You’ll find the first piece of art currency on top of the oven in the second area you unlock. Use a ladder or stack some boxes to reach it.

You'll find this one at the back of the warehouse, between the bucket and the sink.

Grab a ladder and climb up to the top of the basketball hoop — that’s where you’ll find your third art currency.

I found this bill inside the bags during the 'The Soft Rustle' mission. The easiest way to spot it is by scanning the area with your phone.

As some comments have pointed out, the bill isn’t tied to one specific mission — it can appear somewhat randomly. That’s why it’s important to scan every money container you come across when hunting for the $100 bill.

According to PaliPino you can get the Bill in the "Golde Cage Breakout" Mission. So definitly check those boxes! (didnt check it myself).

This is by far the easiest one to find. After unlocking the third area, you'll see a gift next to the workbench — just open it to get the twenty Euro bill.

After a bit of grinding, you'll eventually reach the point where the vault opens. In the center, you'll find a gift containing the fifty Euro bill.

This one is hidden in the Warehouse. As soon as you walk in, you'll spot a pillar with light switches to your right. Use a box or something else to climb up, and you’ll be able to get behind it and grab the seventh bill.

After completing the 'Saving Piglet' mission, you’ll receive a gift containing the eighth bill.

This one is hidden under the chair in the chill area of the Piggy Bank room. You can either unlock it for 5k or use a ladder to jump over the wooden wall.

The tenth one is a bit tricky for me, and I’m not entirely sure how to get it yet.

Story Spoiler:
In my first playthrough, I chose the ending where you blow up the Piggy Bank, and I got it then. In my second run, I picked the other ending and didn’t get it. I've read several different suggestions on how to obtain it, but they all vary.

Marol mentioned in a comment that he obtained the bill in both playthroughs, but took a specific preparation step before choosing the ending.

I’ll test it out and update this section once I know the 100% method to get it.

Thanks to the comments and various online guides, I was able to put together this “Tips and Tricks” section:

- The missions for the fourth (and possibly the tenth) bill are not fixed.
- Some commenters and I have found bills in random missions, even if they’re supposed to have fixed locations. So make sure to scan your boxes with the Scanner App on your phone (as shown in the $100 bill section).
- Silender shared a great comment about the endgame grind - I recommend checking it out in the comments section.
- You can accept and decline missions, but be aware that you’ll lose crypto when declining them.
- While you’re on top of the oven for the $10 bill, you can place a ladder on it to reach the “Out of Bounds” achievement. Guide for the Achievement

Thanks for reading this guide! I hope it helped you find the entire Art Compendium collection.

Just a reminder: these are the locations where I found the bills. If you discover them in different spots or have any tips, feel free to share them in the comments!

I’ll update this post from time to time as I find other or easier ways to get the bills.

Good luck,
Damian