By the end of this lesson you’ll be able to move money to and from a layer 2 without landing on a fake bridge or a fake token, and you’ll know what a Safe address on one chain is worth on another, and what an ETHBEAT stage tells you about who can take your funds.
What a bridge is, for a holder
Ethereum Unlocked, lesson 6, explains how a layer 2 works and How DeFi Works, lesson 5, explains the three kinds of bridge and what sits on the far side of each. This lesson is about not losing money in the crossing.
One sentence from ethereum.org’s own guide carries the risk: with a bridge run by a company or a group, “users have to rely on the security of the bridge,” and a bridge keeps a great deal of money in one contract.
Ronin
Stolen keys
Wormhole
A flaw in code
Nomad
An upgrade
Three bridges, three causes
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