# Zeta X Litepaper

## Zeta X (ZX): Building a Trustless Layer 2 for Decentralized Derivatives Trading on Solana

### Abstract

> We present our initial approach to scaling decentralized perpetuals trading through an optimistic rollup built on Solana that leverages zero-knowledge proofs for trustless on-chain settlement. The rollup will use an off-chain matching engine to achieve performance on par with centralised exchanges whilst leveraging the transparency and security of Solana L1 for data availability (DA) and settlement.

### Table of Contents

* [Introduction](https://docs.zeta.markets/zeta-x/zeta-x-litepaper/introduction)
* [ZX](https://docs.zeta.markets/zeta-x/zeta-x-litepaper/zx)
* [Role of $ZEX](https://docs.zeta.markets/zeta-x/zeta-x-litepaper/role-of-usdzex)
* [Why Solana?](https://docs.zeta.markets/zeta-x/zeta-x-litepaper/why-solana)
* [High Level Architecture of ZX](https://docs.zeta.markets/zeta-x/zeta-x-litepaper/high-level-architecture-of-zx)
* [Roadmap](https://docs.zeta.markets/zeta-x/zeta-x-litepaper/roadmap)
* [Appendix A](https://docs.zeta.markets/zeta-x/zeta-x-litepaper/appendix-a)
* [References](https://docs.zeta.markets/zeta-x/zeta-x-litepaper/references)