I bought some BTC on Coinbase last night and had it sent to Poloniex. I know the BTC wallet address was accurate. Its still pending 11 hours later and doesn't show up in the Poloniex deposit/withdrawal history. Any clue on how long BTC transactions are taking?
The transaction time depends on its priority, and what you pay for each transaction speaks for itself. However, according to my understanding, coinbase always pays pretty high fees for transactions, if they have sent it, you will get notice in a short time. The only answer here is that they have not yet made that transaction.
I had transaction from 2 weeks ago that I send from my wallet to a exchange within 1 hour. I pay a medium transaction fee around 120 sat/bye. The first 3 confirmations, I got it very quickly, but I have to wait for the next 3 confirmations, but overall I'm satisfied how quick my transaction was confirmed.
I think it really depends on how much you are paying in getting your transaction to be pick up by miners. I think my fees is around mid-high priority that's why it is so fast.
After this segwit2x actually this problem solved before after paying high rates also we need to wait for min couple of hours to get our bitcoins in our wallets. But now it's taking less time. If you choose high pay, you will receive coins within one hour. Or else it takes 2 or 3 hours. I sent my BTC from blockchain to exchange site it takes just 2 hours.