At any point, NFTs on this site still have sole ownership. Each NFT associate with a block of pixels. Whoever owns the NFT owns the block of space. Opensea is a decentralized platform but at the same time, you visit that to find new NFTs to buy. The same concept applies to MillionTokenWall. Rather than having 16 million NFTs like Opensea, we have 400 (potential) and we aim to make it a place where the most influential NFTs will list and can be advertised to sell as well. Moreover, your listed NFTs don't need to belong to one platform like Opensea, it can be hosted anywhere.