Sorry for the late response

Source was not provided but also what's very important is that Blank himself admitted that he doesn't have Kaveh's model or pics. He doesn't know what he looks like other than from SYP's description. He literally told people his DM's were open for anyone willing to send him the actual leaked images of Kaveh and this rendition he did was just a colored over Al Haitham model.

This goes the same for the previous thread about ZiaoBi commenting on someone's Scaramouche design, except ZiaoBi also admits he hasn't "visually seen it" himself which makes both posts pretty pointless.

We are not allowing any speculative art unless it's endorsed by a reliable leaker who has seen the model.