RIP-7755 is a contract standard that enables trustless cross-Layer 2 calls using state proofs, eliminating complex bridge infrastructure while maintaining security through Ethereum's consensus layer.
Understanding RIP-7755's Core Innovation
RIP-7755 leverages Ethereum's ability to verify state proofs between Layer 2 networks using L1 block hashes and L2 state data posted to L1. Unlike traditional cross-chain bridges, which require separate trust assumptions, this Rollup Improvement Proposal establishes a standardized framework for L2-to-L2 communication that inherits Ethereum's security guarantees.
The protocol addresses a critical challenge in the Ethereum ecosystem: L2s today act as isolated systems instead of one unified layer, resulting in liquidity fragmentation across chains. By enabling seamless interoperability, RIP-7755 helps unify the fragmented Layer 2 landscape without compromising security.
How RIP-7755 State Proofs Work
The technical foundation revolves around ERC-1186 storage proofs that allow any Ethereum L2 to verify the state of another L2 trustlessly. The verification process involves validating the beacon root, L1 execution client's state root, destination chain's output contract storage root, and the destination chain's state root in sequence.
This multi-step validation ensures that cross-chain calls can be proven without relying on external validators or bridges. For users, this means faster settlement times and reduced counterparty risk when moving assets or executing contracts across different Layer 2 networks.
Real-World Applications and Benefits
Enhanced Stablecoin Liquidity
For platforms focused on stablecoin infrastructure, RIP-7755 enables seamless movement of USDC, USDT, and other stable assets across Layer 2 networks without traditional bridge delays or fees. Cross-L2 Actions by Eco Inc. exemplifies this use case, providing unified stablecoin liquidity that serves users regardless of their preferred L2 network.
Cross-Chain App Development
RIP-7755 enables new use cases like cross-chain NFT minting apps that rely solely on Ethereum and its rollups, opening possibilities for developers to build truly interoperable onchain applications without trust compromises.
Reduced Bridge Risk
Traditional cross-chain bridges have been frequent targets for exploits, with billions lost in bridge hacks. RIP-7755's trustless approach eliminates these attack vectors by removing the need for custodial bridge contracts.
Industry Adoption and Implementation
Base's research team has launched a proof of concept for RIP-7755, with compatibility confirmed for OP Stack chains and Arbitrum. The standard represents a collaborative effort across the Ethereum ecosystem, with Eco Inc. contributing to the proposal alongside other major stakeholders.
Eco Inc. has built Cross-L2 Actions, a permissionless, trust-neutral protocol that directly implements RIP-7755 for facilitating cross-rollup transactions. This modular solution can be easily extended to any Ethereum rollup permissionlessly and supports any proving scheme, demonstrating the practical viability of the RIP-7755 standard in production environments.
Integration with Modern Cross-Chain Standards
RIP-7755 works synergistically with emerging standards, such as ERC-7683, which supports cross-chain intents. By pairing ERC-7683 with RIP-7755, developers can build comprehensive systems supporting cross-chain token transfers on top of standardized cross-chain messaging interfaces.
This combination allows users to specify their intent (what they want to achieve). At the same time, RIP-7755 handles the secure verification of cross-chain execution, creating a seamless user experience across the entire Ethereum Layer 2 ecosystem.