# Contract Overview

Element V2 is a decentralized NFT marketplace protocol,  We try to design a gas-optimized solution with the most NFT swap features.  It inherited a groundbreaking modular architectural from 0x V4, we add more new feature for buy/sell NFTs,  spend countless hours optimizing the protocol to be the most gas-optimized protocol.

[GitHub](https://github.com/element-market/ElementEx)<br>

## Gas-Optimized &#x20;

Every action in a decentralized network cost gas, especially in Ethereum gas is very expensive. We do a lot of code optimization and architecture adjustment for gas optimization, and achieved significant results. &#x20;

#### Ethereum

![Ethereum gas benchmark](https://3459220727-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYoIDMty9LkTE5w7euDhr%2Fuploads%2FlYK5iz4ORUSeHgacfz8d%2F%E6%88%AA%E5%B1%8F2022-04-28%2015.36.12.png?alt=media\&token=fc09698b-a32a-4e37-a4e8-9d7bded2bbde)

* 55% cheaper than OpenSea &#x20;
* 49% cheaper than LooksRare&#x20;

#### BNBChain、Avalanche、Polygon

![BNBChain、Avalanche、Polygon gas benchmark](https://3459220727-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYoIDMty9LkTE5w7euDhr%2Fuploads%2FvFdP6MEfvfUZKz3onf05%2F%E6%88%AA%E5%B1%8F2022-04-28%2015.35.51.png?alt=media\&token=708f68fe-fc54-44f7-bd07-eef4954a7c72)

* 78% cheaper than tofuNFT  &#x20;
* 57% cheaper than NFTrade&#x20;

\[Test case]  [one fee,](https://rinkeby.etherscan.io/tx/0x19fab2c17e9715ef8e4959f9a1d5315474f4dc070e5987f9cfaf6140dbb0ff08) [two fee](https://rinkeby.etherscan.io/tx/0x09e19608c1afe0b623c5e8982c2fd760ab2ed8906b9adb8c3164970016b3c092), [zero fee](https://rinkeby.etherscan.io/tx/0x46aa925b27c1adf5765ec1224f09274478013dc9e36fc730ba65aed259a02622)

## New Features

To bring better liquidity for NFT buyer and seller, many new features have been added to Element V2:

* Collection Offer&#x20;
* Instant royalties for creator&#x20;
* Mixed Payment with ETH + WETH
* Multi Cancellation - cancel all active orders in one transaction
* English Auction&#x20;
* Dutch Auction&#x20;
* Scheduled Listing &#x20;

## Upcoming Features

Some advanced features have been added to the roadmap

* Property Offer - buy an NFT with specified property in a collection