This is a ERC1155 contract for the Unicorn ETHGlobal Hackthon Rose NFT project. We are selling our friend Jennica's Painting in our dapp. Frontend repo: https://github.com/Zilan-Ouyang/hackathon This contract has been deployed on Kovan Optimism 0xc84Cbb1CB2fD1a3100F0bdb0c2fF4d6472Fc2553