Hundreds of people worldwide were arrested in connection to a South Korea-based dark-web child-pornography site that exploited kids across the globe — including in the United States, officials announced Wednesday.

American, British and South Korean authorities worked together to shut down what they described as one of the largest child pornography operations to date — a site called Welcome To Video — in March 2018.

The dark-web site accepted bitcoin — a form of digital cash that allows users to conceal their identity during financial transactions — in exchange for access to more than 250,000 videos of underage victims.

“Darknet sites that profit from the sexual exploitation of children are among the most vile and reprehensible forms of criminal behavior,” said U.S. Assistant Attorney General Brian A. Benczkowski.

Twenty-three underage victims being abused by the site were rescued from the US, Britain and Spain.

The operator of the site, South Korean Jong Woo Son, was busted and is already serving an 18-month sentence in his home country. He’s also facing federal charges in the US.

Authorities also nabbed 337 users from 12 different countries, some of whom are currently serving 15-year jail sentences.

The site took in $370,000 worth of bitcoin before being shut, the Justice Department said.

Dan Fort, chief of criminal investigations at the IRS, said the investigation was triggered by a tip his agency received.

With Post wires