Grin

Grin is a privacy-focused cryptocurrency that enhances user anonymity through advanced cryptographic techniques, primarily using the Mimblewimble protocol. It allows users to make transactions that are secure, private, and scalable, meaning transaction amounts and participants are hidden while maintaining transparent validation for network integrity. Unlike traditional cryptocurrencies, Grin does not store transaction histories publicly; instead, it combines multiple transactions into a compact form that preserves privacy and reduces blockchain size. This design aims to foster a decentralized, censorship-resistant digital currency that prioritizes user privacy without sacrificing security or functionality.