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My transaction has been unconfirmed for more than a week. I had a normal transaction fee (not low). The amount of the transaction was not small >0.5btc. The inputs were not unconfirmed outputs.

The transaction came from a Mycelium wallet to a Bittrex wallet. The Mycelium wallet has no option to increase the fee. The Bittrex wallet has no way to try to spend the unconfirmed outputs to create a CPFP transaction.

Any ideas how I can fix this?

This is a complementary question to Why is my transaction not getting confirmed and what can I do about it? which answers the question's broader implications and proposes mitigation mostly focused on Bitcoin Core.

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  • I take it that your transaction had no change output that went back to your Mycelium wallet?
    – Murch ♦
    Commented Jun 4, 2017 at 18:42
  • Did you get this resolved?
    – Highly Irregular
    Commented Oct 31, 2017 at 2:22
  • I assume your transaction was very large in bytes then. What was its size and what fee was paid? Anyway have you looked at this pool.viabtc.com/tools/txaccelerator ?
    – Fraggle
    Commented Nov 24, 2017 at 12:28

1 Answer 1

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First, find the transaction on a blockchain explorer like blockchair.com or blockchain.info and make sure it appears as valid. If it isn't found, it wasn't broadcast at all by your wallet, and you can find many free broadcast services here.

Assuming it is valid, has been broadcast, then find a free transaction accelerator (don't bother paying the ones that ask for a fee) and enter the transaction ID and usually you'll see it get confirmed. I recommend the ViaBTC Accelerator* or creating an account at AntPool (free) and using the AntPool accelerator.

Be patient. It can still take a few hours or so.

* You'll have to time it right. They only allow a handful per hour.

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