# Bridge

> A tool that lets you move tokens from one blockchain to another.

Canonical URL: https://fudfomo.co/glossary/bridge
Source: What The Block! Dictionary v1.0 (last updated 2026-04-25), browsable at https://wtb.fudfomo.co.

## Definition

A bridge connects two blockchains so you can move value between them. You usually lock the original token on one side, and a matching token is released on the other side.

Bridges have historically been one of the riskiest parts of crypto. Many of the largest hacks have targeted bridges, so it pays to use well-known ones and to move smaller amounts when trying a new chain.

## Related terms

- [Layer 2](https://fudfomo.co/glossary/layer-2): A faster, cheaper network built on top of a layer 1 like Ethereum. Borrows the main chain's security.
- [Sidechain](https://fudfomo.co/glossary/sidechain): A separate blockchain that runs alongside a main chain and is connected by a bridge.
- [Wrapped Token](https://fudfomo.co/glossary/wrapped-token): A token on one blockchain that represents a coin from another. Lets you use Bitcoin on Ethereum, for example.

## See the full catalogue

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