Why I built Proofrr (and the WhatsApp message that broke me)

Running multi-client creative work, the moment that finally pushed me to build this: a client approved a video over a WhatsApp voice note, then two weeks later swore they never signed off on that version. No record, no paper trail, just my word against theirs.
Proofrr exists so that never happens again — every approval lives where the work lives.
Anyone else have a "this is why I built X" moment? Curious what broke for you?