Circle Internet Financial and Poloniex have announced the listing of Grin, a privacy-focused and scalable cryptocurrency utilizing the MimbleWimble protocol, on their exchange. Poloniex has committed to sharing a portion of all Grin transaction fees with the Grin General Fund for one year, demonstrating support for the project, which operates without an ICO or developer subsidy and relies on voluntary contributions. The listing of Grin, which does not use public addresses, required Poloniex to develop unique front and back-end solutions, offering both URL-based and file-based deposit methods to enhance user experience and security. This move is part of Poloniex's broader strategy to enhance its platform and support promising crypto projects. Since Circle's acquisition, improvements in customer support and infrastructure have been made, allowing for the addition of new assets like Grin, Bitcoin Cash prefork trading, and support for institutional users, indicating a commitment to advancing the crypto space and providing a robust platform for users.