None of that is an issue. We have been working on this project/protocol for 2 years. Unlike "traditional" crypto approach, having a single private key for something like a land title is simply stupid. We are working with government officials and agencies. If you are familiar with how nuclear codes work, you need a 2 key system, not one. One-key physical systems are completely flawed.
There is no "hard forking", and there will be nothing like the DAO exploit. These will be closed chains, not open ones. You know why? There is ABSOLUTELY no reason for a non-Ghanaian to be perusing the un-encrypted Ghana land ledger.
The "traditional" problems with crypto simply don't apply to us.
And as far as the "guns" issue...That is one of the FIRST things that we started focusing on.
There is a lot of explanation in our literature concerning these issues.
One of the things I learned while getting my second master's degree in cyber-security is that MOST organizations in crypto have no idea about enterprise scale security.
sounds interesting... am going to look more into the whitepaper etc.