Can somebody explain how it is possible to have 14,755,314 CHC on the last block? Any update about the resolution would be appreciated.
CHC experienced a double spend attack based on an exploit in the bitcoin code
https://bitcoincore.org/en/2018/09/20/notice/It was discovered and resolved, approx. 2 hours after the first invalid block the chain has been reverted and the next valid block has been mined. Cryptopia has been informed about the issue and immediately suspended deposits, withdrawals and trading.
Unfortunately due to another unexpected behaviour in BTC
https://github.com/bitcoin/bitcoin/issues/14341the nodes didn't automatically switch to the longest chain, they need to be stopped and re-started manually with -reindex flag.
Priorities have been set
1.) protect the blockchain
2.) secure the network
3.) communicate
For the explorer, the owner of the site is temporarily unavailable and it is expected to be rectified by the next working day.