NFTcalls appears to be related to platforms facilitating the acquisition of NFTs using fungible tokens like NFT tokens. These platforms allow for quick and efficient transactions, leveraging blockchain technology to ensure uniqueness and traceability of digital assets. Nufti is a web3 marketplace for buying, selling, and auctioning NFTs with no buy/sell tax. OpenNFT uses blockchain to encrypt digital works, creating unique and traceable tokens with clear copyright.