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Ethereum is a blockchain platform designed to build decentralized applications (dApps) using smart contracts. Ether (ETH), its native cryptocurrency, is the second largest crypto by market cap. It’s used to pay for transaction fees (gas), run dApps, and execute smart contracts. Ether also plays a key role in decentralized finance (DeFi), staking, NFTs, and decentralized exchanges.
Ethereum 2.0 addresses scalability through proof-of-stake and sharding, which allow the network to process more transactions and reduce congestion. These improvements are expected to make Ethereum faster and more efficient.
A DeFi aggregator is a tool that consolidates multiple DeFi protocols into one interface. Aggregators like 1inch and Zapper allow users to compare rates and find the best DeFi services, simplifying the user experience on Ethereum.
Proof-of-Authority is a consensus model used on Ethereum testnets, where validators are pre-selected. PoA is faster and more efficient than PoW or PoS, making it ideal for testing environments but less decentralized.
Sidechains are independent blockchains connected to Ethereum that process transactions off the main chain. They help reduce congestion and fees by allowing users to conduct transactions outside of Ethereum, later settling on the main chain.
Tokens are listed on Ethereum by deploying a smart contract that defines the token’s properties. Listing on decentralized exchanges like Uniswap can be immediate, allowing tokens to be traded freely within the Ethereum ecosystem.