Digital painting, prospects

[Roman Guro]

Posav,

There is also a problem with the author. Since this pixel, then how to prove that they're yours? Since there is no unique identity, then this work can be done by anyone and anyone named by the author.

Individual letters IS. After all, his hands drawn
Just as in real.
Here, for example fragments closer:

Вложение 778931Вложение 778941
There is a smear, stroke, etc.
Textures do not smear, it is less sure.

As for proof of authorship, you are right. If legally, then the best proof of authorship is the possession of the file is original. The proof is on the level of peer review is also possible, but difficult