Published in


imToken Labs: Explaining the Maker DAI Bridge

An introduction to MakerDAO’s Optimism DAI Bridge

Photo by Wilbur Wong on Unsplash

Rollup Bridges

Fast Withdrawal (From L2 to L1)

The Usual Fast Withdrawal Process

The Maker DAI Bridge

Disadvantage of Maker’s approach

The Process Behind Maker’s Bridge


  • Currently, Maker only supports Optimistic Rollup (or more precisely, Optimism only), because most of the current ZK Rollups do not support L1 <-> L2 interaction (which, as mentioned, is a necessary feature). The dispute period of ZK Rollup is much shorter than that of Optimistic Rollup, therefore fast asset withdrawal will not be a much needed feature for ZK Rollup users.
  • The Maker Optimism DAI Bridge is still in production.
  • The same design can be used for other Optimistic Rollups, such as Arbitrum with modifications to Arbitrum’s Rollup Bridge.



Digital Assets Within Your Control

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store

Wallet for Ethereum ETH, Bitcoin BTC, Arbitrum, Optimism, zkSync, Aztec, Polkadot DOT, Kusama KSM, LTC, EOS, Tron TRX, Cosmos ATOM, BCH, Nervos and more