Questions tagged [offline]

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Generating a BCH address offline

To generate offline BTC addresses, I use the bitcoin-core app from bitcoincore.org. What is the BCH equivalent of this? Is it the bitcoin-unlimited app?
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0answers
286 views

Making a read-only Linux SD card, where are the security loopholes? (offline key generation and signing)

I have already identified a way to make an SD card truly read-only on HackaDay. So let's consider this situation: A third party have used dd to transfer the Linux image to an SD card The ...
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0answers
31 views

Preparing a “send” order offline the same way you can create an offline wallet? [duplicate]

If I have several bitcoins in an offline wallet / cold storage and want to send a few bitcoins to some address, can I somehow prepare and sign the send order offline and only copy the result (say ...
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1answer
410 views

Bitcoin stolen from Electrum 2.9.3

my btc were stolen with an anonymous transaction. How was possible? Electrum should be a offline secure wallet, besides they were stolen during the night , with my desktop offline. The receiver ...
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1answer
457 views

Selecting a computer for the OFFLINE Electrum Wallet

Would a Samsung Chromebook be a suitable choice to run the offline wallet??? I read that Chromebooks run a Unix based OS. (I would obviously disable networking, bluetooth etc.) Thanks
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1answer
74 views

Offline Bitcoin Wallet [closed]

I would like to have bitcoin and store them as safely as possible. I want bitcoin data to be stored on my disk -- I don't want to some online service to manage my wallet. I also would like to have ...
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2answers
4k views

How to send/receive Bitcoins from cold wallet?

I have generated a Cold Wallet using bitaddress.org (pub + priv key) How do I send / receive Bitcoins from / to the generated addresses? Is there something I should mind about? Receiving seems to be ...
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1answer
294 views

Verify Offline Bitcoin Bundle on Ubuntu

I'm having difficulty GPG-verifying my offline Armory installer for Ubuntu, using the suggested steps: $ cd Downloads # the directory containing the *.deb $ gpg --recv-keys --keyserver keyserver....
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1answer
144 views

Can I cancel an offline transaction with this approach? (opposite of nLocktime)

I would like to cancel a transaction I sent offline, and am looking for ways to prevent it from being accepted by the network. Will the Bitcoin client prohibit the entire Tx if there is even on input ...
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2answers
191 views

Deposits to an Offline Wallet

What happens when I put a deposit into my wallet, while my computer is offline? Lets say for example, I automatically deposit btc from a pool to the wallet on my computer, but I shut my computer down ...
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0answers
57 views

How to most efficiently keep in sync blockchain on offline computer (including through bitcoin-qt upgrades)?

I have bitcoin-qt running on online computer. I want to: copy blockchain to offline computer (preferably using WORM media for security reasons) from time to time update offline copy with newest ...
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1answer
117 views

Bitcoin Core Offline Reinstallation

It is possible to reinstall Bitcoin Core Offline? I copied all the files to my external HDD. I use Ubuntu. Thanks
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1answer
531 views

How to confirm offline a transaction

Is it possible to confirm a transaction offline in the following scenario: the "receiving" device is first online. There is no restriction at this point. Especially, it can prepare anything needed ...
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2answers
126 views

How to do Bitcoin transactions, if major Internet connections are broken? [duplicate]

If major Internet connections are broken, what happens to BitCoin transactions? For example, the Internet connection is broken between three major areas (North America, Europa, and Asia) for a couple ...

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