Ethereum

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Arbitrum is a unified blockchain platform for building and deploying applications, leveraging Optimistic Rollups to scale Ethereum with faster execution, optimized block times, and efficient data storage. It supports bridging assets via its official bridge, exploring over 900 ecosystem apps like Robinhood, GMX, and Magic Eden, and launching custom interconnected chains through Orbit. With 1.45 million active wallets, $19.21 billion in total value locked, and a 37.1% L2 market share, it emphasizes developer tools, governance participation, and community contributions to advance Ethereum's scalability.

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Uniswap App (app.uniswap.org) is the web interface to Uniswap"the leading decentralized exchange (DEX) on Ethereum and other blockchains. It uses an automated market maker (AMM) system powered by smart contracts, enabling users to swap tokens, provide liquidity, and explore pools directly from their wallets"all without intermediaries or accounts. The platform supports multiple chains and features like real-time token insights, on-chain limit orders (via advanced versions), and cross-chain accessibility.

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Compound Finance is a decentralized lending protocol on Ethereum, enabling users to supply assets to earn interest or borrow against collateral with variable rates. It supports major cryptocurrencies like ETH, USDC, and WBTC, using algorithmic interest based on supply-demand dynamics. Governance occurs via COMP token holders proposing and voting on upgrades, with multi-chain expansions to networks like Polygon and Avalanche for broader accessibility.

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MetaMask is a premier non-custodial cryptocurrency wallet and browser extension, supporting Ethereum and EVM-compatible blockchains. It allows users to store, swap, and manage thousands of tokens and NFTs, access decentralized applications (dApps), and perform cross-chain bridging. Serving over 100 million users, it features a user-friendly interface, hardware wallet integration, and robust security through local key storage. Available on Chrome, Firefox, iOS, and Android.

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Lido is a non-custodial liquid staking protocol that lets users stake crypto (notably Ethereum) in any amount and receive tokenized derivatives (e.g. stETH) in return. These derivatives accrue staking rewards while remaining liquid " users can trade, lend, or use them in DeFi without waiting for an unbonding period. Lido operates via a network of vetted node operators and is governed by the Lido DAO, distributing decision-making power among LDO token holders.

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Polygon Technology provides a layer-2 scaling framework for Ethereum, enhancing transaction speed and cost-efficiency while preserving security. It offers tools like the Polygon PoS chain, zkEVM for zero-knowledge rollups, and Miden for privacy-focused solutions, supporting developers in building dApps for DeFi, NFTs, and gaming. With a robust ecosystem, seamless asset bridging, and EVM compatibility, Polygon drives Web3 adoption through scalable, interoperable blockchain infrastructure.

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Rocket Pool is a decentralized Ethereum staking protocol that allows users to stake ETH with as little as 0.01 ETH or run a node with just 8 ETH, significantly lower than Ethereum's standard 32 ETH requirement. Launched in 2021, it uses a network of permissionless node operators to provide trustless staking services. Users receive rETH, a liquid staking token that accrues staking rewards over time. The protocol prioritizes decentralization with a diverse set of independent node operators running on various hardware and infrastructure providers. RPL serves as the protocol's governance and node operator insurance token.

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Across Protocol is a cross-chain bridge optimized for speed and capital efficiency, enabling fast asset transfers between Ethereum and its Layer 2 networks including Arbitrum, Optimism, Base, Polygon, zkSync, and Linea. Across uses an intent-based architecture where relayers compete to fill user bridge orders, providing near-instant transfers rather than requiring users to wait for standard bridge finality periods. The protocol is secured by UMA's optimistic oracle for settlement verification. Across is known for having some of the lowest bridge fees and fastest transfer times in the ecosystem, making it popular among users who frequently move assets between Ethereum L2s.

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EigenLayer is a restaking protocol on Ethereum that allows users to restake their staked ETH or liquid staking tokens to provide security to additional protocols and services called Actively Validated Services (AVS). This extends Ethereum's cryptoeconomic security to external systems without requiring them to bootstrap their own validator sets. Launched in 2023, EigenLayer introduced the concept of restaking to the blockchain industry and has attracted significant capital. The protocol enables new applications like data availability layers, oracle networks, and bridges to leverage Ethereum's security model through shared security.

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Starknet is an Ethereum Layer 2 scaling network developed by StarkWare that uses STARK (Scalable Transparent ARgument of Knowledge) validity proofs to achieve massive transaction throughput. Unlike EVM-compatible rollups, Starknet uses its own virtual machine (Cairo VM) and the Cairo programming language, offering computational advantages for complex operations. The network supports account abstraction natively, enabling advanced wallet features and flexible transaction signing. Starknet has attracted a significant developer ecosystem building DeFi protocols, gaming applications, and infrastructure tools, with a focus on enabling applications that would be prohibitively expensive on Ethereum mainnet.