Sellers can use Ethreth, a Decentralized Warranty Issue platform based on Polygon, to issue warranties to buyers. In lieu of taking up physical room in filing cabinets, you can now save your warranties in the form of NFTs, where you will always have proof of ownership. The guarantee is now digital or physical token. We have used the Soulbound NFT concept to provide Warrranties that can not be a victim of theft with the added features of Expiry date and Resell that makes it convenient to be used in many more use-cases.