The true 100-foot wave? Maybe

 

I haven't researched this much, and the article came out at the end of January.  

So now I've researched it a bit, and not much else has been said. So I assume that the claim is being assessed.

I'll tell you one thing for sure -- it was a big wave.

100-foot wave surfed at Maverick's? Potentially.

You can see the assessment in the article linked above.  The shot is below.  The name of the surfer is Alessandro "Alo" Slebir.