Today we released the new version 0.12.14 "Faythe":
* Sync issue fix (PoW calculation see above)
* New logo and icons
* Weblinks
* Mining hashrate info on main form
* Public testnet

The previous version 0.12.13 remains compatible. If you want to update, you can find the new Realeas at https://github.com/Krekeler/documentchain/releases/tag/v0.12.14.0