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

Why Bridging Matters

In a multichain world, you cannot avoid bridges. Whether you want to move USDC from Ethereum to Solana for a memecoin trade, move SOL to Cosmos to use Osmosis, or buy an NFT on Polygon while your funds are on Arbitrum — you will use a bridge. Unfortunately, bridges have been the most-attacked category in crypto. Cumulative bridge hack losses 2021-2024 are approximately $2.5-3 billion per Chainalysis data. The list of major incidents is long: Wormhole ($325M, Feb 2022), Ronin ($625M, March 2022), Nomad ($190M, Aug 2022), Multichain ($210M, July 2023), Orbit Bridge ($82M, Dec 2023), and many smaller ones. This lesson covers how to bridge in 2026 with the lowest risk possible. The core principles: prefer canonical bridges, use trust-minimized over multisig where possible, prefer USDC CCTP for stablecoin movements, and never bridge to a chain unless you trust the destination.

Also in this lesson

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).

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Educational only — not financial advice.