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Author Topic: Electrum need backup?  (Read 1662 times)
Allphonic (OP)
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August 30, 2014, 05:03:23 PM
 #1

I installed electrum and I saw the passphrase stuff at the beginning.
Now, if I lose my computer and install electrum on another one, will, by simply typing this passphrase, restore ALL my wallets, including extra addresses generated after the first setup?
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byt411
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August 30, 2014, 05:05:49 PM
 #2

I installed electrum and I saw the passphrase stuff at the beginning.
Now, if I lose my computer and install electrum on another one, will, by simply typing this passphrase, restore ALL my wallets, including extra addresses generated after the first setup?

It's a seed, and yes, by entering the seed, you can restore everything.
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August 30, 2014, 06:06:36 PM
 #3

I installed electrum and I saw the passphrase stuff at the beginning.
Now, if I lose my computer and install electrum on another one, will, by simply typing this passphrase, restore ALL my wallets, including extra addresses generated after the first setup?

It's a seed, and yes, by entering the seed, you can restore everything.

That's right. Even if all Electrum servers in the world go down!
byt411
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August 30, 2014, 06:47:52 PM
 #4

I installed electrum and I saw the passphrase stuff at the beginning.
Now, if I lose my computer and install electrum on another one, will, by simply typing this passphrase, restore ALL my wallets, including extra addresses generated after the first setup?

It's a seed, and yes, by entering the seed, you can restore everything.

That's right. Even if all Electrum servers in the world go down!

I dunno if that was supposed to be ironic, but you can still set up your own Electrum server if none are available.
dabura667
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August 31, 2014, 02:50:58 AM
 #5

I installed electrum and I saw the passphrase stuff at the beginning.
Now, if I lose my computer and install electrum on another one, will, by simply typing this passphrase, restore ALL my wallets, including extra addresses generated after the first setup?

It's a seed, and yes, by entering the seed, you can restore everything.

That's right. Even if all Electrum servers in the world go down!

I dunno if that was supposed to be ironic, but you can still set up your own Electrum server if none are available.

Hint: You don't need Electrum servers at all to restore your Electrum wallet.

My Tip Address:
1DXcHTJS2DJ3xDoxw22wCt11FeAsgfzdBU
Allphonic (OP)
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August 31, 2014, 02:22:17 PM
 #6

how can it know which address I generated?
Maybe because with that seed, every generated address is the subsequential?
like 1xxxxxxxa; 1xxxxxxxxb and so on?

I ask because I'm going to store some savings, and I'm scared that in a disaster event I'm going to lose everything...  Undecided
byt411
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August 31, 2014, 02:24:08 PM
 #7

how can it know which address I generated?
Maybe because with that seed, every generated address is the subsequential?
like 1xxxxxxxa; 1xxxxxxxxb and so on?

I ask because I'm going to store some savings, and I'm scared that in a disaster event I'm going to lose everything...  Undecided

All of the used and generated addresses can be restored from the Electrum seed. There's some sort of a one-way algorithm to work it out, but I have no idea how.
dabura667
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August 31, 2014, 03:03:44 PM
 #8

how can it know which address I generated?
Maybe because with that seed, every generated address is the subsequential?
like 1xxxxxxxa; 1xxxxxxxxb and so on?

I ask because I'm going to store some savings, and I'm scared that in a disaster event I'm going to lose everything...  Undecided

You won't lose everything.

As long as you have those 12 words.

Using my 12 words I could calculate the first 100 addresses (along with their WIF private keys) of my wallet for you in about 1 minute using commands in a Python console WITHOUT even touching Electrum OR the internet.

It's all just math.

1 + 5 is always 6

Your 12 words will always generate the same addresses in the same order.

My Tip Address:
1DXcHTJS2DJ3xDoxw22wCt11FeAsgfzdBU
Abdussamad
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August 31, 2014, 03:46:35 PM
 #9

You should backup the wallet file as well because it contains labels for transactions and addresses. These are not restored from seed. An alternative approach is to use the label sync plugin. Activate that in tools > plugins and follow on-screen instructions.

That's right. Even if all Electrum servers in the world go down!

I dunno if that was supposed to be ironic, but you can still set up your own Electrum server if none are available.

I don't think he was being sarcastic. He knows what he's talking about:

https://bitcointalk.org/index.php?topic=73651.0
InwardContour
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September 03, 2014, 07:23:54 PM
 #10

how can it know which address I generated?
Maybe because with that seed, every generated address is the subsequential?
like 1xxxxxxxa; 1xxxxxxxxb and so on?

I ask because I'm going to store some savings, and I'm scared that in a disaster event I'm going to lose everything...  Undecided

You won't lose everything.

As long as you have those 12 words.

Using my 12 words I could calculate the first 100 addresses (along with their WIF private keys) of my wallet for you in about 1 minute using commands in a Python console WITHOUT even touching Electrum OR the internet.

It's all just math.

1 + 5 is always 6

Your 12 words will always generate the same addresses in the same order.

I'm new with electrum so this may be a stupid question but:
if I have received money from more than 100 addresses, does the seed changes or it is always the same?
byt411
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September 03, 2014, 08:24:01 PM
 #11

how can it know which address I generated?
Maybe because with that seed, every generated address is the subsequential?
like 1xxxxxxxa; 1xxxxxxxxb and so on?

I ask because I'm going to store some savings, and I'm scared that in a disaster event I'm going to lose everything...  Undecided

You won't lose everything.

As long as you have those 12 words.

Using my 12 words I could calculate the first 100 addresses (along with their WIF private keys) of my wallet for you in about 1 minute using commands in a Python console WITHOUT even touching Electrum OR the internet.

It's all just math.

1 + 5 is always 6

Your 12 words will always generate the same addresses in the same order.

I'm new with electrum so this may be a stupid question but:
if I have received money from more than 100 addresses, does the seed changes or it is always the same?

The seed never changes unless you generate a new wallet. All addresses generated by Electrum can be recovered from the Seed. Imported addresses cannot be recovered.
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