Bridging the Multichain World
How to actually move assets between major chains in 2026, the security models and tradeoffs of each bridge type, and best practices to avoid losing money in transit.
10 min · intermediate · part of Beyond Bitcoin and Ethereum: The Multichain Landscape
What you'll learn
- Why Bridging Matters
- Bridge Types and Trust Models
- Major Bridges in 2026
- Stablecoin-Specific Best Practices
- Evaluating Bridge Risk
- For Deeper Reading
Key terms
- Bridge
- A protocol or contract that moves tokens or messages between two blockchains. Most-attacked crypto category; cumulative hack losses $2.5-3B+ as of 2024.
- CCTP (Cross-Chain Transfer Protocol)
- Circle's native USDC bridge. Burn-and-mint architecture; same trust assumption as holding USDC. CCTP V2 (2025) added Fast Transfer and Hooks. 2M+ transfers, $37B+ volume.
- Chainlink CCIP
- Chainlink's cross-chain protocol. Mainnet GA April 2024. 60+ networks; secures $14T+ in onchain transaction value. Coinbase's sole bridge for $7B wrapped tokens (Dec 2025).
- LayerZero
- Cross-chain messaging protocol. V2 supports 160+ chains. Uses Ultra Light Nodes with configurable security (DVNs).
- IBC (Inter-Blockchain Communication)
- Trust-minimized cross-chain protocol native to Cosmos. Uses light clients; 115+ chains. IBC Eureka (April 2025) extends to Ethereum.
- Light client bridge
- Trust-minimized bridge architecture where each chain runs a light client of the other. Verifies transfers via Merkle proofs against the other chain's consensus.
- Optimistic bridge
- Bridge with a challenge period during which fraudulent transfers can be disputed. Nomad ($190M Aug 2022 hack) was an optimistic bridge.
- Multisig bridge
- Bridge where a small set of signers control the funds. Security depends on multisig integrity. Ronin ($625M March 2022 hack) was a 5-of-9 multisig.
- Intent-based bridge
- Bridge where users express intents and solvers compete to fulfill them. Examples: Across Protocol, CowSwap. Best execution for users.
- Wormhole
- Cross-chain bridge supporting 30+ chains. Hacked February 2022 ($325M); recovered with Jump Crypto bailout. Now uses 19-of-19 Guardian multisig.
- Canonical bridge
- The official bridge for an L2 (e.g., Arbitrum Bridge, Base Bridge, Polygon PoS Bridge). Slowest withdrawals (often 7-day challenge for optimistic L2s) but highest security.
- Wrapped token
- A token issued on chain B that represents a token locked on chain A. Common pattern but adds bridge risk; prefer canonical native versions where available (e.g., native USDC via CCTP).
Read the full lesson in the CryptoBipto app.
Open lessonEducational only — not financial advice.