Did Led Zeppelin rip off "Dazed and Confused" from Jake Holmes?

Yes. Jake Holmes wrote and recorded the song in 1967, two years before Led Zeppelin released their version. Jimi Page saw Holmes perform it live, then took the arrangement, lyrics, and structure without credit or payment. Holmes filed a copyright lawsuit in 2010, which settled in 2012 with undisclosed terms, but Page’s name remains on the original album credits.