I saw a company (in germany) advertise its product by saying that it is "Proofed by [company name]".
Is that right? I was a little confused, i can imagine that it is "right", but it is common to say it like this? I would have expected that "Verified by ..." is more common, because the sentence with "proofed" just sounded awkware to me.
To me - as someone whose first language is not english - "proofed" sounds more like something is "something is bullet-proofed", or a house that is "burglar-proofed". At the same time, "proofed" in this context sounds to me like the german "geprüft" (lit. tested, verified) and someone just took proofed because it sounds so close.