OverviewOnchain Block Invaders (OBI) is a fully on-chain NFT collection on ethereum network. The most remarkable thing about this collection is that all of the metadata belonging to the NFTs are stored and generated on-chain as well as having modular contracts that gives holders the chance to have interchangeable skins and color palettes for their NFTs.Deep DiveOne of the most interesting things about this collection is that thanks to its fully on-chain metadata and modular contracts holders ...