Guide for signing transactions offline using MyCrypto instead of MEW:
https://support.mycrypto.com/offline/making-offline-transaction-on-mycrypto.html
Topic: DELETE (Read 930 times)
Air gaped MEW allows to sign transactions not only for ETH but also for ERC20 tokens. If your token is not in MEW list you can add it by following these steps:
P.S. To send signed transaction via online computer you must add you token to online MEW by using standard way to add custom token.
- 1st step: Open js folder (located inside MEW folder on you offline PC).
- 2nd step: Find etherwallet-master.js file and open it with notepad++ editor.
- 3rd step: Into module.exports section* of above file add the following string :
{"address":"address of your token","symbol":"symbol of your token","decimal":number of decimals of your token,"type":"default"}
Just as an example: for HAV I have added
{"address":" 0xf244176246168f24e3187f7288edbca29267739b","symbol":"HAV","decimal":18,"type":"default"}
You string can be added between any {.........} available but it's better to place it in the alphabetical order.
* For v. 3.21.13 of MEW this section is started at 20951 line if you open etherwallet-master.js file with notepad++ editor. - 4th step: Choose added token to send and follow the same procedure to sign ERC20 transaction as it was described in OP.
P.S. To send signed transaction via online computer you must add you token to online MEW by using standard way to add custom token.
Thank you very much for your contribution - totally forgot about it.
Just buy the ledger or the ledger trozer. These two hardware wallets also keep the private key secure, much safer than the web.
Well, a hardware-wallet (as written in the guide) would be the safest way of storing your assets.
However for smaller amounts signing your transactions offline and keeping your private-key isolated from the internet would be a very good alternative to buying a hardware-wallet.
Thanks for guide. This is the first time I heard about Offline feature of MyEtherWallet.
Last time I use Ethereum Wallet (download from ethereum.org) but the problem is that it does not support ERC-20 tokens.
Last time I use Ethereum Wallet (download from ethereum.org) but the problem is that it does not support ERC-20 tokens.
Thank you very much for your feedback!
Hi,
Thank you very much for your feedback!
Well, I could be wrong but as far as I know you can't do offline-transactions using MyCrypto.
I also prefer MyCrypto but I'm using it in combination with my Ledger Nano S hardwarewallet.
If you haven't got a hardware-wallet I'd suggest using an interface that allows signing your transactions offline to keep your private-key isolated from the internet - otherwise it doesn't matter which interface you're using but at least don't store your unencrypted private-key/recovery-phrase on your PC and only use your keystore-file.
But I'd recommend signing your transactions offline and checking your balance using a blockchainexplorer or just buying a hardware-wallet.
If you're doing a complete factory reset you could even buy a Ledger Nano S second hand - just make sure to do a reset (or even two; just to be sure)
Best regards,
Nestade
Thanks this is really a good post, really helps a lot.
In fact, this is a very useful guide, because recently I often meet messages that wallets have been hacked. An offline wallet is the best way to control your money.
Thank you very much for your feedback!
Actually, I've left MEW and have moved to another service, Mycrypto.
But this is a very good tutorial, maybe later I will try it. Thank you for sharing this tutorial.
But this is a very good tutorial, maybe later I will try it. Thank you for sharing this tutorial.
Well, I could be wrong but as far as I know you can't do offline-transactions using MyCrypto.
I also prefer MyCrypto but I'm using it in combination with my Ledger Nano S hardwarewallet.
If you haven't got a hardware-wallet I'd suggest using an interface that allows signing your transactions offline to keep your private-key isolated from the internet - otherwise it doesn't matter which interface you're using but at least don't store your unencrypted private-key/recovery-phrase on your PC and only use your keystore-file.
But I'd recommend signing your transactions offline and checking your balance using a blockchainexplorer or just buying a hardware-wallet.
If you're doing a complete factory reset you could even buy a Ledger Nano S second hand - just make sure to do a reset (or even two; just to be sure)
Best regards,
Nestade
Great guide for everyone, who want to secure assets. I used to send offline transactions before I bought Ledger Nano S. And there weren't any problems!
Hi,
Thank you very much for your feedback
Yes, I guess it's just more effort in comparison of using a hardware-wallet - but most people won't do transactions every day anyway.
Signing your transactions offline is definitely better than just using MetaMask/Keystore-File or even your unencrypted private key on an online machine.
There's always a risk of getting infected by malware and using a hardware-wallet or doing offline transactions should prevent it from getting access to your wallet.
Very useful information! Thank you.
I find phishing sites MyEtherWallet using the Metatask plugin. But this does not always help.
Your solution is more universal
I find phishing sites MyEtherWallet using the Metatask plugin. But this does not always help.
Your solution is more universal
Hi,
Completely isolating your private-key from the internet by signing the transactions offline should protect you from almost any kind of malware and phishing.
It's just more work than using a hardware-wallet.
Best regards,
Nestade
We all have Personal files and we’ll want to keep hidden from the people but, Just locking your PC with a password isn’t sufficient, as people can still find methods to bypass the lock screen and see your personal files. So to be safe from this some people are locking their drives with the password, but not everyone Knows How To Lock Drive in Windows 10.
Just Go To This Website https://www.trickyworlds.com/how-to-lock-drive-in-windows-10/ And Solve Your Problem
Just Go To This Website https://www.trickyworlds.com/how-to-lock-drive-in-windows-10/ And Solve Your Problem
Nice and concrete overview, will bookmark it. As for me, i'm too lazy and sending my tokens via MyEtherWallet online...)
It is a very good guide, that cannot save people time, but can save people money, which is more important in this case
There was also a message that MetaMask was updated, and that users have to sign in, without seed phrase, was that also of a phishing nature?
There was also a message that MetaMask was updated, and that users have to sign in, without seed phrase, was that also of a phishing nature?
A good way for transactions ! Thank you for the post, it is very productive and contains information that allows you to protect your wallet from scams.
Made a translation of your topic for Russian-speaking users. Very useful information! My one merit for you
https://bitcointalksearch.org/topic/m.46499807
https://bitcointalksearch.org/topic/m.46499807
Just buy the ledger or the ledger trozer. These two hardware wallets also keep the private key secure, much safer than the web.
Thanks for guide. This is the first time I heard about Offline feature of MyEtherWallet.
Last time I use Ethereum Wallet (download from ethereum.org) but the problem is that it does not support ERC-20 tokens.
Last time I use Ethereum Wallet (download from ethereum.org) but the problem is that it does not support ERC-20 tokens.
Actually, I've left MEW and have moved to another service, Mycrypto.
But this is a very good tutorial, maybe later I will try it. Thank you for sharing this tutorial.
But this is a very good tutorial, maybe later I will try it. Thank you for sharing this tutorial.
In fact, this is a very useful guide, because recently I often meet messages that wallets have been hacked. An offline wallet is the best way to control your money.
Thanks this is really a good post, really helps a lot.
Great guide for everyone, who want to secure assets. I used to send offline transactions before I bought Ledger Nano S. And there weren't any problems!
Very useful information! Thank you.
I find phishing sites MyEtherWallet using the Metatask plugin. But this does not always help.
Your solution is more universal
I find phishing sites MyEtherWallet using the Metatask plugin. But this does not always help.
Your solution is more universal
All your guides are really helpful to the community but it gets wasted since it is being posted in a Mega Spam Board. Could you please move all your guides to the Beginners and Help Section so that it could be really helpful to the newbies who are coming here to seek knowledge?
P.S I have been meriting you constantly due to the immense work you put in your each guide! But Guides like these should never get buried in these Spams. :/
P.S I have been meriting you constantly due to the immense work you put in your each guide! But Guides like these should never get buried in these Spams. :/
Some tokens are not listed already when trying to choose that asset to send, can I add new token info when using it offline? I could not do it before.
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