Bridge (Cross-Chain)

A protocol that enables transferring assets or data between different blockchains. Bridges use mechanisms like lock-and-mint (lock on source, mint wrapped on destination), liquidity pools, or relay networks. Bridges are high-value attack targets—Wormhole ($320M, 2022), Ronin ($625M, 2022). Wormhole is Solana's primary bridge to Ethereum and other chains.