These are completely fraudulent, or counterfeit, Blockshares. And not very convincing counterfeits at that. They contain none of the properties of Blockshares except that they have the label "BKS". You can't mint with them. You can't vote with them. They are not even remotely connected to the B&C Exchange network. And you can't sell them at any exchange trading Blockshares. So don't buy them.
This is a scam.
I think it's a bit harsh to call an asset on a decentralized exchange a scam.
The BKS on the DEX is called OPEN.BKS to show that it is in fact an asset based on an IOU of the real BKS located in a hot or cold wallet. You cannot vote with the asset, you could however vote with the real BKS on the cold if that was the intention which it is not. In case you have OPEN.BKS on your account on OpenLedger, all you need to withdraw to th real thing on your own wallet or other is to enter the address of destination, amount you wish to send provided you have this amount ofcourse, and gone it is, and soon after on your own wallet, or on account on CCEDK exchange could be another example.
BKS is available on the exchange OpenLedger in the same way as any other crypto or NBT and NSR on any exchanges like Poloniex, Bittrex etc., the only diffrence is that on OpenLedger you are actually able to see how many BKS, NSR or NBT is held in the cold wallet of the platform, something which other exchanges do not offer.
It is not yet cold wallets with multisig accounts but expected to be added in next few months thus securing the funds the maximum as the idea would be to have someone trusted by the currency in question to be in possession of one of the keys to access and accept any withdrawals.
OpenLedger is the first exchange offering BKS in automode both deposit an withdrawal, as CCEDK is only able to do it all manually so instead of calling it a scam, why not call it a great achievement and appreciate the option of an easy access as well as the possibility of trading of a currency expected a great future?