Yesterday I was looking in the "new" trend, searching as I usually do new users and artists, saw this incredible artwork posted by the user 
I wanted to upvote him but he hasn't a photo and hadn't signed his artwork so I took his drawing in order to assure that wasn't a plagiarist case. Then I found this:
https://twitter.com/UkonuOscar/status/1231256298408337408/photo/4
- UkonuOscar
The artwork belongs to a talented nigerian artist: Oscar Ukonu.
So I downvoted him, he claims that is a collaborative artwork but Oscar didn't mention that is collaborative nor the name of this guy.
It's a obvious case of plagiarism so please don't upvote this user. This is a behaviour that I hate and normally I don't downvote to anyone, there are accounts dedicated to that.
I told the guy who posted this that he can prove he is the author of the artwork by posting a paper with the date and his Hive's name account on it. He still complains and arguments that is an old job of him, pure bullshit.
Here is his post: @scaezer/my-first-trial-on-here
Have a nice day all.