NGC grades crypto coins but not ones with a hologram?
As of right now. My buddy spoke with the head of NGC and asked why they wont grade them and his response "we only grade real coins". My buddies reply "you grade McDonalds Big Mac coins" his response "But those are really nice coins".
Personally I think eventually they will start to grade them regularly, kind of like how PCGS has started to do so a little bit. At least this is my hope. We shall see.