I will reiterate because maybe somone is just too lazy to click the link
https://twitter.com/coin_artist/status/584338579691798529first tweet:
The painting is a #puzzle, there is 4.87 #bitcoin concealed by this image. Happy #EasterEgg
second tweet right, created day after first one and being reply specifically and only to mentioned first tweet :
The new #bitcoin #puzzle was made possible by @robmyers @MattdeCourcelle and @urbenz.
I don't think you have to be satoshi nakamoto to figure out which "new puzzle" second tweet refers to.
You have their handles. Go ask them if they were involved with the creation of the painting puzzle.
The creation of the #bitcoin #art #puzzle was made in collaboration with the talented artist, developer, and hacker: @robmyers.