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As a large language model trained by OpenAI, I do not have detailed information about specific blockchain platforms or products. I am not able to browse the internet and I do not have access to current information about specific companies or products. In general, a modular blockchain is a type of blockchain that allows for the customization and integration of different modules or components. This can enable the creation of specialized or tailored blockchain solutions for specific use cases. I do not have information about whether or not the Hive blockchain is modular. If you have any more general questions about blockchain technology, I would be happy to help you to the best of my ability.