Grin is a privacy-focused cryptocurrency that launched in January 2019, based on the innovative Mimblewimble protocol. Named after the fictional spell in the Harry Potter series, Grin seeks to offer scalable and private transactions by obfuscating transaction details and reducing blockchain bloat. Its lightweight design helps maintain decentralisation, promoting open-source development without a pre-mine or an initial coin offering (ICO). Grin employs a unique linear emission rate, introducing a steady supply to discourage hoarding and price speculation. The community-driven project relies on donations and volunteer contributions, embodying a minimalistic design philosophy that values privacy and simplicity. This ensures it remains an accessible and sustainable financial tool for verifiable, confidential transactions.