Smart Contract Upgrade: Multichain & Bridging Features

Superstate Feb 27, 2025
Smart Contract Upgrade: Multichain & Bridging Features

The newest version of Superstate’s token smart contracts, SuperstateTokenV4, is live on Ethereum Mainnet. The upgrade prepares for USTB & USCC to be deployed on a multitude of new chains, and will be used for EVM deployments going forward.

The main change is the addition of the bridge function. The bridge function allows users to burn their tokens on the source chain, and receive the specified number of tokens on supported destination chains. This functionality makes it easy for DAOs, protocols, and on-chain investors to move their tokens cheaply and efficiently across chains.

Other notable updates in SuperstateTokenV4 include:

  1. The addition of the bridgeToBookEntry function, which allows users to burn their tokens and hold their shares in book-entry with Superstate off-chain

  2. The user version of the burn function has been renamed to offchainRedeem, which should be used to initiate a Standard Redemption

  3. The admin version of the burn function has been renamed to adminBurn

  4. ​​The public variable, redemptionContract, has been added to enable lookup of the corresponding redemption contract, if Protocol Redemptions are supported for that token

  5. The hasSufficientPermissions function has been renamed to isAllowed for improved clarity

  6. Encumber (ERC-7246) support has been removed

For more details on SuperstateTokenV4, including contract addresses and function specifications, refer to our technical documentation.

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