HADO is a decentralized NFT marketplace at www.hadonft.io offering investment opportunities and an online gallery. It is similar to other platforms like Charity NFT Labs, Hash2O.com and MADU in that it leverages blockchain technology for decentralized finance (DeFi) and NFTs. HADO provides a platform for buying, selling, and potentially investing in NFTs, offering passive income opportunities. The contract address is 0x47E3d11bA6FBBb317F92d542Ba875562132E47C9.