Modular blockchains go mainstream
Web3 is explicitly shifting to modular stacks that decouple consensus, data availability, and execution to boost scalability—but that creates new interoperability and security trade-offs. The trend forces engineers to design composable APIs, swappable execution layers, and multi-chain routing logic rather than monolithic chains. (mpost.io)
Celestia’s data-availability primitives are live on mainnet beta and the protocol enforces an 8 MiB transaction-size limit via CIP‑38 for block payloads. (docs.celestia.org) Fuel’s “Ignition” rollout ships a high‑throughput execution environment built around the FuelVM and Sway language with a UTXO model and parallel transaction execution aimed at rollup-scale throughput. (fuel.network) EigenLayer’s restaking market has matured into the largest “shared security” primitive on Ethereum, with multiple data sources reporting protocol-level TVL in the low‑to‑high‑teens billions of dollars and the project adding an on‑chain slashing mechanism in April 2025 to enforce AVS accountability. (defillama.com) Interoperability stacks are standardizing around permissionless messaging: Hyperlane’s Nexus specifically advertises connectors that let Celestia‑anchored rollups communicate with Cosmos IBC ecosystems and non‑IBC chains. (hyperlane.xyz) Optimistic rollups still rely on a multi‑day challenge window—commonly seven days—to accept or contest fraud proofs, a latency parameter that researchers are actively trying to shorten with dynamic fraud‑proof constructions. (ethereum.org) Market incumbents are already swapping stacks: Coinbase’s Base announced a migration off the OP Stack to a unified in‑house “Base” stack, citing a plan to accelerate upgrade cadence to roughly six hard forks per year and preserve Stage‑1 decentralization. (blog.base.dev) Key production gaps remain: L2Beat notes Celestia’s block‑reconstruction protocol and collective‑recovery tooling are still under development, meaning some rollup integrations must plan for reconstruction and liveness safeguards today. (l2beat.com)
