Flexart is an NFT competition platform designed to determine the most beautiful NFT in a contest. It allows NFT collections to raise attention and create special events for their communities, showcasing unique use cases for their NFTs with a primary focus on the beauty of these digital assets. While NFTs typically have mathematically rankable rarity metrics, Flexart shifts the spotlight to the subjective perception of beauty, determined through Tinder-like community voting. This not only adds a fun and engaging element to the community but also fosters a strong sense of unity. Flexart motivates Creators&Holders and other individuals to participate in these competitions, transitioning from mere ownership to active engagement through the submission and voting processes, with results displayed in a leaderboard. The NFT with the most votes earns a certificate, the Proof of Subjective Rarity (#PoSR). In essence, Flexart provides a novel way for the NFT community to assess and celebrate the aesthetic value of their digital beauties besides traditional rarity metrics. This will bring a lot more value to the whole NFT ecosystem.