Sources & further reading
These are primary sources, established data vendors, or canonical specifications we referenced or cross-checked while writing this page.
- L2Beat — Independent L2 risk, TVL, and activity metrics.
- Optimism — documentation — Official Optimism rollup documentation.
- Arbitrum — documentation — Official Arbitrum Nitro rollup documentation.
- DefiLlama — Bridges — Ranked cross-chain bridge TVL and flows across ecosystems.
L2 Bridges & Rollups: The Complete 2026 Guide
Ethereum Layer 2 scaling solutions process thousands of transactions per second while inheriting mainnet security. But moving assets between L1 and L2 — and between different L2s — requires bridges. This guide covers the major bridge types, their security models, the leading rollup networks, and how to minimize risk when bridging your assets.
What Are Blockchain Bridges?
Bridges are protocols that enable moving tokens and data between different blockchain networks. They solve the fundamental problem of blockchain interoperability — each chain is an isolated system, and bridges create the connective tissue between them.
Bridge data and TVL figures are approximate and sourced from L2Beat, DefiLlama, and project documentation as of March 2026. TPS figures represent theoretical maximums. Always verify current bridge status before transferring assets. This guide is for educational purposes only and does not constitute financial advice.
Sources & further reading
These are primary sources, established data vendors, or canonical specifications we referenced or cross-checked while writing this page.
- L2Beat — Independent L2 risk, TVL, and activity metrics.
- Optimism — documentation — Official Optimism rollup documentation.
- Arbitrum — documentation — Official Arbitrum Nitro rollup documentation.
- DefiLlama — Bridges — Ranked cross-chain bridge TVL and flows across ecosystems.