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Topic: DELETE - page 2. (Read 930 times)

sr. member
Activity: 938
Merit: 256
June 25, 2018, 11:03:05 AM
#9
Hi,

In this guide I'd like to show you how to do offline-transactions using MyEtherWallet.
By using this method your private-key won't won't leave the offline machine so this is the safest way of sending transactions without a hardware-wallet.

First of all something about your private-key/keystore-file/recovery-seed: Do NOT store this files on your computer which is connected to the internet! If you're getting infected my malware you may lose all of your coins/tokens linked to this private-key. The safest way would be just using your keystore-file on your offline computer to sign transactions and storing your private-key/recovery seed safely on paper. Your private-key and recovery-seed are unencrypted provide instant access to your wallet while the keystore-file is encrypted and requires an additional password.

Requirements:
- a computer which is connected to the internet
- a computer which isn't connected to the internet
- Your ETH public-key
- Your ETH private-key (Keystorefile should be preferred)


Installing MyEtherWallet locally [Do this on the offline computer]

Download the local version of MyEtherWallet from the official MyEtherWallet Github (etherwallet-vX.X.X.X.zip):
https://github.com/kvhnuke/etherwallet/releases

Move "etherwallet-vX.X.X.X.zip" to your offline computer (USB Stick, Smartphone, ...) and extract the content from the ZIP.

Open MyEtherWallet by double clicking 'index.html' - you may have to right-click it, then go to 'Open with' and select a browser; I'd recommend using Google Chrome - you may want to download it on your online machine and transfer it to the offline machine.

Making an offline transaction

STEP 1: [ONLINE] Go to the MyEtherWallet-Website and select the 'Send Offline'-tab (https://www.myetherwallet.com/#offline-transaction). If needed adjust your GWEI according to https://ethgasstation.info/ by clicking on 'Gas Price: X GWEI' in the upper right corner and adjusting the slider to your needs. Then enter the public-address of the sender account into the 'From Address' textbox and click 'Generate'.
Write down the contents of 'Gas Price' and 'Nonce'.



STEP 2: [OFFLINE] Open your local copy of MyEtherWallet, select the 'Send Offline'-tab and scroll down to 'Step 2: Generate Transaction (Offline Computer)'.

Enter the following information:
- To Address: Receiver-address
- Value / Amount to Send: Amount you want to send (it's also possible to send Tokens by clicking on 'ETH' on the right side of the textbox and selecting the respective Token in the dropdown-menu)
- Gas Limit: https://kb.myetherwallet.com/gas/what-is-gas-ethereum.html
- Gas Price: Value from STEP 1
- Nonce: Value from STEP 1
- Data: optional - leave empty if not needed



Now scroll down until you see 'How would you like to access your wallet?' and log in using your preferred authentication-method (I'd recommend using your Keystore-File!) and click 'Unlock'.



Click 'Generate Transaction'

STEP 3: [OFFLINE] You'll now see two textboxes - 'Raw Transaction' and 'Signed Transaction'. Copy the content from 'Signed Transaction' and transfer it to your online computer.



STEP 4: [ONLINE] Go back to the MyEtherWallet-Website and select the 'Send Offline'-tab (https://www.myetherwallet.com/#offline-transaction). Scroll down to 'Step 3: Send / Publish Transaction (Online Computer)', enter your signed transaction, click 'Send Transaction' and confirm it.




Congratulations, you're done Smiley

Sidenote: To check your balance just use https://ethplorer.io/ or https://etherscan.io/ or log in to MyEtherWallet just using your public-key (View only of couse).

If you have any questions please feel free to ask anytime.

Best regards,
Nestade







This is gonna be good but it's too complicated to update our wallet.
I'm okay with using MEW via google chrome MEW extension, it's very good and easy to use.
Every time you want to login, you just have to enter the password and you can view or send ETH from there.
jr. member
Activity: 217
Merit: 6
June 25, 2018, 08:29:29 AM
#8
If you'd like to use TrueCrypt just make sure to use version 7.1a as 7.2 got no encryption-functionality anymore. And I agree, I'm sure they just received a NSL and had to stop their service or insert a backdoor for NSA and they chose the first option.
sr. member
Activity: 536
Merit: 251
June 23, 2018, 08:39:37 AM
#7
if you have large sums-you can do so. the only difficulty with ethereum wallet-you never know what to choose the Commission to make the transaction take place. thanks for the instruction
full member
Activity: 476
Merit: 107
June 22, 2018, 05:20:27 PM
#6
Well, I'm not sure but it may be possible creating a second partition but it has to be isolated from the online-partition (Encryption?).
A USB will solve the problem at hand. Just make sure that the USB where the local copy of Myetherwallet will be stored would not be used and plugged into another computer unless one is certain that it is malware free. You can also follow this guide to create a second partition out of the current local disk that you have(if it is malware/virus free, it will do) and follow this tutorial if you want to encrypt the second partition that you will create.
sr. member
Activity: 728
Merit: 254
June 22, 2018, 04:58:53 PM
#5
This involves a little technicality, I have not really tried this out, but am willing to give it a shot, thanks for the piss
legendary
Activity: 2688
Merit: 1480
till 25.07
June 22, 2018, 01:40:20 AM
#4
awesome guide, thank you for that great piece of work. maybe i should consider getting an offline PC at home now Roll Eyes
legendary
Activity: 1988
Merit: 1768
June 20, 2018, 04:12:08 AM
#3
This is really a very good description and guide. Your contribution is worth saving it into my bookmark. Keep it up and you will certainly collect a lot of merit. I would like to give you more, but I'm now broke.  Wink
hero member
Activity: 1022
Merit: 683
Love is the answer
June 20, 2018, 03:34:53 AM
#2
Hi,

In this guide I'd like to show you how to do offline-transactions using MyEtherWallet.
By using this method your private-key won't won't leave the offline machine so this is the safest way of sending transactions without a hardware-wallet.

First of all something about your private-key/keystore-file/recovery-seed: Do NOT store this files on your computer which is connected to the internet! If you're getting infected my malware you may lose all of your coins/tokens linked to this private-key. The safest way would be just using your keystore-file on your offline computer to sign transactions and storing your private-key/recovery seed safely on paper. Your private-key and recovery-seed are unencrypted provide instant access to your wallet while the keystore-file is encrypted and requires an additional password.

Requirements:
- a computer which is connected to the internet
- a computer which isn't connected to the internet
- Your ETH public-key
- Your ETH private-key (Keystorefile should be preferred)


Installing MyEtherWallet locally [Do this on the offline computer]

Download the local version of MyEtherWallet from the official MyEtherWallet Github (etherwallet-vX.X.X.X.zip):
https://github.com/kvhnuke/etherwallet/releases

Move "etherwallet-vX.X.X.X.zip" to your offline computer (USB Stick, Smartphone, ...) and extract the content from the ZIP.

Open MyEtherWallet by double clicking 'index.html' - you may have to right-click it, then go to 'Open with' and select a browser; I'd recommend using Google Chrome - you may want to download it on your online machine and transfer it to the offline machine.

Making an offline transaction

STEP 1: [ONLINE] Go to the MyEtherWallet-Website and select the 'Send Offline'-tab (https://www.myetherwallet.com/#offline-transaction). If needed adjust your GWEI according to https://ethgasstation.info/ by clicking on 'Gas Price: X GWEI' in the upper right corner and adjusting the slider to your needs. Then enter the public-address of the sender account into the 'From Address' textbox and click 'Generate'.
Write down the contents of 'Gas Price' and 'Nonce'.



STEP 2: [OFFLINE] Open your local copy of MyEtherWallet, select the 'Send Offline'-tab and scroll down to 'Step 2: Generate Transaction (Offline Computer)'.

Enter the following information:
- To Address: Receiver-address
- Value / Amount to Send: Amount you want to send (it's also possible to send Tokens by clicking on 'ETH' on the right side of the textbox and selecting the respective Token in the dropdown-menu)
- Gas Limit: https://kb.myetherwallet.com/gas/what-is-gas-ethereum.html
- Gas Price: Value from STEP 1
- Nonce: Value from STEP 1
- Data: optional - leave empty if not needed



Now scroll down until you see 'How would you like to access your wallet?' and log in using your preferred authentication-method (I'd recommend using your Keystore-File!) and click 'Unlock'.



Click 'Generate Transaction'

STEP 3: [OFFLINE] You'll now see two textboxes - 'Raw Transaction' and 'Signed Transaction'. Copy the content from 'Signed Transaction' and transfer it to your online computer.



STEP 4: [ONLINE] Go back to the MyEtherWallet-Website and select the 'Send Offline'-tab (https://www.myetherwallet.com/#offline-transaction). Scroll down to 'Step 3: Send / Publish Transaction (Online Computer)', enter your signed transaction, click 'Send Transaction' and confirm it.




Congratulations, you're done Smiley

Sidenote: To check your balance just use https://ethplorer.io/ or https://etherscan.io/ or log in to MyEtherWallet just using your public-key (View only of couse).

If you have any questions please feel free to ask anytime.

Best regards,
Nestade


And another high-quality post from your side - thanks again!

Will merit you soon... keep up the good work!
jr. member
Activity: 41
Merit: 793
inactive
June 20, 2018, 02:31:13 AM
#1
DELETE
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