I made a double payment to the same address mistakenly since my internet was a bit slow, and one payment has 8 confirmations. The recipient says he hasn't received it. I got this message from the transaction:

A conflicting transaction has been detected in our memory pool. The transaction hash displayed below may change.

What can I do to resolve this?

  • 2
    I don't think you need to do anything. Since the transactions conflict, the second one will never confirm. Oct 2, 2015 at 8:25

2 Answers 2


A double spend is not possible. A double spend attempt, yes. You might try and (accidentally or intentionally) broadcast two different transactions that spend the same bitcoins. But only one will eventually get included in a block.

If you say one payment has 8 confirmations, then that's the one that became final ('set in stone') and the other will never happen.

  • a double spent is possible. with altering the mainchain from some past block
    – amaclin
    Mar 30, 2016 at 20:06
  • yes, but it is highly unlikely that someone has right now the ability to mine 8 blocks before there are any new blocks.
    – galileopy
    Mar 30, 2016 at 20:11
  • @amaclin That's extremely unlikely, but even if someone pulls it off, the earlier transaction no longer exists. So eventually, that first spend never took place.
    – RocketNuts
    Mar 31, 2016 at 9:48

The recipient says he hasn't received it.

Show him this transaction on any blockexplorer site

E.g. on blockchain.info

See also Conflicting transaction in memory pool

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