Blockchain technology enhances cross-chain interoperability of digital assets by enabling seamless communication and data exchange between distinct blockchain networks. Techniques like atomic swaps allow trustless peer-to-peer asset transfers across chains. Cross-chain bridges facilitate asset movement by locking tokens on one chain and minting equivalents on another. Interoperability protocols, such as Polkadot and Cosmos, provide frameworks for chains to share data and value via standardized messaging. Smart contracts automate and secure these processes, ensuring transparency and reducing reliance on intermediaries. Sidechains and layer-2 solutions further improve scalability and compatibility, enabling faster, cost-effective transactions. By leveraging cryptographic techniques like hash time-locked contracts (HTLC), blockchains ensure secure, decentralized interoperability, fostering a unified ecosystem for digital assets.