SubNFT
Web3 Subscriptions using NFTs
About
The problem it solves - Prevents sharing of subscriptions as it is unlikely that one will share their wallet (that is private key) - Makes it simple for devs to implement subscriptions in their dapps
How it's made
Challenges we ran into - The contract was exceeding 24 kb and we solved this by removing many of the contracts we were extending and writing the functionality we needed on our own