The band's guitarist Jonny Greenwood confirmed the hack, and said: "Instead of complaining -- much -- or ignoring it, we're releasing all 18 hours on Bandcamp in aid of Extinction Rebellion. Just for the next 18 days. So for £18 you can find out if we should have paid that ransom. Never intended for public consumption (though some clips did reach the cassette in the OK Computer reissue) it's only tangentially interesting. And very, very long. Not a phone download."
A MiniDisc archive owned by frontman Thom Yorke was hacked last week by an unnamed person, who reportedly asked for a $150,000 ransom to return the recordings.