Hello, I took a look at the repo, you might want to use the new NFT Standard instead of NEP-4, and I’m not sure if you plan to use ChainLink or Band. It seems like neither are in testnet.
From the presentation instead, I saw you send the NEAR seed phrase to the back-end, which is a security hazard. Some examples, like social drop, might help you find a better way to distribute the NFTs on NEAR.
Approved, and looking forward to seeing what you build!