Bitcoin Forum
December 12, 2017, 09:48:58 PM *
News: Latest stable version of Bitcoin Core: 0.15.1  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: How to send an offline transaction on Windows?  (Read 1719 times)
miner765
Member
**
Offline Offline

Activity: 96


View Profile
November 09, 2014, 06:35:17 PM
 #1

How to send an offline transaction on Windows?

When I use the method on wikipedia I get an error. They have only FAQ for linux on their website, it doesn't seem to work for Windows.

Willing to pay to someone who provides first valid answer.
1513115338
Hero Member
*
Offline Offline

Posts: 1513115338

View Profile Personal Message (Offline)

Ignore
1513115338
Reply with quote  #2

1513115338
Report to moderator
1513115338
Hero Member
*
Offline Offline

Posts: 1513115338

View Profile Personal Message (Offline)

Ignore
1513115338
Reply with quote  #2

1513115338
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1513115338
Hero Member
*
Offline Offline

Posts: 1513115338

View Profile Personal Message (Offline)

Ignore
1513115338
Reply with quote  #2

1513115338
Report to moderator
RustyNomad
Sr. Member
****
Offline Offline

Activity: 336



View Profile WWW
November 09, 2014, 06:46:20 PM
 #2

When you go to the Send tab you will see a button 'Create unsigned transaction' at the bottom of all the fields. (Note: you will only see this if this is a watch only setup i.e.  a Electrum setup with no seed).

When you select that it will create the transaction which is then saved to a USB drive which you then use on your offline PC/Electrum. Your offline installation is then used to sign that transaction.

So in short:

a) Create the transaction on your watch only installation,
b) Save the unsigned transaction and copy it (via USB drive) to offline installation where its signed,
c) Save signed transaction back to USB drive and move it to your watch only installation,
d) Broadcast it via your watch only installation to the network.
miner765
Member
**
Offline Offline

Activity: 96


View Profile
November 09, 2014, 07:01:41 PM
 #3

When you go to the Send tab you will see a button 'Create unsigned transaction' at the bottom of all the fields. (Note: you will only see this if this is a watch only setup i.e.  a Electrum setup with no seed).

When you select that it will create the transaction which is then saved to a USB drive which you then use on your offline PC/Electrum. Your offline installation is then used to sign that transaction.

So in short:

a) Create the transaction on your watch only installation,
b) Save the unsigned transaction and copy it (via USB drive) to offline installation where its signed,
c) Save signed transaction back to USB drive and move it to your watch only installation,
d) Broadcast it via your watch only installation to the network.


So I need a watch-only, not a regular installation of that. Correct?
RustyNomad
Sr. Member
****
Offline Offline

Activity: 336



View Profile WWW
November 09, 2014, 07:37:22 PM
 #4

When you go to the Send tab you will see a button 'Create unsigned transaction' at the bottom of all the fields. (Note: you will only see this if this is a watch only setup i.e.  a Electrum setup with no seed).

When you select that it will create the transaction which is then saved to a USB drive which you then use on your offline PC/Electrum. Your offline installation is then used to sign that transaction.

So in short:

a) Create the transaction on your watch only installation,
b) Save the unsigned transaction and copy it (via USB drive) to offline installation where its signed,
c) Save signed transaction back to USB drive and move it to your watch only installation,
d) Broadcast it via your watch only installation to the network.


So I need a watch-only, not a regular installation of that. Correct?

Yes. A regular installation can sign the transaction as the installation includes the seed and thus all the private keys. A watch only installation/setup does not include the seed and thus no private keys and can thus not sign a transaction.

The term 'offline' signing essentially means that the transaction is taken to an 'offline' setup, one which have the seed and thus private keys, and then have the transaction signed there after which its returned to the online or watch only setup which then broadcasts the transaction to the network.

Just for clarity, for those who might not know, this is how one will go about it to have this setup:

a) You need two computers. One of which will be your offline pc and the other your daily or online pc.
b) Install Electrum on your offline pc and setup your wallet. Make sure that this pc is disconnected from the internet before you setup your wallet and never ever connect this pc to the net and or any network ever again.
c) Copy your master public key to a usb drive after you've setup your wallet,
d) Setup Electrum on your online machine,
e) Select to setup a watch only wallet and make use of the master public key you copied to do this. This Electrum setup now becomes your watch only wallet meaning that you can view all transaction and receive funds but you cannot send any funds as there is no private keys in this setup so no transaction can be signed.
f) If you want to send funds you create the transaction as normal but then select the 'Create offline transaction', save it to a USB drive, sign it on the offline pc and copy the signed transaction back to the watch only wallet which then send that transaction onto the network for processing.

pooya87
Legendary
*
Offline Offline

Activity: 1120


Buy bitcoin they said... who listened?


View Profile
November 14, 2014, 05:28:20 PM
 #5

How to send an offline transaction on Windows?

When I use the method on wikipedia I get an error. They have only FAQ for linux on their website, it doesn't seem to work for Windows.

Willing to pay to someone who provides first valid answer.
where exactly did you get your method? can't seem to find "wikipedia!" link
anyway always use the official site, here is the link to your problem:
https://electrum.org/tutorials.html#offline-mpk

ssmc2
Legendary
*
Offline Offline

Activity: 1120


View Profile
November 21, 2014, 01:52:02 AM
 #6

This is a nice little user friendly guide:

http://www.devtome.com/doku.php?id=secure_your_bitcoin_without_breaking_your_balls-a_simple_guide_to_cold_storage
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!