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The non-fungible asset class(NFTs) started its journey in 2017. Images, videos, digital art, music - anything that can be rendered in a digital form - has been minted into unique NFTs on the blockchain. The NFT trend has brought over $2.5 billion in sales this year. NFT-based concert tickets can not only become a memento but also a Proof of Attendance through upgradable Nfts. There’s a number of genuine use cases where ‘upgradable nfts’ can be leveraged for daily use-cases.