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19 votes
2 answers

How to sign a transaction using only an offline computer?

I think it is possible to generate keys on an offline computer and sign. To create a transaction I need to input transactions detail, and somehow I have to transfer signed transaction from offline ...'s user avatar
  • 1,852
7 votes
3 answers

Can I spend/transfer bitcoins directly from cold storage?

From reading previous articles I understand that you can receive bitcoins to an address even if your wallet is in cold storage because the bitcoins sent to this address is recorded by someone on the ...
Vinny's user avatar
  • 71
11 votes
1 answer

How to download to use offline?

The site does not have a download option. I can save the page using Google Crome by CTR-S, but the version I have saved in this way does not work.
Peter's user avatar
  • 421
8 votes
2 answers

How do I transfer BTC in cold storage?

I understand how to send BTC to cold storage or offline wallets, but I can't seem to find information on how to send BTC from cold storage to, let's say, a wallet on my computer, or a website, or a ...
CR47's user avatar
  • 183
5 votes
2 answers

What is the best method for creating a paper wallet?

I am looking to move some of my bitcoins from cold storage to a paper wallet. I have heard that metal stamping is one of the better long term strategies since paper can burn or fade. Any other ...
Kristine Aurum's user avatar
0 votes
3 answers

Is there a way to create a tx completely offline? Maybe with a script or cli commands?

I mean generating the transaction itself offline, assuming I know in advance how much bitcoin a UTXO has. In other words, without querying the network for the UTXO balance. Then I also need to sign ...
Pineapple29's user avatar
8 votes
2 answers

Settling offline transactions

Use Case My use case is around a scenario where both customer and merchant possess offline wallets with a balance that has had confirmation on the blockchain. To begin with, let us say that, the ...
cogitoergosum's user avatar
8 votes
2 answers

How to safely spend from a compressed key offline?

Armory supports offline transactions nicely, but doesn't support compressed keys. A number of other ways exist for creating offline transactions, but all of them - every single one I've seen - ...
user10113's user avatar
7 votes
3 answers

Sending bitcoins programatically without running a node [duplicate]

How can I send bitcoins in my web app without running the daemon on my server? Is there a way to do it? Do third parties allow you to send through them?
BitWarrior's user avatar
5 votes
1 answer

Is it possible to have complete cold storage in NXT?

BTC has capability to create new account on offline computer and send some coins to and from that account without ever going online. Sending coins to that account is trivial. Sending from that ...
CoinsKillTheFed's user avatar
4 votes
2 answers

Security implications of regular saving into cold storage

I am thinking about following this plan: Regularly buy bitcoins in an online exchange, 100€/month at market prices. Once the balance in the exchange exceeds a certain limit (500€), move those ...
Em Edih's user avatar
  • 41
1 vote
1 answer

How to securly move bitcoins from a wallet.dat file to a paper wallet? [duplicate]

I have an old wallet.dat file with a few Bitcoins. It is stored in an isolated computer that is not connected to the internet. I would like to get rid of the wallet.dat file, and move all the ...
Adam Matan's user avatar