Some are reasonably safe; others have lost hundreds of millions. Native L2 bridges (Arbitrum, Optimism, Base) inherit the security of Ethereum and are the safest option. Burn-and-mint bridges like Circle's CCTP eliminate the locked-collateral honeypot. General-purpose lock-and-mint bridges are the highest risk class.

Why is bridging sometimes so expensive?

Bridge fees include source-chain gas, destination-chain gas, and the bridge's own fee (often a percentage). On Ethereum mainnet, gas alone can cost $5–$50 per side. For small transfers, the fee can be a meaningful percentage; aggregators help by routing through cheaper paths.

What is a wrapped token?

A token that represents a different asset locked elsewhere — WBTC is Bitcoin locked in a custodian's vault, with wrapped Bitcoin tokens issued on Ethereum. The wrapped token's value depends entirely on the lock being honored. A drained or rugged custodian collapses the wrapped token regardless of the underlying asset's price.

What happens if I bridge to the wrong address?

Most often, the funds arrive at that address on the destination chain — and you've sent them to someone else's account or to an address you don't control on that chain. If the address is yours on a different chain, recovery may be possible by importing the same seed phrase into a wallet on the destination chain.

How long do bridge transfers take?

Seconds for fast L2 bridges like Across. Minutes for most LayerZero-based bridges. Up to 7 days for native withdrawals from optimistic rollups (Arbitrum, Optimism, Base) — that's the protocol-level dispute window. Native ZK rollup withdrawals are faster (hours).

Is bridging a taxable event?

Likely yes in most jurisdictions, although the rules are unsettled. Conservative interpretation: a bridge that burns and mints is a disposal of the source token and acquisition of a new one. Track every bridge transaction with full cost basis data — your tax software almost certainly defaults to treating it as a disposal.

How to Bridge Tokens Safely | Crypto Market Watch

Learn how cross-chain bridges work and how to use them safely. Compare lock-and-mint, burn-and-mint, and liquidity bridges. Avoid the most common ways funds get stuck or stolen.

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