Solana scheduled an upgrade to replace the network's legacy Tower BFT consensus mechanism on Wednesday, October 21, 2026

Base blockchains that settle transactions on their own network, such as Ethereum, Solana, and Avalanche, competing on security, throughput, decentralization, and developer ecosystems.

Rules by which distributed networks agree on a shared ledger, from proof of work mining to proof of stake validation, trading off security, energy use, and decentralization.