Michael Jackson's daughter Paris made a bombshell announcement to friends ... telling them the MJ album released in the wake of the singer's death did NOT contain MJ's actual voice ... it was an imposter.
TMZ has learned ... the announcement was made during an online video chat with several friends in 2008 ... just before the "Michael" album was released, which contains several previously unreleased tracks allegedly performed by Michael Jackson.
The video chat was recorded ... and Paris joked about the footage eventually "leaking" to the Internet.
Paris had made the announcement in the midst of rumors that MJ's parts on the "Michael" album were REALLY performed by an MJ sound-alike named Jason Malachi ... but both Jason and Sony denied the allegations.
During the video chat, Paris played one of the songs from the album, "Hold My Hand" ... and one of her friends asks why the singer doesn't sound like MJ.
Paris replied, "It's NOT him ... the whole album isn't even him!! Go online ... go on YouTube and look up Jason Malachi. That's him!!"
She continues, "I should know if it's him or not because he would sing to me all the time."
TMZ has learned a recording of Paris' video message is being shopped to various media outlets ... and we're told "Offers are on the table."