> For the complete documentation index, see [llms.txt](https://whitepaper.stepn.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://whitepaper.stepn.com/other-modules/decentralized-exchange.md).

# Decentralized Exchange

STEPN has built its own multi-chain Decentralized Exchange (DEX) **DOOAR**, it will undergo a few stages as outlined below:

Stage 1: A STEPN in-app swap without an independent front end: the swap only serve users within the STEPN app

Stage 2: A DEX with a front end: anyone can provide liquidity to GST/USDC & GMT/USDC pairs.

Stage 3: A DEX with a front end: anyone can create liquidity pools for other tokens (MULTI-CHAIN).

The swap within STEPN will charge 1% trading fee. In this 1% fee: 

1. 0.3% will be rewarded to the liquidity providers.
2. 0.6% will be held at a separate address to give back to the STEPN ecosystem. The potential use cases include: a) GMT buyback and burn; b) NFT sneakers buyback and burn; c) Support ecosystem building events ; d) Community giveaways and raffles.
3. 0.1% will be used for the future development work. 

The contract address of **DOOAR** is: \
\
Solana: \
Dooar9JkhdZ7J3LHN3A7YCuoGRUggXhQaG4kijfLGU2j\
\
BNBChain: \
Factory: 0x1e895bFe59E3A5103e8B7dA3897d1F2391476f3c \
Router: 0x53e0e51b5Ed9202110D7Ecd637A4581db8b9879F

Ethereum:\
Factory: 0x1e895bFe59E3A5103e8B7dA3897d1F2391476f3c \
Router: 0x53e0e51b5Ed9202110D7Ecd637A4581db8b9879F

Polygon:

Router: 0xAcc8e414ceeCF0BBF438f6c4B7417Ca59dcF7E47\
\
Dooar is officially released on 17th August 2022, the DEX address is dooar.com 


---

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