# The Trader

The DFK Dex is (Decentralized Exchange) is the centerpiece of the DFK Marketplace; it is an automated market maker (AMM). 

{% hint style="info" %}
The DFK Dex is built on top of the UniswapV2 system. For more information, please view the Uniswap documentation: <https://docs.uniswap.org/contracts/v2/overview>
{% endhint %}

## Contracts

### Addresses

#### DFK Chain

| Name             | Mainnet                                                                                             | Testnet                                      |
| ---------------- | --------------------------------------------------------------------------------------------------- | -------------------------------------------- |
| UniswapV2Factory | `0x794C07912474351b3134E6D6B3B7b3b4A07cbAAa`                                                        | `0x2c22Ee594Fe562f548c88ed504D57Ebc86f1D9D1` |
| UniswapV2Router  | `0x3C351E1afdd1b1BC44e931E12D4E05D6125eaeCa`                                                        | `0x7dEfa830CE7E3Ec374B2cE07EabeD6FBB48a1c09` |
| UniswapV2Pair    | *For incentivized pairs, see the* [*Gardens*](https://devs.defikingdoms.com/gardens#dfk-chain-1)*.* |                                              |

#### Klaytn

| Name             | Mainnet                                                                                          | Testnet                                      |
| ---------------- | ------------------------------------------------------------------------------------------------ | -------------------------------------------- |
| UniswapV2Factory | `0x36fAE766e51f17F8218C735f58426E293498Db2B`                                                     | `0x4D4B23d51e763955E7FB5bEDF1FbFa337C2274A3` |
| UniswapV2Router  | `0x9e987E5E9aB872598f601BE4aCC5ac23F484845E`                                                     | `0x40AF60Cc7BD3bb1ae9a99e7C8d94b68E7E9802b6` |
| UniswapV2Pair    | *For incentivized pairs, see the* [*Gardens*](https://devs.defikingdoms.com/gardens#klaytn-1)*.* |                                              |

### ABIs

{% file src="<https://2908426948-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlZLlRJsOJCqm10zUsKr6%2Fuploads%2Fa2Lw6Ktjk4TUfctZlDm3%2FUniswapV2Factory.json?alt=media&token=d1b2ed37-5fb1-4b8e-b6db-bb296f884640>" %}

{% file src="<https://2908426948-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlZLlRJsOJCqm10zUsKr6%2Fuploads%2F79qpInU4IRCflaHqgA82%2FUniswapV2Router02.json?alt=media&token=9f6f3d78-8a0a-4eb4-922e-40cccf380538>" %}

{% file src="<https://2908426948-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlZLlRJsOJCqm10zUsKr6%2Fuploads%2Fc62kqcAF0MaFqUQMJNDX%2FUniswapV2Pair.json?alt=media&token=62dd1d4b-28a0-4d8c-a90b-2fb4271c72c0>" %}

## Historical Contracts

{% hint style="danger" %}
These contracts have been deprecated and should not be used. They are listed here for data analysis and tracking purposes only.
{% endhint %}

#### Harmony

| Name             | Mainnet                                      | Testnet                                      |
| ---------------- | -------------------------------------------- | -------------------------------------------- |
| UniswapV2Factory | `0x9014B937069918bd319f80e8B3BB4A2cf6FAA5F7` | `0x017096690dceADb10dB4926196AA56BB4b4C2629` |
| UniswapV2Router  | `0x24ad62502d1C652Cc7684081169D04896aC20f30` | `0xa755d4728B74ae0D76ecA76d0a36D4Ffc1544122` |