Basic Attention

Basic Attention Token (BAT) is an ERC-20 utility token built on Ethereum that sits at the centre of a decentralised digital advertising system. It aims to address what its creators describe as a broken, fraudulent and opaque online advertising market by creating a direct payment channel between advertisers, website publishers and the users whose attention is being sought. The token is tightly coupled to the Brave browser, a privacy-focused browser designed to block trackers and serve ads without relying on third-party data collection.

Advertisers pay BAT to publishers in exchange for verified user attention, and ad targeting is handled entirely on the user's own device using locally stored data, so no personal information is sent to external servers. The system uses attention-measurement tools, analytics dashboards and machine learning algorithms to estimate the value of a user's engagement with an advertisement. BAT lives on Ethereum and is compatible with several other ecosystems including Polygon, Avalanche, Solana, Near Protocol and Harmony, though no consensus algorithm or block time is recorded for BAT itself, as it is a token rather than a base-layer chain.

The data provided does not include a protocol-level fee stream, revenue figures or a breakdown of who retains income generated by the network, so fee-based measures that this site calculates for other assets cannot be populated here. What is recorded is that advertisers are the payers within the system and publishers plus users are the intended recipients of BAT, but no numeric fee rates are stored. The circulating supply stands at approximately 1,495,724,657 BAT against a maximum supply of 1,500,000,000 BAT, meaning about 99.71 percent of all tokens that will ever exist are already in circulation, leaving a dilution overhang of roughly 0.29 percent.