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Beamer Bridge V2 logoBeamer Bridge V2

Beamer Bridge is an optimistic rollup-to-rollup bridge that enables direct ERC-20 asset transfers between any two EVM compatible rollups, without transitioning to L1.
The bridge is currently paused.
  • Total value locked
    $0.000.00%
  • Destination
    Various
  • Validated by
    Optimistically
  • Type
    Liquidity Network
  • ...

    Detailed description

    Beamer Bridge is an optimistic rollup-to-rollup bridge that enables direct ERC-20 asset transfers between any two EVM compatible rollups, without transitioning to L1.

    It uses actors called Agents to fulfill user transfer requests on the destination chain. Users lock their assets on the source chain, and Agents provide the assets on the destination chain. Agents later receive the locked capital on the source chain by proving that they actually provided the assets on the destination chain. There is no liquidity pool, every agent participates in the cross-chain transfer by providing their own capital. Claims can ultimately be challenged on L1 using the rollups canonical bridges.

    Risk summary
    The bridge is currently paused.
    Technology

    Principle of operation

    The user initiates transaction to contract on Rollup 1, locking fees and assets. An Agent sends assets to user on Rollup 2. At this stage, the user is done and receives their assets on target rollup. The agent initiates the claim on the rollup, and if no one challenges the claim, the agent can withdraw the assets after 24h.

    1. Beamer Bridge V2 Architecture

    Optimistic validation with fallback to canonical bridge

    Claims are considered valid if no challenge is submitted within the claim period (24h). The dispute can either be resolved by the participants using an auction system or escalated by making use of the canonical bridge.

    • Funds can be stolen if an agent claim is left unchallenged for 24 hours or the L1 dispute resolution is not triggered.

    1. Beamer Bridge V2 Architecture

    Destination tokens

    Only tokens that have been bridged using native chain bridges are supported.

    Permissions

    The system uses the following set of permissioned addresses:

    Can invoke admin functions on the contracts such as adding new tokens, whitelisting agents or pausing the contracts.

    Liquidity Providers 0xdC25…b768

    Addresses allowed to fill requests.

    Smart contracts

    The system consists of the following smart contracts on the host chain (Ethereum):

    Resolver 0xCb60…61AD

    This contract resides on the L1 chain and is tasked with receiving thefill or non-fill proofs from the target L2 chain and forwarding them to the RequestManager on the source L2 chain.

    RequestManager 0x7faE…Dc50

    When a user wants to perform a transfer from Ethereum to a rollup they deposit their funds in the request manager. An agent fills the request on the target chain and can later claim the funds locked in the RequestManager. The contract is pausable by Owner. The contract is currently paused. This contract stores the following tokens: USDC, WETH, DAI, USDT.

    FillManager 0xD5EF…6C29

    Agents filling requests from a Rollup to Ethereum use this contract to transfer the funds to the user.

    EthereumL2Messenger 0x3222…34Da

    The Ethereum L2 Messenger stores messages coming from the FillManager for a potential future L1 resolution. It takes over the job of the canonical bridges for rollups which is storing all messages going from the FillManager to the Resolution contract on L1.

    EthereumL1Messenger 0x12B8…5baf

    The Ethereum L1 Messenger contracts forwards messages to the RequestManager.

    OptimismL1Messenger 0x4C36…9b34

    The messenger contracts establish an interface for communication with the RequestManager and FillManager contracts via the rollups. The Optimism L1 Messenger is responsible for relaying the messages to the Optimism chain.

    ArbitrumL1Messenger 0x5911…c0e3

    The messenger contracts establish an interface for communication with the RequestManager and FillManager contracts via the rollups. The Arbitrum L1 Messenger is responsible for relaying the messages to the Arbitrum chain.

    Value Locked is calculated based on these smart contracts and tokens:

    Escrow for USDC, WETH, DAI, USDT 0x7faE…Dc50