The Spume Protocol is an end-to-end transactional layer that enables payment infrastructure for physical and digital non-fungible token assets on the Ethereum blockchain. It allows anyone to build personalized NFT marketplaces complete with on-chain payment processors and tokenize physical and digital assets such as art, real estate, and intellectual property. The Spume ecosystem is powered by the SPUME utility token, which offers revenue sharing, staking, fee discounts, and powers Spume DAO. Spume's NFT marketplace has features such as multi-asset NFT trading, multi-chain compatibility, and instantaneous royalties. The platform is community-governed and owned, and has a proprietary asset valuation system.