Proof of Work (PoW) is the original blockchain consensus mechanism, made famous by Bitcoin. Miners compete to solve computationally expensive puzzles to validate transactions and add blocks to the chain. The difficulty automatically adjusts to maintain consistent block times.
Cardano is a proof-of-stake blockchain platform built on peer-reviewed academic research. Founded by Ethereum co-founder Charles Hoskinson, it takes a methodical, research-first approach to development. Its Ouroboros consensus mechanism was the first provably secure PoS protocol.
Solana is a high-performance Layer 1 blockchain capable of processing up to 65,000 transactions per second using a novel Proof of History consensus mechanism. It has become a major hub for DeFi, NFTs, and consumer crypto applications.
Avalanche is a smart contract platform that achieves high throughput through a novel Avalanche consensus mechanism. It supports custom blockchains called Subnets, making it attractive for enterprise and gaming. Its C-Chain is EVM-compatible, allowing Ethereum dApps to deploy easily.
Proof of Stake (PoS) is a blockchain consensus mechanism where validators are selected to create new blocks based on the amount of cryptocurrency they stake as collateral, rather than through energy-intensive computation. It is significantly more energy-efficient than Proof of Work.