MadHive, founded in 2015 and headquartered in New York City, is a leading blockchain-powered demand-side platform (DSP) for the digital advertising industry. The company has raised $300 million in total funding, with a Series D round in June 2023 led by Goldman Sachs Asset Management, achieving a $1 billion valuation. With a team of 51–200 employees, MadHive enables advertisers to deliver transparent, data-driven campaigns across CTV and OTT channels. Its technology enhances audience targeting, prevents ad fraud, and ensures data privacy through advanced blockchain and analytics solutions.