Cross-Chain Engineering & Bridge Design

Why bridges keep getting drained. Trust models, message-passing protocols, canonical vs. third-party bridges, and the design space for safe interop.

4 lessons · 2 hr 20 min · expert

1. 1Trust Models: Native, Light Client, Multisig, OptimisticA taxonomy and the actual security each level provides — Vitalik's framework, applied to real bridge designs in production.35 min
2. 2Message-Passing Protocols: CCIP, LayerZero, Wormhole, HyperlaneArchitectures and failure modes of the four most-deployed generalized messaging stacks. Read their docs after this and you should not be surprised by anything.40 min
3. 3Canonical vs. Liquidity BridgesThe speed-versus-trust tradeoff at the heart of every L2 withdrawal decision. Canonical bridges, validity-proof systems, and the third-party liquidity layer that papers over the wait.30 min
4. 4Why Bridges Get Drained (And What's Changing)Four production failures totaling well over $1.3B, what each taught the industry, and the modular interchain security pattern the next generation is converging on.35 min

Educational only — not financial advice.