Now everything is okay again and the blockchain is running.

Changes?
No changes
You have to be a little more specific dude.. How come the network was stuck for a few hours? You said its all fixed.. But my wallet is still out of sync.. Adding the binpool as a node isnt working either...
Someone is trying to trick the network and not pay the masternodes. Therefore, I have a reference node to ensure that they are paid otherwise that block is not approved. But because their hashpower was stronger my node got kick out and blocked the whole network.
Do -reindex or delete in your everything .icash folder except wallet.dat and icash.conf and you should get on the blockchain again.
{
"chain" : "main",
"blocks" : 7204,
"bestblockhash" : "00000000002c907131eebfec26088a0defa2f3dd4e3dc771a1d0ccb032b71106",
"difficulty" : 146.75052264,
"verificationprogress" : 1.00000000,
"chainwork" : "00000000000000000000000000000000000000000000000000054ce72032840e"
}