Uniswap Labs has unveiled Compact v1, an ERC-6909 ownerless contract aimed at addressing the persistent issue of cross-chain fragmentation in decentralized finance. The new framework introduces reusable resource locks and programmable commitments, enabling developers to build interoperable applications without undermining security or composability. Early adoption by projects such as LI.FI and Rhinestone suggests that Compact v1 could become a key building block for cross-chain settlement in the evolving DeFi landscape.
The rapid expansion of rollups and diverse execution environments has led to a fragmented ecosystem where liquidity is dispersed across incompatible systems. Traditional escrow-based models often require users to surrender custody or depend on centralized intermediaries, which can weaken composability and increase risk. Compact v1 is designed to resolve these challenges by offering a standardized contract structure that allows tokens to be credibly committed across multiple chains while remaining under user control.
How Compact v1 Works
At the heart of Compact v1 are Resource Locks, which are generated when sponsors deposit tokens into the contract. These locks create ERC-6909 tokens that remain under the control of the sponsors but can back multiple Compacts, or verifiable commitments. The system introduces four distinct roles: Allocators, who prevent double-spending; Arbiters, who confirm conditions for claims; Tribunal, which functions as the settlement engine for cross-chain swaps; and Emissaries, who provide fallback verification particularly for smart contract wallets. This modular design enables developers to customize settlement processes and trust models depending on their use cases.
Uniswap Labs has underlined the importance of security in the rollout of Compact v1. Independent firms OpenZeppelin and Spearbit have already conducted reviews of the protocol, with full audit reports expected to be published soon. Compact v1 will also be included in Uniswap’s ongoing bug bounty program, further reinforcing its security assurances.
Adoption and Deployment
The protocol has already gained traction among developers, with LI.FI and Rhinestone integrating it into their systems. Compact v1 is currently live on Ethereum mainnet, Unichain, Base and Arbitrum, with plans to expand into additional networks over time. This broad deployment illustrates Uniswap’s commitment to creating a widely applicable infrastructure for decentralized trading.
Read the full announcement ⤵️https://t.co/qSyOJey3eF
— Uniswap Labs 🦄 (@Uniswap) September 23, 2025
The launch of Compact v1 also plays a central role in powering cross-chain swaps on UniswapX, the decentralized exchange’s settlement layer. By simplifying the complexity of asynchronous execution environments, Compact v1 provides developers with tools to build seamless user experiences without relying on siloed infrastructure.
Driving Innovation in Decentralized Trading
Uniswap’s move to introduce Compact v1 comes at a time when the platform is experiencing significant growth. Monthly trading volume on the protocol climbed to $143 billion in August, up from $99.3 billion in July. The introduction of Compact v1 is being viewed as a strategic effort to maintain Uniswap’s leadership in the decentralized finance sector by reinforcing its infrastructure for cross-chain trading.
By combining standardization, modular design and security, Compact v1 is set to establish itself as a foundational primitive for interoperable DeFi applications. Its adoption signals a shift toward more sustainable and efficient cross-chain operations, reducing the need for centralized oversight while ensuring liquidity remains accessible and secure across diverse blockchain environments.