A blockchain advertising platform is a decentralized digital advertising ecosystem that uses blockchain technology to improve transparency, security, and efficiency in the ad industry. Unlike traditional ad networks that rely on centralized systems, blockchain advertising platforms record all transactions (such as impressions, clicks, and payments) on a public ledger. This ensures data integrity, reduces ad fraud, and allows advertisers and publishers to interact directly—often using smart contracts and cryptocurrency for payments. These platforms empower users with more control over their data and help brands determine where and how their ad budgets are being spent.