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Security advisory: The permissionless WAB deployment configures its own DVN set at deploy time. Child bridges may have varying security assumptions. Before bridging significant value through a WAB child, users should verify the DVN configuration via endpoint.getConfig(childAddress, sendLibrary, destinationEid, 2). Configurations with fewer than 2 required DVN attestations should be treated as single-point-of-failure risk.
Use this guide when you want to bridge an existing ERC20 from another chain (e.g. Sepolia) to Berachain using LayerZero V2 and the OFT (Omnichain Fungible Token) standard.

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Repository

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Official documentation

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Requirements

  • Node v20.11.0 or greater, npm
  • Wallet with Berachain testnet $BERA — Bepolia Faucet
  • Wallet with Sepolia $UNI (or other source token) — see README for faucet/Uniswap
  • Foundry

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Stack

Solidity, Foundry (Forge scripts), Node.js, LayerZero V2 OFT.

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Quick start

  1. Clone and install
  2. Create .env with PRIVATE_KEY, SEPOLIA_ADAPTER_ADDRESS, BERACHAIN_OFT_ADDRESS (fill addresses after deploying).
  3. Deploy adapter on Sepolia
    Set SEPOLIA_ADAPTER_ADDRESS in .env.
  4. Deploy OFT on Berachain
    Set BERACHAIN_OFT_ADDRESS in .env.
  5. Bridge tokens

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Key files