Cross-Chain & Bridges: Connecting Blockchains
Learn why blockchains need to communicate with each other, how cross-chain bridges work, and the important security considerations you should understand.
5 lessons · 1 hr 39 min · advanced
- 1Why Blockchains Need BridgesThe isolation problem of independent ledgers, the multichain reality of modern crypto, and why connecting chains is now critical infrastructure.12 min
- 2How Cross-Chain Bridges WorkThe mechanics of lock-and-mint, burn-and-mint, atomic swaps, and the major messaging protocols (LayerZero, IBC, Chainlink CCIP) that move value across chains today.14 min
- 3Bridge Security & RisksA history of major bridge exploits (Poly Network, Wormhole, Ronin, Harmony, Nomad, BSC Token Hub, Multichain, Orbit), the trust models behind them, and how to evaluate bridge safety.21 min
- 4The Cross-Chain Future: LayerZero, CCIP, IBC, and the Interoperability StackA 2026 map of the full interoperability stack — LayerZero V2, Chainlink CCIP, Cosmos IBC, Circle CCTP, Wormhole, Across, Hop, Stargate, ZK light clients, and the Optimism Superchain — and how to navigate it as a user.27 min
- 5Step-by-Step: Bridging USDC the Right WayA practical, hands-on walkthrough of bridging USDC and other assets across chains in 2026: CCTP V2 from Ethereum to Solana, canonical vs Across vs LayerZero from Ethereum to Arbitrum, the pre-bridge checklist, common failure modes, recovery procedures, real cost comparisons, and the limited tooling for USDT.25 min
Educational only — not financial advice.