hashlists was conceived during the LUKSO Build UP hackathon as we worked on Universal GRAVE, a project aimed at addressing unwanted token distribution and asset management issues. The need for hashlists became apparent when we encountered challenges related to onchain curation. This need is especially relevant for Arbitrum, where low-cost transactions on Layer 2 (L2) networks often lead to security and management issues due to spam and unwanted interactions. hashlists offers a flexible solution to this problem by allowing curated lists of blockchain addresses. These lists can serve as allowlists or blocklists, enabling projects to control access and permissions, which is critical in decentralized finance (DeFi) and other sensitive operations on Arbitrum. With hashlists, projects on Arbitrum can enhance security and reduce unauthorized interactions with smart contracts, creating a safer and more robust ecosystem. Additionally, hashlists addresses the need for structured governance and community management, which is a challenge for many projects on Arbitrum. Decentralized autonomous organizations (DAOs) can use hashlists to create curated voting lists, ensuring only eligible addresses participate in governance decisions. This structured approach to voting enhances transparency and builds community trust, key factors for Arbitrum's continued success.