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What Is LayerZero?
LayerZero is an omnichain interoperability protocol designed for lightweight message passing across chains. LayerZero provides authentic and guaranteed message delivery with configurable trustlessness. It is a “blockchain of blockchains” that allows other blockchain networks to communicate directly and in a trustless manner.
LayerZero’s key feature is Ultra Light Nodes (ULNs). These smart contracts run on each blockchain and act as endpoints for cross-chain communication. ULNs verify the validity of transactions and messages from other chains using block headers and transaction proofs, ensuring security and efficiency.
LayerZero supports any blockchain that can run smart contracts, such as Ethereum, BNB Chain, Avalanche, Polygon, Arbitrum, Optimism, Fantom and other chains. LayerZero also supports non-EVM chains like Aptos. These so-called omnichain applications should become a key layer of a multi-chain future, where different blockchains interact simultaneously.