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Author Topic: Checking balance of a wallet without exposing the wallet to transactions?  (Read 621 times)
vermorel
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July 19, 2011, 06:05:50 AM
 #1

The strongest way to secure a bitcoin wallet consists of create it offline and keep it offline.

As far my understanding goes, there is no way to check the balance a wallet without retrieving the transaction history. Hence, it should be possible to retrieve all transactions on an unsecure networked machine, and then to copy the transactions to a portable drive, and then re-run the Bitcoin client on a secure strictly offline machine to assess a somewhat not-too-old balance value for wallet.

Is my understanding correct? Is there smarter ways to achieve the same result?
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casascius
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July 19, 2011, 06:12:55 AM
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If you know the bitcoin addresses to which the wallet's coins were sent, just look them up on blockexplorer.com.

Companies claiming they got hacked and lost your coins sounds like fraud so perfect it could be called fashionable.  I never believe them.  If I ever experience the misfortune of a real intrusion, I declare I have been honest about the way I have managed the keys in Casascius Coins.  I maintain no ability to recover or reproduce the keys, not even under limitless duress or total intrusion.  Remember that trusting strangers with your coins without any recourse is, as a matter of principle, not a best practice.  Don't keep coins online. Use paper wallets instead.
vermorel
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July 19, 2011, 06:17:29 AM
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Yes, indeed.
AndreasBrekken
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July 19, 2011, 08:04:10 AM
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Nice, thanks for the tip.

Software developer, creating financial services using Bitcoin.
Kermee
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July 19, 2011, 08:04:44 AM
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If you know the bitcoin addresses to which the wallet's coins were sent, just look them up on blockexplorer.com.

This.

Cheers,
Kermee

Stephen Gornick
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July 19, 2011, 11:19:19 AM
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I've not used it but there is:
  BTCBalance.net
  - http://forum.bitcoin.org/index.php?topic=27669.0

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