Useful for checking addresses
https://blackcoin.holytransaction.com/tx/1ff843a187f07f96f39cf72521b52361e68f4ccf753659c07dede7cdcf9ef102 Im not sure if I should be avoiding poloniex. When Ive tried to send BLK it says sent but I cant find any record of it and the coins never arrive. When I send 30 coin from my wallet to that same address the coins arrive not long after, its been hours since Poloniex says they sent and its disappeared apparently.
I offered to send BLK to someone at Poloniex to see if they arrive and they dodge the question, so avoid ?

I'll submit a ticket I guess, Polo used to work fine though

Bigolas: shome, Please file a support ticket at
https://poloniex.freshdesk.com . Include the transaction id, amount sent, and from where it was sent.Thank you.
Theres a discount of 2.3% on Polo vs Bittrex I guess related to this, could be alot worse though
Poloniex are broadcasting the transactions about 16 hours after withdrawing, fairly consistently. Depositing is fine and arrives in normal time.
But withdrawing coins - you'll see them arrive at the same time they end up on the blockchain and will be the same tx. Wallets can create a txid without broadcasting it which is why it 'looks' like it disappears.
We have no idea why they are doing this and numerous support tickets have not fixed the problem. It is not happening at any other exchange.