This report examines how blockchain technology can address modern antitrust challenges by fostering more transparent, competitive markets. It highlights the structural advantages blockchains can offer—such as decentralization, transparency, and data portability—and explores real-world examples where these features might reduce monopolistic behavior. The authors spotlight cases including a major mortgage software provider whose acquisitions risked consolidating the loan process, and an ad auction platform that benefited from opaque systems. By showing how blockchain-based frameworks could increase trust and lower switching costs, the report argues for a new era of antitrust enforcement—one where companies can innovate while still meeting competitive and regulatory requirements. It offers policymakers and businesses a glimpse of how decentralization may align with consumer protection and open market principles.