What is a cross-chain DApp?

A cross-chain DApp is an application that operates across multiple interconnected blockchain networks. Unlike traditional DApps, which rely on a single blockchain, cross-chain DApps leverage the capabilities of multiple chains to address challenges like scalability, interoperability, and specialization. Cross-chain is also different from multi-chain, a setup where copies of DApps are deployed on multiple blockchains but data, transactions, and messages cannot be shared to one another.

Why is cross-chain important for blockchain applications?

Cross-chain is important because it helps solve the blockchain trilemma, which involves balancing decentralization, security, and scalability. Cross-chain DApps can combine the benefits for varying chain setups (L1s, sidechains, L2s, app chains, etc.). This approach enhances scalability and ensures security, making it crucial for the continued growth and adoption of blockchain applications.Cross-chain also allows for interoperability which is important to unlock the full user base and allow different blockchain networks to communicate with each other, removing siloed experiences.

What are the challenges associated with cross-chain DApps?

Cross-chain DApps face several challenges, including complexity in development and maintenance, security concerns due to an expanded attack surface, and the need to provide a seamless user experience. These challenges require careful consideration to ensure the successful implementation of cross-chain solutions.