How to Bridge NFTs Between Layer 2 Networks

Bridging an NFT between layer-2 networks means moving a non-fungible token from one chain to another, typically through either a canonical "lock-and-mint" bridge specific to the two chains involved, or a third-party bridge aggregator supporting multiple networks — and it works differently, and generally more slowly, than bridging a simple fungible token like a stablecoin.

Why NFTs are harder to bridge than tokens

Fungible tokens are interchangeable — one USDC is identical to another — so a bridge can use a simple pool-based liquidity model, letting users receive an equivalent token quickly by drawing from a pool on the destination chain, then settling the underlying transfer later. NFTs are unique, non-interchangeable assets, which means this pooled-liquidity shortcut generally isn't available. Most NFT bridges instead rely on a lock-and-mint (or burn-and-mint) model: the original NFT gets locked or burned on the source chain, and a representative version is minted on the destination chain.

The typical lock-and-mint process

1. Connect your wallet to the official bridge interface for the specific chains involved.
2. Select the NFT and destination chain.
3. Approve and confirm the lock or burn transaction on the source chain.
4. Wait for the bridge to verify the transaction (this can take anywhere from minutes to longer, depending on the source chain's finality — see our piece on transaction finality for why this varies).
5. The bridge mints a representative NFT on the destination chain, tied back to the original.

What "representative" actually means

This is the part worth understanding clearly: the NFT you receive on the destination chain is often not the exact same contract and token ID as the original — it's a wrapped or bridged representation, tracked by the bridge's own contracts. If you ever want to move it back to the original chain, you typically burn the wrapped version and the bridge unlocks or re-mints the original. This matters for provenance and marketplace recognition — some NFT marketplaces and collections explicitly only recognize the original contract address as "official," and a bridged version may not carry the same status, verification badge, or trading history depending on the marketplace's policies.

Canonical bridges vs. third-party NFT bridge aggregators

Aspect	Canonical/official bridge	Third-party bridge aggregator
Trust model	Chain team's own bridge contracts	Separate operator's contracts and infrastructure
Chain coverage	Usually limited to specific chain pairs	Often supports many chains at once
Speed	Can be slower, especially for optimistic rollups	Varies, sometimes faster
Marketplace/provenance recognition	Generally more likely to be recognized as canonical	Varies by marketplace and collection policy

Our broader guide on crypto bridges covers the underlying trust models in more detail — the same fundamentals apply whether you're bridging tokens or NFTs.

Risks specific to NFT bridging

Beyond the standard bridge risks — smart contract bugs, operator failure, wrong-network mistakes — NFT bridging carries a few extra considerations. Fake bridge interfaces specifically targeting valuable NFT collections are a known phishing pattern, since a single high-value NFT can be worth pursuing individually; always verify the bridge contract address against the collection's or chain's official documentation, a pattern covered in our guide to common DeFi scams. It's also worth confirming, before you bridge, whether the destination marketplace you intend to use actually recognizes the bridged version — otherwise you may end up holding an asset that's technically yours but harder to sell or display where you expected.

Practical tips

Test with a lower-value NFT first if you're using a bridge for the first time. Confirm the exact contract address of both the original and destination collections before listing or trading a bridged NFT anywhere. Keep records of the original transaction in case you need to prove provenance later, especially for higher-value collections.

Gas costs and timing considerations

NFT bridging transactions often cost more in gas than a simple token transfer, since minting a new representative NFT on the destination chain involves more complex contract logic than updating a simple balance. Factor this into your decision about whether bridging a specific NFT is worthwhile, especially for lower-value items where the gas cost across both the source and destination chain transactions could represent a meaningful percentage of the asset's value. Timing also matters: if you're bridging in order to sell on a specific marketplace or participate in a time-sensitive event (like a mint or auction) on the destination chain, account for the bridge's typical processing time, which can range from minutes to significantly longer depending on the source chain's finality characteristics, discussed further in our piece on L2 transaction finality.

Metadata and royalty considerations

Beyond the token itself, it's worth checking whether an NFT's metadata (images, attributes, and other associated data) is stored fully on-chain or referenced externally, since a bridged version needs to correctly point to the same metadata source as the original to display properly on the destination chain. Similarly, creator royalty enforcement varies by marketplace and isn't always guaranteed to carry over identically to a bridged version, since royalty enforcement mechanisms differ across chains and platforms — something collectors and creators alike should verify rather than assume is automatically preserved through the bridging process.

Bottom line

Bridging NFTs between L2s typically uses a lock-and-mint or burn-and-mint process rather than the pooled-liquidity model available for fungible tokens, since NFTs are unique and non-interchangeable. The resulting bridged NFT is a representation tied to the bridge's contracts, not necessarily treated identically by every marketplace, so it's worth confirming provenance recognition before trading. As with any bridge, verify official contract addresses directly and start with lower-value assets when using a new bridge for the first time.