Hi forsakenpnut.
To clear any doubt, we do not and never did provide and/or promote Tetraplay as a provably fair casino.
Our game providers are learders in the classic gambling industry and they are new to bitcoin and cryptography. Despite an amazing work on the design and graphics, they don't provide provably fair games.
We are in discussion with them to either adapt the current games and/or create new provably fair games.

Few days ago we launched 3 new table games with a hash system allowing you verify that the card deck has not been modified after the game started.
Feel free to try the Blackjack here (works also in fun mode)
The game checker is publish on Jsfiddle here,we use SHA256 hash.
All comments and suggestions are welcome