Miso random NFT is a contract that allows users to redeem a seed ERC20 (the token type sold on Miso) for a randomly selected ERC721 (NFT) using Chainlink VRF (verifiable random function). This contract is designed to allows a batch auction, dutch auction or crowd sale to occur on miso.sushi.com for an ERC20 seed and then the user can optionally reveal that seed. This process is more similar to a blind box or sealed pack for a collector.

Traditionally, NFT seeds have been sold in batches. This sale strategy suffers from a few faults.

• Post seed sale market can not develop
• Reveals are not provably random (can be manipulated)
• Group reveal forces all users to reveal seed simultaneously
• Value of the seed post reveal is changed

These contract work uni-directional (for saftey reasons) but a bi-directional system could also be created that allowed users to draw more than once.

The other portion of this repository is a tool to help with uploading metadata for ERC721s

This application will take the NFT image and metadata in the img and metadata folders respectively and match the name of the .gif to the name of the .json file and upload and pin the data to the Infura IPFS pinning service.

npm install
npm start

Output file will be tokenData.json, data is a json array with each element having an object imageHash and metadataHash representing the uploaded version of the respective files.