Generation 1, 2, 3 Blockchain
Also known as: G1/G2/G3 Blockchain
Classification of blockchain evolution—from basic digital currency to scalable, interoperable platforms.
Blockchain is often categorized into three generations: Generation 1 (e.g., Bitcoin) focuses on digital currency and peer-to-peer transactions; Generation 2 (e.g., Ethereum) enables programmable smart contracts and dApps; Generation 3 (e.g., Polkadot, Cosmos) targets scalability, interoperability, and governance. Generation 3 introduces advanced consensus, sharding, cross‑chain communication, and sustainable decentralization. Understanding these generations helps developers and users assess protocol capabilities and ecosystems.