So you're using ZetaCoin.
How do you plan to mitigate 51% attacks? Given that its hashrate is low, one big miner could easily attack it.
The fast block / low confirmation makes it even easier.
Internal system will be off block. I hope to use ZET, the 51% attack issue is a real issue that needs to be addressed by the devs of ZET. Just like all the exchanges have taken the same risk, monitoring of the health of the block-chain can been added to the app before cash-out's. Using any alt-coin has inherited risk. The level of risk the company is willing to take will be adjusted as time will tell. Once the final prototype is done, we will roll as needed.
Since most mobile game play is done in patches of 2-5 minutes, having the ability to work quickly is a high expectation. ZET works for this at this time. In the future it may be BTC 2.0 that does this.
As always, thank you for the insight.