Game and Blockchain

Game industry is growing more than i expected, by support from many device industry like mobile phone, PC, console, etc. Not left behind, blockchain company is targeting game market to by making game based on blockchain, rewarding player using coin/token, or make a marketplace that accept crypto.

Currently, -in my opinion- blockchain is only used for payment system. I will explain it first;
Refer to technical paper that made by satoshi nakamoto, bitcoin creator, block chain is distributed legder. By this explanation, usability of block chain is recording data.

Back to the point.
I always think how cryptography can be used in game engine. If looking to open vpn key exchange, the key between server and client is encrypted using AES-CBC, SHA-256, etc for securing data exchange. How if it use for initializing user game account? i think it will erase all cheating game activity, why? By using blockchain power and cryptography in game engine, before player ending his session, he will make a log that saved in blockchain, and if he login again, he will read the latest data he made.

Cheating activity is changing some data in game, and in current situation, if in game data has change and have some different with server, it's not make any problem. How if using cryptography as authentication?