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Blockchain technology offers various platforms designed for specific domains like finance and supply chain management, but there is a lack of a universal blockchain platform. This highlights the need for interoperability among these platforms, especially as the digital world becomes more interconnected. This analysis examines blockchain interoperability strategies, focusing on Polkadot and Cactus. Polkadot uses Relays and Sidechains for interoperability, unlike Oracles or Hash Time Lock Contracts. Cactus supports Hash Time Lock and Notary Scheme, offers flexibility, and integrates with other blockchain platforms. It is crucial to choose the right interoperability strategy based on specific use cases and requirements. |