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Author Topic: Recovery Non Spendable BTC  (Read 731 times)
remaub
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April 10, 2019, 02:25:05 AM
Merited by LoyceV (1)
 #1

Greetings Ladies, Gents

I purchased some bitcoin a few years ago using Multibit on a Android Tab. I no longer have access to that tablet. This is what I have.
A Bitcoin address verifiable on Blockchain Explorer.
A backup file that looks like this: bitcoin-wallet-keys-date-bytes but seems to have a null ext.
Also have a file called: date6othernumbers.key.

My question is, since Multibit is no longer supported, what wallet would give me the best chance of recovery.

Pretty much a newbie at this so any/all help would be greatly appreciated.

Thanks
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HCP
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April 10, 2019, 03:15:25 AM
Last edit: April 10, 2019, 04:19:50 AM by HCP
Merited by bones261 (2), LoyceV (2), Jet Cash (2), vapourminer (1), ETFbitcoin (1), bob123 (1)
 #2

I purchased some bitcoin a few years ago using Multibit on a Android Tab. I no longer have access to that tablet. This is what I have.
Are you certain it was MultiBit? As far as I am aware... MultiBit was never available on mobile devices... it was Windows, Linux and MacOSX only.


Quote
A Bitcoin address verifiable on Blockchain Explorer.
A backup file that looks like this: bitcoin-wallet-keys-date-bytes but seems to have a null ext.
Also have a file called: date6othernumbers.key.
Not sure what the "bitcoin-wallet-keys-date-bytes" is... but MultiBit generally created "backup" files like:
multibit-20190410143351.key
multibit-20190410143351.wallet
multibit-20190410143351.wallet.cipher

MultiBit HD created files like:
mbhd.wallet.aes


Quote
My question is, since Multibit is no longer supported, what wallet would give me the best chance of recovery.
Your best bet might be to actually just install an old version of MultiBit (available here: https://multibit.org/release-info/classic/v0.5.19.html) and try to at least open the .key file that you have using that wallet... it may not be able to sync and/or send transactions, but if you could at least open the file, you might be able to then export the keys and then import them into the wallet of your choice.

In MultiBit classic, you use the "tools -> import private keys" menu option, and then the "import from ..." button:


That will allow you to open the .key file... enter the password and click the unlock button... if the password is correct, it should populate the "Number of Keys" an "Replay Date" fields:


Once you have the keys imported... you can use the "tools -> export private keys" option to create a plaintext export file (don't set an export file password, otherwise you won't actually be able to read the generated .export file as it will be encrypted and you'll be back at square one! Wink)



NOTE: I've been trying to simply decrypt the .key file on the commandline using OpenSSL following the information posted by the MultiBit devs... but that doesn't appear to be working Undecided However, when I try to load the .key file into multiBit and use exactly the same password as with OpenSSL, it works perfectly and will import the .key file??!? Huh

That's why I recommend to try reading it directly into MultiBit

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April 10, 2019, 03:01:34 PM
Merited by Jet Cash (2)
 #3

I purchased some bitcoin a few years ago using Multibit on a Android Tab. I no longer have access to that tablet. This is what I have.
Are you certain it was MultiBit? As far as I am aware... MultiBit was never available on mobile devices... it was Windows, Linux and MacOSX only.

It seems he used a fake multibit wallet I found a site where you can see a multibit for android but it looks like a web base bitcoin wallet that converted into an android app and then they rename it to multibit android.

Look at this link https://appsgeyser.io/1095845/MultiBit%20Bitcoin%20Wallet

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April 11, 2019, 12:17:08 AM
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does your bitcoin still on that address? as it seems you're using a 'fake' multibit wallet as others have mentioned. if there are still some bitcoins over there, maybe tried to install the same app to check whether you can import the backup or not (though i'm not sure it's really a good thing to do). i think the files are not readable to multibit too.

another options is to forget about it (if it's not that much), because it's possible that you won't be able to recover it again.

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April 11, 2019, 03:59:28 AM
Merited by Jet Cash (2)
 #5

Hmmmm that fake "multibit" app is indeed a bit concerning... It certainly has no relationship to the "real" multibit, aside from the stolen name and icon Undecided

If the OP did indeed use that fake app, then that is going to make recovery very difficult... as looking at "multibit.bitcoinwallet.com" would indicate that this is a custodial wallet (ie. users simply have an "account" and no access to the private keys... Undecided
Q. What is the storage strategy?
A. Initially customer funds are pooled. We are working on optional individual storage with user accessible private keys, multi-sig withdrawals and insured storage. Our cold storage wallets are distributed in physical vaults throughout the country and require multiple people to access. Our cold storage wallets are not accessible via any system. There is no automatic replenish of the hot wallet from cold storage.

Further more, it would seem that "multibit.bitcoinwallet.com" is actually a user account named "multibit" operating from the bitcoinwallet.com domain...
Q. Where can I find my bitcoin address? 
A. Your bitcoin address is available in three places. Anyone can see your official bitcoin address on your public profile page. Your profile page address is your user name.bitcoinwallet.com (example https://price.bitcoinwallet.com). Your bitcoin address (and any external addresses you added to your account) is also available via API at user name.bitcoinwallet.com/api (example https://price.bitcoinwallet.com/api). Your bitcoin address is also shown on your dashboard when you log in, under the text "Deposit bitcoin".

Which would indicate that the "multibit.bitcoinwallet.com" app... is simply encouraging users to deposit coins into someone elses wallet on bitcoinwallet.com! Undecided


Hopefully the OP was just mistaken... and had been using another Android wallet... or the backup files they have come from the "real" multibit desktop app.

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April 13, 2019, 07:27:59 PM
 #6

Thanks gents for the comments.. I'm still working on it. The multibit wallet that  I downloaded (v0.5.19) is not accepting my bitcoin password. Anu1908.. yes my bits are still at my address. The Android tablet did have a Multibit wallet..  thinking around 2014-15.
If I could just talk to google maybe I could recover my device password but my device is no longer visible in google accounts recovery. If I remember correctly I was able to trade bitcoin with that tablet just by scanning the the other party's QR code without entering any password.
Thanks again
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April 13, 2019, 09:16:31 PM
Merited by joniboini (1)
 #7

The Android tablet did have a Multibit wallet..  thinking around 2014-15.
It certainly wasn't a wallet created or released by the developers of the desktop MultiBit wallet... as I mentioned earlier, it was ONLY released for Windows, Linux and MacOSX desktops.

It's possible you were using the "Bitcoin Wallet for Android"... It was also based on BitcoinJ and used a backup file name format of: "bitcoin-wallet-backup-YYYY-MM-DD", which seems awfully close to what you have.

If you don't have another Android device to try installing that on to test... there are scripts available to decrypt and extract the contents of those wallet file backups.


A backup file that looks like this: bitcoin-wallet-keys-date-bytes but seems to have a null ext.
Also have a file called: date6othernumbers.key.
Are you able to open either of these files with a plain text editor like Notepad (or better, Notepad++ etc)? Huh

Do they look something like this:
Quote
U2FsdGVkX18Qk9IiCGiSC+2BT8u+G1v56wNoU8LuS16+0zNmtY0gGfwKpsZGm9oQP0L8LLyOCNlP
xVqqrG0ZK0AI8SmUgUB6UFg7xCBvgxQKLzMxhM7tBhmFuHsvwLvL
Specifically... are the first characters "U2FsdGVkX"? Huh

NOTE: DO NOT POST THE FULL CONTENTS OF EITHER FILE HERE! I don't want you accidentally pasting plaintext private keys etc! Wink

remaub
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April 17, 2019, 02:16:49 PM
 #8

Yes yes.. I was able to open the file in notepad++ and the plain text starts with U2FsdGVkX. Encouraging. What do I do with it now?  Thanks thanks.
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April 19, 2019, 10:56:18 AM
 #9

If that is the case... Download an old copy of multibit classic from here: https://multibit.org/release-info/classic/v0.5.19.html

Install that and after running it... See if you can open the ".key" file using the instructions I posted above.

If that all works, you should be able to then export the private keys... Create the output with no password and you'll then have a plaintext file with your private keys that you can then import into the wallet of your choice.

remaub
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April 20, 2019, 11:30:37 PM
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It's asking me for a wallet password in addition to the key password. I only have one password and can't unlock the key file. Do I need two passwords? I notice your foo wallet in your instructions doesn't have a password.
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April 20, 2019, 11:49:23 PM
 #11

If the new wallet that was created when you just installed multibit has a password setup (by default, they don't), you need to enter it so the keys can be imported...

However, if the password you are trying to use to unlock the .key file is not working (you get: "Private keys unlock failed" message)... then it doesn't matter if the new wallet has a password or not... As your password for the keyfile is incorrect and the .key file cannot be decrypted. Undecided

Unless you can unlock that .key file, you can't access your private keys from it.

You can always try using "file -> open wallet" and see if the application will read one of the other backup files that you have (ie. Not the .key file)... One of them *might* be a copy of your old wallet file.

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May 10, 2019, 08:40:39 PM
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I have found a copy of my password Kiss I now need to export it out of Multibit and into a supported wallet. Will report when done. Thank you for the replies.
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May 10, 2019, 09:39:24 PM
 #13

Thanks for the update... glad you managed to find the password.




One thing to note, if you attempt to use Electrum (only download from https://www.electrum.org) to import your keys, you will likely need to add a prefix to the private key to get it to import as the correct address, due to Electrum supporting Legacy, Nested SegWit and Native SegWit addresses.

Given the age of the wallet, I'd hazard a guess that your addresses all start with a "1" (since the chances of it being a SegWit (or multiSig) wallet are relatively low, if not zero). If that is indeed the the case and your addresses do start with a "1", you need to use the "p2pkh:" prefix... so when you import to Electrum you would import as: p2pkh:YOUR_PRIVATE_KEY_HERE

for instance:
p2pkh:KxZcY47uGp9a...          -> 1DckmggQM...

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May 11, 2019, 02:13:17 AM
 #14

AFAIK, Electrum by default will derive the P2PKH address from a private key if there's no added prefix.

But you will lose nothing if you add the prefix  Wink
Congratulations by the way.

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May 12, 2019, 03:59:46 PM
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Never trust your memory!  I had my password in a safe place and for further protection I left out 3 digits. Thought I would remember because it was similar to one I used frequently. But not so..  tried for many months until I found the password associated with another program. Eureka!

Now I'm trying to mate the key with the address in Electrum but not much luck. Yes HCP, the address starts with a 1 (one) and the key with a K says Base 58.
When I try to sweep says no input even with p2pkh as a prefix. My address is in there as receiving and watch-only. Think I need to open a new wallet from old Multibit files but not working out. If I use dot wallet - says can' read. Not sure where to go from here.

Thanks so much for your help so far.
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May 12, 2019, 09:14:21 PM
 #16

If it says "no input" when you try and sweep, then that address is likely empty.

Have you checked the balance for that address on a block explorer like blockchain.com?

It might be that you're sweeping the wrong private key.


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May 13, 2019, 01:59:56 AM
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My address and and the six purchases associated with it are definitely there. It's just that I don't know how to mate the two. Address and key.
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May 13, 2019, 02:26:20 AM
 #18

Use "import" not "sweep" to see the addresses derived from those private keys to verify if those were correct and if each has a balance in a blockexplorer.

My address and and the six purchases associated with it are definitely there. It's just that I don't know how to mate the two. Address and key.
The problem is you cannot derive different p2pkh or "1" addresses from a single private key, it will always result to its pair or different "format" like "3" or "bc1" -in simple terms.
If it didn't match, chances that it's the wrong key is high.

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May 13, 2019, 03:39:55 AM
 #19

My address and and the six purchases associated with it are definitely there. It's just that I don't know how to mate the two. Address and key.
If you've spent coins from your address/wallet, then I dare say that your coins are actually in one or more "change" addresses. So, it wouldn't surprise me that your "receiving" address was indeed empty.


Just taking a step back... You used your "recovered" password to import key(s) from the old .key file? Is that correct? If so, MultiBit should have shown you how many keys it actually read from the imported file:


Did it just recover one? Or were there several? If there were several, then you'll likely need to import ALL of them into Electrum to track down your coins.

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May 13, 2019, 08:30:21 PM
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HCP. "You used your "recovered" password to import key(s) from the old .key file? Is that correct?" Yes that is correct. The imported file had only 1 (one) key.
From the main address (starts with a 1) and under the History Tab in Electrum there are six imputs with green checkmarks in front of the date. When I click on one of these they reveal quite a lot of other information. Would the "change address be in there?
I noticed that the original key, that I exported in Multi, now has a long string of char's about 175. The new exported key has about 50 char starts with K.
I keep trying to learn more.
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