Which blockchain is the CrossPunks project based on?

Currently, it's based on the BNB chain. But as CrossPunks was created as a cross-chain project, the next chain will be chosen with the voting, according to the Roadmap.

Where can I see the Roadmap?

It’s available on the official site.

Do you have a WhitePaper?

Currently no, but we're writing a light paper now.

Where can I check your smart contract?

On the GitHub and BscScan.