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Topic: Confirming Payment ... 1 block, 2 blocks, 6 blocks? (Read 1648 times)

legendary
Activity: 2506
Merit: 1010
A nice thread on Confirmations from today as well:
  https://bitcointalksearch.org/topic/what-is-a-confirmation-1994
administrator
Activity: 5166
Merit: 12850
MyBitcoin probably considers a transaction confirmed after 1 block. The more confirmations, the more difficult it is for the sender to reverse a transaction. 6 is almost impossible (and never profitable), but 1 is still extremely difficult. Even 0 is quite difficult. The last few pages of the Bitcoin paper have probability calculations for this.

Maybe MyBitcoin requires more confirmations when you deposit larger amounts of BTC.
legendary
Activity: 2506
Merit: 1010
I sent a 1 BTC payment to MyBitcoin.  At about 10 minutes later I got the Payment Notification email acknowledging the transfer.  But my own client still showed unconfirmed.

When I logged into MyBitcoin ..., my Balance showed the 1.0 BTC.

Is the number of blocks needed before "confirming" a transaction something that is subjective?  I.e., why does the Bitcoin client wait until a different number .. (6 confirmations, I think ... ) to change to Confirmed, than what MyBitcoin uses?

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