing the previous consensus model with Alpenglow to enhance performance and reliability. The rapid cutover demonstrates the network's capability to execute complex protocol changes with minimal downtime.