SAN FRANCISCO — Web service provider DreamHost is turning to an online litigation crowdfunding platform to help cover the costs of challenging a U.S. Department of Justice warrant that seeks information about visitors to an anti-Trump protest website.

The company is seeking to raise $10,000 through its campaign on CrowdJustice, a kind of “Kickstarter for lawsuits” site that originated in the U.K. and launched operations in the United States in January. The cutoff date for the funding campaign is Sept. 16.