It seems that is a marketplace and based on your purchases, you get some points/ vouchers (?). I check OP's link but I didn't see anything related to crypto... 
I visited your site and it does not appear to be related to cryptocurrencies or any blockchain project/protocol.
I searched for Blockchain and couldn't find any details.
I searched for Blockchain and couldn't find any details.
I was thinking same thinking, but after a bit further checking,
1. Looking at this help page (support.karpine[dot]io/kb/a5/how-to-earn-reward-tokens.aspx), it confirm the website doesn't use blockchain in any way, just your usual website where you get point by using their referral link.
2. I found this subdomain explorer.karpine[dot]io/default which looks like cryptocurrency explorer, but all blocks only have 1 transaction (transaction which give mining reward to miner). This is the only blockchain-related page i could found.
