> For the complete documentation index, see [llms.txt](https://docs.sphera.world/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sphera.world/nft-bridge/bridge.md).

# Overview

The Sphera NFT Bridge allows you to seamlessly move your NFTs between **Hedera** and **Avalanche** networks.

## Why Bridge?

* **Access More Marketplaces** - Trade your NFTs on Avalanche-based marketplaces
* **Lower Gas Fees** - Choose the network with the best fees for your transaction
* **Flexibility** - Use your NFTs across different DeFi ecosystems

## Supported Collections

| Collection     | Hedera | Avalanche |
| -------------- | ------ | --------- |
| Sphera Amateur | ✅      | ✅         |
| Sphera Fan     | ✅      | ✅         |
| Sphera Ultras  | ✅      | ✅         |
| Legacy Pass    | ✅      | ✅         |
| Annual Pass    | ✅      | ✅         |

## How It Works

### Hedera → Avalanche

1. Your NFT is **locked** in a secure smart contract on Hedera
2. A **wrapped version** is minted on Avalanche
3. The wrapped NFT has identical metadata and artwork

### Avalanche → Hedera

1. Your wrapped NFT is **burned** on Avalanche
2. The original NFT is **unlocked** on Hedera
3. You receive your original NFT back

## Security

* Smart contracts are designed with security best practices
* Only the bridge authority can mint/unlock NFTs
* Your NFT is never destroyed - it's either locked or unlocked

## Get Started

Ready to bridge? See [How to Bridge](/nft-bridge/how-to-bridge.md) for step-by-step instructions.


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