Bridges and Multichain

Web3 is increasingly multichain. Users hold assets on Ethereum, move activity to faster L2s, and explore apps across different ecosystems. Bridges are the tools that help assets and messages travel between those otherwise separate networks.

The most common bridge model does not teleport an asset. It locks the original on one chain and creates a corresponding representation on another. Moving back reverses the process.

This design is practical because chains do not natively share state. A bridge needs some way to prove that funds were locked before minting the mirrored asset elsewhere.

That proof can come from validators, multisigs, messaging protocols, or chain-specific bridge contracts. Different designs offer different trust assumptions, speed, and cost, which is why not all bridges feel equally safe.

For users, the lesson is simple: multichain access is convenient, but every bridge adds another trust surface. Use reputable routes, verify token contracts, and move carefully when significant value is involved.