The problem NFT warranties solves

The blockchain smart contract allows users to prove ownership
Provide the purchasing history, warranty period, and other item information
The warranty card includes the item’s serial number and buyers wallet adrdress that proves ownership
The NFTs are decaying in nature, in that, after a certain period their use for the redemption of warranty benefits offered by the brand/retailer will expire
Whole project is deployed on polygon blockchain

Challenges we ran into

Manual decaying of NFTs that is sent to a 0x0000000000000000000000 address to the polygon network and the NFT is no more visible to anyone. Couldnt make the devaying process automatic.