I bought this paper Especially for a Bitcoin Wallet Paper (hold valuable QR codes if water gets spilled on them). I printed the paper using a Canon Pixma Inkjet with original Canon cartridge. The results were very good .... Then I left the ink to dry for 24 hrs ... And then Placed it in a bowl of water to test if it was really waterproof ... I just touched the ink and it instantly smudged ! So it's back to good old Elephant Paper That holds the QR code even if you rub it quite hard. The top ink goes but the rest is deep in the paper and can be read quietly. Just two stars for this I'm afraid. Pictures are great but it's just not what I expected from something advertised as "waterproof".