# Zipper Overview

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### Vision

*To be the most secure, transparent, and efficient cross-chain asset gateway, enabling seamless interaction between external blockchains and the Fabric L1 while fostering trust through verifiable on-chain asset backing.*

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Zipper is a **decentralized protocol** within the **Fabric blockchain ecosystem** that facilitates the **zipping (wrapping) and unzipping** **(unwrapping)** of assets. It acts as a bridge for converting assets from most blockchains (such as **Bitcoin, Ethereum, Solana, Dogecoin, and Litecoin**) into **Fabric-compatible zAssets**. These **zAssets** are **fully backed 1:1** by their original assets and integrate with the Fabric ecosystem, creating new possibilities within **decentralized applications (dApps) and DeFi protocols**. **Zipper is the entrance to Fabric for external blockchain assets.**

Using Zipper requires **depositing/withdrawing** assets to/from **vaults on the native chain** for the deposit/withdrawal asset. **Zipper controls these vaults** and keeps them secure using **Trusted Execution Environment (TEE) protocols**. Every deposit/withdrawal transaction is recorded on-chain for full transparency, both on the native chain and Fabric chain.

This protocol is, by design, **extremely straight forward**. By **solely focusing on zipping and unzipping**, Zipper maintains simplicity and reliability, providing users and developers with a **trusted way** to bring external assets into the Fabric ecosystem.

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{% hint style="info" %}
New to the Fabric L1 ecosystem? Check out the [Fabric website](https://fabric.network) here.
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The rest of the documentation will go into more detail about **zAssets**, guide users on **how to use Zipper,** and explains the use of **TEE** to **protect zipped (wrapped) funds**.