# What is a bridge? Moving tokens between chains, and the risk it adds

> Canonical: https://blazephoenix.xyz/learn/what-is-a-bridge
> License: CC BY 4.0 (attribution + link) · © 2026 BlazePhoenix
> Updated: 2026-08-05



A bridge lets a token on one chain appear on another. The usual design locks the asset in a contract on chain A and mints a representation on chain B; to come back, you burn the representation and unlock the original. The catch is that the lock contract holds real value for everyone at once, which is why bridges have been among the largest single points of loss in the space.

## The cheapest bridge is often no bridge

If the token you want already trades on the chain you are on, you do not need to bridge at all. BlazePhoenix aggregates liquidity natively on Base, Ethereum, Optimism, Arbitrum and Robinhood Chain, so you swap where you stand and never expose funds to a cross-chain lock. When you do bridge, prefer canonical bridges and verify the destination contract before signing.

**Verify it yourself:** Before bridging, look up the destination token on a block explorer and confirm it is the canonical wrapper, not a look-alike with a different deployer

Related: https://blazephoenix.xyz/learn/what-is-layer-2 · https://blazephoenix.xyz/learn/cheapest-chain-to-swap · https://blazephoenix.xyz/learn/custody-explained