The quartet's blog says they are taking the case "to the next level of court", while Swedish authorities refuse to confirm the appeal has been filed.

The court convicted Gottfrid Svartholm Warg, Peter Sunde, Fredrik Neij and Carl Lundstrom of charges related to copyright infringement, sentencing each to a year in prison. A 30m kronor fine was also imposed, with funds going to entertainment companies including some music majors.

The verdict created outrage among The Pirate bay's followers. Yesterday computer ...