Solana's October 2026 upgrade replaces on-chain vote transactions with direct validator-to-validator certificate bundling

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.