The pedal was mentioned in 2018 "Effects and Pedals Arena Corner". The pedal was also mentioned in 2021 Premier Guitar interview.

The final drawer keeps the madness moving with a DigiTech Whammy and a Death By Audio Rooms reverberator. And since the Whammy is stowed in the rack, he abstains from the foot-controlled, pitch-shifting function and only uses the octave for the bridge of fan favorite "We Own the Night."

02:52 left of his pedal board looks like a 5th gen whammy

In 1991, hide used the DigiTech Whammy Pitch-Shifting Pedal during the recording of X's second album, 'Jealousy,' as noted on Wikipedia.

Photo of Jordan Cook's pedalboard (Jordan Cook performing at the Surrey Fusion Festival 2011). DigiTech Whammy Pitch-Shifting pedal can be seen, third pedal from the left.

In this blog post featuring photos from a Verve session, you can see the Digitech Whammy (not the Drop version) on Nick McCabe's pedalboard.

The shape and the notable logo "Whammy" on the pedal are visible in this Gear Run, at the mark 1:44. Hayes' Whammy (5th gen) is also discussed in [2018 Music Radar interview]:

I don’t do solos, but whenever there’s a line on one string I’ll kick this in as an octaver. I use this on 666 Conducer, anything where it’s just one lick. I don’t do solos, but whenever there’s a line on one string I’ll kick this in as an octaver. It’s good fun for messing around with riffs. There’s a song Rob wrote using the bass version of it called Circus Bazooko and that pedal really inspired the music.

In this last photo of Wayne Sermon's third pedal board, source from the Rig Rundown with Imagine Dragons, a Whammy pedal is seen at the bottom-left corner.

During the 2015-2016 'Purple' tour, John has been seen using this pedal

In 2008, in an interview with bass player magazine. John States that his signal chain has a Digitech Whammy in it.

In this interview with Guitar World magazine, Lanois is asked, "How do you get that amp-being-driven-to-destruction tone on 'The End'?"

Lanois: "That is as simple as my Vox AC30 cranked up to ten. It is an early ’60s copper top—not a top boost, with the blue speakers. I use the Normal channel. I was using my ’56 gold-top Les Paul with P-90s. It was the same one I used on Bob Dylan’s Time Out of Mind record. I think it is my best sounding Les Paul, the darkest sounding one anyway. For the initial performance, I was using a DigiTech Whammy pedal for some of the octave dive bombs. I was also using a cheap DBX DJ box that gives you an octave below."

In the guitar playthrough video for the song 'Broken Vision Rhythm', Erik can be seen using the Digitech Whammy V at 0:59 and 1:54

In his interview for Music Radar, he told about his rig, in which Whammy was visible.