Compare L2s and modular blockchains across security, decentralization, cost, and ecosystem to choose the right chain to build on or deploy capital to.
## CONTEXT The modular blockchain thesis has produced a crowded landscape of optimistic and ZK rollups, validiums, app-chains, and modular stacks separating execution, settlement, consensus, and data availability. In 2026, builders and capital allocators must choose among dozens of chains with materially different…
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