2 days ago I've send some btc from my Bitcoin wallet called Bitcoin-QT(Version v0.8.6) to my Kraken account. But it is still unconfirmed and still don't see anything on Kraken too.

Last week I did exactly the same thing(send my same Kraken adresse), and I received my coins a half day later on my Kraken account..

So what can be wrong here? Maybe because of the old BTC wallet version? I'm feeling a little stressed now..

Thanks in advance.


A BTC Noob


Most likely the fee was very low and it is therefore not being selected by miners for a block. Bitcoin-Qt 0.8.6 is from Dec 2013 and you should consider upgrading to a newer version of the software. The recent versions have vastly improved fee estimation.

You should probably try to doublespend the transaction with a bigger fee. You can find more information and detailed instructions on Why is my transaction not getting confirmed and what can I do about it?.

  • The fee was very low so can be right. But the last time the fee was also 0.0001 BTC so thats why I did the same. But thank you, the next time I will do a higher fee. – BTC_CZ Jul 3 '16 at 12:01
  • Perhaps the transaction was bigger? Most miners have moved to evaluating a transaction's fee in [satoshi/byte], so bigger transactions would have a smaller fee rate. – Murch Jul 3 '16 at 12:04
  • But if I want to update my wallet I have to delete this version... so its maybe better to wait untill this transacion has been confirmed? Because what if the btc will be sent back because the low fee? – BTC_CZ Jul 3 '16 at 12:04
  • Aah okay, clear:) Yes, that transaction was bigger. – BTC_CZ Jul 3 '16 at 12:05
  • BTC_CZ: Definitely keep a backup of your wallet.dat! You can continue to use the wallet.dat in your new version of Bitcoin. The wallet.dat stores your private keys and information on all transactions you performed and is the single irreplaceable part of your wallet. – Murch Jul 3 '16 at 12:06

Not the answer you're looking for? Browse other questions tagged or ask your own question.