CCEDK has signaled it will shut down its trading engine at the end of May 2016. BlockShareholders are advised to withdraw their funds as soon as possible.

Source: http://bitscan.com/articles/ccedk-evolves-the-decentralized-conglomerate

The B&C Exchange team is available to facilitate BKS trades as necessary in the absence of centralized exchange support. Please contact us by BitMessage at BM-2cT69Wj7bV21nyDP65EzZFSkW6zrMEP986 if you are interested in buying or selling BKS, or if you require an escrow to complete a trade.