Modular Blockchains
Web3 / infrastructure applications
Modular blockchains are blockchain architectures that decompose traditional monolithic blockchain functions—consensus, data availability, settlement, and execution—into separate specialized layers that can be independently developed, optimized, and composed. Rather than a single network handling all responsibilities, modular designs allow different blockchain services to specialize in their function; for example, one layer may focus purely on fast transaction execution while another specializes in data availability guarantees. This separation enables greater flexibility and scalability because each module can be optimized according to its specific requirements without constraining other functions. Modular blockchains represent a philosophical shift from "do everything yourself" to "do one thing well and compose with others." Example: Celestia is a modular blockchain that specializes exclusively in consensus and data availability, allowing external execution layers like Rollups to inherit its security guarantees without executing transactions themselves, enabling multiple execution environments to share the same DA layer. Why it matters for blockchain infrastructure: Modularity enables blockchains to scale more efficiently by specializing components and reducing redundancy across the ecosystem. It allows developers to use best-in-class solutions for each function rather than accepting monolithic tradeoffs.
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