Double Protocol is an innovative platform that caters to the increasing demand for renting NFTs in various use cases, including games, metaverses, and other utility-driven applications. As the functionality of NFTs expands beyond their traditional role as collectibles and art, there is a growing need to utilize NFTs without the requirement of ownership. This trend is already evident in the GameFi guilds model, and Double Protocol is at the forefront of driving innovation in this domain. By advocating for the development of new ERC standards such as ERC-4907 and ERC-5006 (extensions of ERC-721 and ERC-1155, respectively), Double Protocol enables secure and collateral-free renting of NFTs.