The blockchain world is increasingly presenting a multi-chain parallel landscape. Hundreds of blockchains, Layer 2 networks, and application chains operate independently, each with its own assets, communities, and advantages. However, blockchains are inherently unable to communicate with each other, leading to serious fragmentation of value and liquidity.
Cross-Chain Bridges are the key infrastructure born to solve this problem. They function like bridges in the real world, connecting isolated "blockchain islands" and allowing users to seamlessly transfer assets, data, and even execute complex smart contract interactions across different networks.
By 2026, cross-chain bridges will have become essential tools for exploring diverse ecosystems such as DeFi, NFTs, and blockchain games. This article will delve into the core principles of cross-chain bridges, mainstream protocols, security risks, and provide practical guides for secure cross-chain operations.
01 Cross-Chain Core: