DALi

Mina ZK Apps are great for creating privacy preserving smart contracts, but a limitation that developers face is the limitation of storage to just 255*8 (Field) bits of information. Our project builds a library that aims to seamlessly integrate Mina smart contracts with off-chain storage on FileCoin, giving developers the freedom to use storage as their app requires.

The project uses web3.storage API to extend storage of Mina ZK Apps smart contracts off-chain on FileCoin. To guarantee authenticity of the data, the CID of the FileCoin/IPFS storage is stored on-chain on the related Mina smart contract. Any developer who wishes to develop a ZK App with off-chain storage only has to extend the OffChainStorageSmartContract class instead of the SmartContract class provided by Mina. The demo for the project is a NFT wallet that uses off-chain storage to track a users NFTs as well as the meta data of those NFTs.