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Author Topic: Tails with old Electrum (2.7.9) for cold strorge?  (Read 447 times)
A1exander
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November 29, 2017, 08:39:50 AM
 #21

It seems I've found a bug or glitch in Electrum for Android. I've tried to create watching-only wallets several times. Two of them under Linux and one under Android work perfectly, but another one under Android shows the only transaction to the wallet as "Not verified" despite more than 90 confirmations.

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November 29, 2017, 06:31:29 PM
 #22

It seems I've found a bug or glitch in Electrum for Android. I've tried to create watching-only wallets several times. Two of them under Linux and one under Android work perfectly, but another one under Android shows the only transaction to the wallet as "Not verified" despite more than 90 confirmations.

What is the nature of that Android device? How full is it storage wise, how many transactions should it load?

Also, what is the operating system you're running, an old OS may not function as well as a new one (I had it on jellybean and it kept crashing).


~

Thanks, I have a similar feeling and I'll follow this advice. It is not a spending wallet and will be used only when I decide to 'cash out' (partially) or need to move the coins to another cold wallet.

It's useful to know that in older versions, if you send a tansaction and the address is not in the offline sandboxed wallet, the transaction won't be able tobe signed unless you make the wallet aware of the new address (using a gap_limit command).

You can do this by doing either [1]:
Code:
wallet.create_new_address(False)

or

Code:
wallet.storage.put('gap_limit',n)
Where n is the number of your addresses lus the nuber of addresses you want to make. If you have a lot of space, you may want to set this to something like 1000.

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November 29, 2017, 06:59:17 PM
 #23

It seems I've found a bug or glitch in Electrum for Android. I've tried to create watching-only wallets several times. Two of them under Linux and one under Android work perfectly, but another one under Android shows the only transaction to the wallet as "Not verified" despite more than 90 confirmations.

What is the nature of that Android device? How full is it storage wise, how many transactions should it load?

Also, what is the operating system you're running, an old OS may not function as well as a new one (I had it on jellybean and it kept crashing).

Google Nexus 5 with Android 6.0.1. More than 1GB free, 1 transaction only. After a few hours it finally showed the transaction as confirmed. I send another one and it displayed its confirmation progress normally.

It's useful to know that in older versions, if you send a tansaction and the address is not in the offline sandboxed wallet, the transaction won't be able tobe signed unless you make the wallet aware of the new address (using a gap_limit command).

You can do this by doing either [1]:
Code:
wallet.create_new_address(False)

or

Code:
wallet.storage.put('gap_limit',n)
Where n is the number of your addresses lus the nuber of addresses you want to make. If you have a lot of space, you may want to set this to something like 1000.

In case if I send coins to some new addresses created in watching-only wallet and later want to spend them?

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November 29, 2017, 08:38:52 PM
 #24

It seems I've found a bug or glitch in Electrum for Android. I've tried to create watching-only wallets several times. Two of them under Linux and one under Android work perfectly, but another one under Android shows the only transaction to the wallet as "Not verified" despite more than 90 confirmations.

This is a known issue on the PC version. You just restart electrum to make it sync properly. I guess on android you would go to the app view (right most button at the bottom), close and then restart electrum. Alternatively changing the electrum server you are using sometimes does the job.

The cold wallet will not be syncing with servers anyway, because the system will never be online. The only potential problem may be with wallet, seed or signature formats, not with server connections.

There have been bug fixes related to offline signing too since 2.7.9

Also, the issue with networking with servers is generally fairly easy to fix.

The only fix is to install the latest version of electrum on tails. Simply changing servers doesn't do the job.

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November 29, 2017, 10:15:12 PM
 #25

It seems I've found a bug or glitch in Electrum for Android. I've tried to create watching-only wallets several times. Two of them under Linux and one under Android work perfectly, but another one under Android shows the only transaction to the wallet as "Not verified" despite more than 90 confirmations.

This is a known issue on the PC version. You just restart electrum to make it sync properly. I guess on android you would go to the app view (right most button at the bottom), close and then restart electrum. Alternatively changing the electrum server you are using sometimes does the job.

The cold wallet will not be syncing with servers anyway, because the system will never be online. The only potential problem may be with wallet, seed or signature formats, not with server connections.

There have been bug fixes related to offline signing too since 2.7.9

Also, the issue with networking with servers is generally fairly easy to fix.

The only fix is to install the latest version of electrum on tails. Simply changing servers doesn't do the job.

He can do "the only fix" once he connects to the Internet anyway at the point he wants to clear the entire wallet.

How drastic are the signing bugs exactly also? I was using an old version for quite a few months before updating.

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November 30, 2017, 06:48:26 AM
 #26

It seems I've found a bug or glitch in Electrum for Android. I've tried to create watching-only wallets several times. Two of them under Linux and one under Android work perfectly, but another one under Android shows the only transaction to the wallet as "Not verified" despite more than 90 confirmations.

This is a known issue on the PC version. You just restart electrum to make it sync properly. I guess on android you would go to the app view (right most button at the bottom), close and then restart electrum. Alternatively changing the electrum server you are using sometimes does the job.

Restarting did not help, but then it suddenly began to work normally. Well, it's a minor inconvenience.

The cold wallet will not be syncing with servers anyway, because the system will never be online. The only potential problem may be with wallet, seed or signature formats, not with server connections.

There have been bug fixes related to offline signing too since 2.7.9

Also, the issue with networking with servers is generally fairly easy to fix.

The only fix is to install the latest version of electrum on tails. Simply changing servers doesn't do the job.

I suppose it is possible to install the latest version to the Tails permanent storage and it should read the wallet properly, without the need to restore from the seed. Maybe it is better to do it right now.

Another question. Is it possible to export an incoming transaction from the watching-only wallet and import it to the cold wallet to make it show the correct amount without connecting to servers?

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November 30, 2017, 03:18:38 PM
 #27

It seems I've found a bug or glitch in Electrum for Android. I've tried to create watching-only wallets several times. Two of them under Linux and one under Android work perfectly, but another one under Android shows the only transaction to the wallet as "Not verified" despite more than 90 confirmations.

The watch only function of electrum on android seems slightly buggy for me too. I have ~30tx on the addresses I watch and it seems like electrum doesn´t remember that it received that the tx is already confirmed (it has to refresh it on each start). The more tx I get the longer it takes to refresh (show me that the tx is confirmed).

For my 30 tx which are displayed in my watch wallet, it takes ~ 15 seconds to load, maybe you got more tx and close before the app has finished loading.

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A1exander
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November 30, 2017, 07:44:04 PM
 #28

It seems I've found a bug or glitch in Electrum for Android. I've tried to create watching-only wallets several times. Two of them under Linux and one under Android work perfectly, but another one under Android shows the only transaction to the wallet as "Not verified" despite more than 90 confirmations.

The watch only function of electrum on android seems slightly buggy for me too. I have ~30tx on the addresses I watch and it seems like electrum doesn´t remember that it received that the tx is already confirmed (it has to refresh it on each start). The more tx I get the longer it takes to refresh (show me that the tx is confirmed).

For my 30 tx which are displayed in my watch wallet, it takes ~ 15 seconds to load, maybe you got more tx and close before the app has finished loading.

I've encountered that glitch in a wallet with only one transaction.

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A1exander
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November 30, 2017, 07:49:39 PM
 #29

Answering my own questions:

I suppose it is possible to install the latest version to the Tails permanent storage and it should read the wallet properly, without the need to restore from the seed. Maybe it is better to do it right now.

Yes, it works with the latest version (3.0.2), so i suppose there will be no difficulties accessing my coins later, when I need them.

Another question. Is it possible to export an incoming transaction from the watching-only wallet and import it to the cold wallet to make it show the correct amount without connecting to servers?

No, it does not work. It seems that import is for signing only.

I've also tried to sign a message in cold wallet and then to verify it. No problems.

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