The artist and the visualiser who collaborated on the first NFT house are locked in a dispute over the copyright of the virtual property, which last week sold for $500,000.
Mars House is "the first NFT digital house in the world," according to online art marketplace SuperRare, which sold the digital file.
But Argentine 3D-modeller Mateo Sanz Pedemonte, who created visualisations of Mars House for artist Krista Kim, claimed the project was "a fraud".
"I am afraid to say that this project is a fraud," Pedemonte told Dezeen.
"Krista Kim never owned this project fully," he continued. "I have created the project with my own hands, combined with her direction. I do possess the full intellectual property." "Mars House is my art creation and my copyright"
However, Kim disputed his account. She confirmed to Dezeen that Pedemonte created visualisations for her but claimed that she retained full ownership of the project.
"Mars House is my art creation and my copyright," Kim told Dezeen. "He does not need to be credited because I own the copyright."

Mars House was sold for over $500,000
Kim told Dezeen that she contracted Pedemonte to work on the project through freelance marketplace Freelancer.com. She claims she did not agree to give the 3D visualiser any rights to the artwork.
"Mateo provided freelancer rendering service for which I own the copyright of Mars House," she said. "He was pr...