Basic Attention Token (BAT) is a decentralized advertising platform designed to enhance the digital advertising landscape. Originally launched through an initial coin offering in May 2017, BAT aims to address the issues of fraud and opacity that plague traditional online advertising. It allows advertisers to pay publishers in BAT for user attention, creating a more transparent and fair ecosystem. The BAT token serves as a utility within this ecosystem, accurately valuing user engagement with digital content. It incorporates various components such as attention measurement systems, analytics dashboards, and machine learning algorithms. The integration of BAT Ads enables the delivery of targeted advertisements directly to users based on data stored on their devices, eliminating the need for third-party tracking and ensuring user privacy. Developed by the team behind the Brave browser, BAT is closely associated with a platform that prioritizes user privacy by blocking trackers and malware. Through the Brave browser, user attention is tracked securely and anonymously, translating into rewards for publishers while keeping user data private and local. Brendan Eich, the creator of JavaScript and a co-founder of Mozilla, is one of the prominent figures behind BAT. The team also includes Brian Bondy, a lead developer and co-founder of Brave, and Scott Locklin, a senior engineer and co-founder of Kerf Software. Overall, BAT represents a significant innovation in the advertising space, combining cutting-edge technology with a focus on user privacy and fair compensation for attention.