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Liquid Earth
  • What is Liquid Earth?
  • Smart Contracts
    • Overview
      • Integrated Project Intro and Business Proposition
      • Fantom Blockchain
      • The Role of Digital Assets
      • Token Supply
    • Smart Contracts Overview
      • Roles and Access Control within Liquid Earth Contracts
      • Fees
      • Payment System
      • Deployment Sequence
    • Smart Contract Repos
      • FantomAddressRegistry.sol
      • FantomArtion.sol
      • FantomAuction.sol
      • FantomBundleMarketplace.sol
      • FantomMarketplace.sol
      • FantomPriceFeed.sol
      • FantomTokenRegistry.sol
      • Verifiable.sol
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FantomMarketplace.sol

Documentation for FantomMarketplace.sol

Overview

The FantomMarketplace contract allows for the trading of ERC721 and ERC1155 Digital Assets. It offers a comprehensive set of features for listing Digital Assets for sale, buying listed NFTs, making and accepting offers, collecting fees, and more.

Key Features

  • Listing Digital Assets for sale

  • Buying listed Digital Assets

  • Making offers on Digital Assets

  • Accepting offers on Digital Assets

  • Collecting platform and royalty fees in ERC20 tokens

  • Transferring Digital Assets between users

  • Reentrancy prevention

Structs

  • Listing: Contains details such as the price and quantity of the Digital Asset listed.

  • Offer: Contains specifics of an offer made for a Digital Asset, including the offer price in ERC20 tokens.

Mappings

  • listings: Maps the Digital Asset address, tokenId, and owner to a Listing struct.

  • offers: Maps the Digital Asset address, tokenId, and the creator of the offer to an Offer struct.

Events

  • ItemListed: Emitted when a Digital Asset is listed for sale.

  • ItemUpdated: Emitted when a Digital Asset listing is updated.

  • ItemSold: Emitted when a Digital Asset is sold.

  • OfferCreated: Emitted when a new offer is made.

  • OfferCanceled: Emitted when an offer is canceled.

Modifiers

  • isListed: Checks if the Digital Asset is listed by its owner.

  • notListed: Checks if the Digital Asset is not already listed.

  • isActive: Checks if the Digital Asset is active.

  • offerExists: Checks if the offer exists and is not expired.

  • offerNotExists: Checks if the offer does not already exist.

Methods

  • listItem: Lists a Digital Asset for sale, collecting a listing fee in ERC20 tokens.

  • cancelListing: Cancels a Digital Asset listing, refunding the listing fee in ERC20 tokens.

  • updateListing: Updates the price of a Digital Asset listing.

  • buyItem: Buys a listed Digital Asset using ERC20 tokens.

  • createOffer: Makes an offer on a Digital Asset, locking up the offered ERC20 tokens.

  • cancelOffer: Cancels an existing offer, unlocking the offered ERC20 tokens.

  • acceptOffer: Accepts an offer on an owned Digital Asset, transferring the locked ERC20 tokens to the owner.

Access Control

  • Admin Only: Can update the address registry.

  • External Contract Only: validateItemSold is called by the BundleMarketplace on the sale of a Digital Asset.

  • Public: Can get the price of a token.

  • Owner Only: Can cancel and update listings, and accept offers on owned Digital Assets.

  • KYC Only: Can list Digital Assets for sale, buy Digital Assets, make offers, and cancel offers.

Payment System and Fees

  • Tokens for Payments: Transactions in this contract, including buying and selling Digital Assets, are conducted using approved ERC20 tokens. No native FTM tokens are used.

  • Fees: The contract involves platformFee and royaltyFee, which are collected in approved ERC20 tokens.

  • There are no payments made using native tokens like ETH or FTM.

ERC-20 Token Initialization

The contract does not initialize any ERC-20 tokens. It uses the IERC20 and SafeERC20 interfaces from OpenZeppelin for secure interactions with ERC-20 tokens. The specific ERC-20 token used for transactions is generally set when Digital Assets are listed or offers are made.

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Last updated 5 months ago