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Showing 20 of 158 results by SopaXT
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Board Bitcoin Technical Support
Merits 6 from 2 users
Re: Bitcoin WIF misses 7 characters: how to restore checksum offline?
by
SopaXT
on 11/03/2018, 15:35:20 UTC
⭐ Merited by LoyceV (5) ,achow101 (1)
Blockchain.info has been known to have this bug for a long time.
It doesn't check the checksums and lengths of the WIF keys entered and that's quite a big problem.

The bug is hard to reproduce outside of BCI, so my suggestion would be creating a new wallet (remember the usual security precautions, and since that key has already seen BCI, it can be considered compromised), importing the troubled WIF key and exporting it back (I've tried that with an intentionally-corrupted key and it appears to work).
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Topic
Board Bitcoin Technical Support
Merits 1 from 1 user
Re: CPU Mined bitcoins
by
SopaXT
on 02/03/2018, 12:04:05 UTC
⭐ Merited by OgNasty (1)
Virtually no online wallets existed back then, so are you sure you stored your coins online?
You can try searching the hard drives for files named "wallet.dat", since it's most likely that you have used Bitcoin Core back then.
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Topic
Board Bitcoin Technical Support
Re: Lost bitcoins
by
SopaXT
on 19/02/2018, 19:30:52 UTC
DarkStar_ is right, you have some balance on the forked chains (you can sell them off too!)
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Topic
Board Bitcoin Technical Support
Re: Need to recover keys . I have found prefix for xprv and xpub. 4/2010
by
SopaXT
on 19/02/2018, 10:35:24 UTC
AFAIK, a wallet from 2010 can't contain any xpub / xprv keys, because they weren't introduced back then.
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Topic
Board Bitcoin Technical Support
Merits 1 from 1 user
Re: What programs are available to recover keys from Linux version 0.2
by
SopaXT
on 31/01/2018, 16:09:43 UTC
⭐ Merited by LeGaulois (1)
pywallet can dump the private keys out of an old wallet.
Also, I wrote a script to dump the private keys out of an unencrypted wallet.dat in a quick, straightforward way: https://gist.github.com/SopaXorzTaker/e5256e9ecdce740f182093f72f05b8d2.
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Topic
Board Bitcoin Technical Support
Re: Used file recovery services to find BTC wallet ( multibit classic)NEED HELP ASAP
by
SopaXT
on 29/01/2018, 15:34:51 UTC
Can you access / recover those .wallet files?
If yes, then it's possible to recover your MultiBit wallet.
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Topic
Board Bitcoin Technical Support
Re: URGENT - Is my Ledger damaged? Big tip for successful retrieval of my BTC
by
SopaXT
on 15/01/2018, 13:20:14 UTC
Quote from: RDH40 on January 14, 2018, 02:16:51 PM
Quote from: Xynerise on January 14, 2018, 10:36:48 AM
Maybe it's a ledger problem?
I don't think it is a Ledger problem as the LTC worked fine and shows up.
Why not import your seed into another wallet client and see if your bit coin shows up?
This is an option I may have to consider by purchasing a new one!

Or you could run Ian Coleman's tool and tweak the derivation path to search for the address.
When you say 'tweak' the derivation path - I would I do this?

Try choosing "Derivation Path" -> "BIP141" -> "P2WPKH nested in P2SH".
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Topic
Board Bitcoin Technical Support
Re: URGENT - Is my Ledger damaged? Big tip for successful retrieval of my BTC
by
SopaXT
on 14/01/2018, 13:48:37 UTC
Quote from: RDH40 on January 13, 2018, 08:06:45 PM
Quote from: SopaXT on January 13, 2018, 07:22:29 PM
Do you have your 24-word seed that your Ledger made you write down?
Hi SopaXT - Yes I do have my 24-word seed written down from my Ledger.
What do you suggest? A Ledger reset/reconfiguration? Any help and assistance would be great appreciated.

Try resetting and re-initializing your Ledger from that seed (however, as you seem to have a lot of BTC, I'd recommend getting a new one for that instead of resetting the old one, just in case).
Also, do you remember what account did you generate that address from (it's possible that you're just using a different one)?

e.g. "Accounts > My Account", etc?
Does it say the same right now?
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Topic
Board Bitcoin Technical Support
Re: URGENT - Is my Ledger damaged? Big tip for successful retrieval of my BTC
by
SopaXT
on 13/01/2018, 19:22:29 UTC
Do you have your 24-word seed that your Ledger made you write down?
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Topic
Board Bitcoin Technical Support
Re: URGENT - Is my Ledger damaged? Big tip for successful retrieval of my BTC
by
SopaXT
on 12/01/2018, 16:33:08 UTC
Do you have your 24 words (that were given to you when you first turned your Ledger on) written down?
If that is the case, then you have nothing to worry about when resetting your wallet, as all of your addresses are generated from that (you might need to create a new LTC account afterwards, though).

It's highly unlikely that you'll need to reset it, though.
Are you sure that you're using the correct BTC account (there can be multiple accounts with multiple addresses generated from them, all from a single seed)?
Does the address ever show up in your wallet right now?

Also, it's possible that you're using the old Litecoin address format (do your Litecoin addresses start with an M or a 3?).
If you have sent Bitcoin to a Litecoin SegWit address, it's still possible to recover that (although rather quirky).
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Topic
Board Bitcoin Technical Support
Re: Technical Languaje
by
SopaXT
on 05/01/2018, 20:37:31 UTC
The "public key" and "private key" are proper cryptographical names.

However, addresses are often confused with public keys. An address is actually a hash of the public key, normally Base58-encoded.
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Topic
Board Bitcoin Technical Support
Re: Lost 3 out of 24 words of my passphrase. Bruteforce possible?
by
SopaXT
on 05/01/2018, 15:09:27 UTC
First of all, do you have them in order (first, second, third...)?

If yes, then the problem lies in simply brute-forcing the 3 words, which is about 8 billion tries.
This number may look scary, but in fact it's doable even on an average PC in a few days at most.

How exactly did you lose the last words?
If you still have some parts of them left, this will make the brute-forcing process easier by several orders of magnitude.
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Topic
Board Bitcoin Technical Support
Re: importing priv keys to segwit supported wallet
by
SopaXT
on 05/01/2018, 10:52:43 UTC
Your SegWit-supporting wallet can make a SegWit transaction afterwards, and the fee for that is going to be lower.
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Topic
Board Project Development
Re: [coinb.in] Open Source, Multi Signature, HD Wallet and more!
by
SopaXT
on 05/01/2018, 08:15:13 UTC
Quote from: hamburger on December 30, 2017, 01:45:06 AM
Hi,

I have used
Code:
coinjs.pub = 0x1E;
for my Address to start with D - DKo6y9Cfuwu8imVUz2MWbAeYXHtmgYkFFF the wallet that I use to verify the address confirm that the address is a valid address.

What should I replace
Code:
coinjs.priv = 0x80;
with in order for my Private key (WIF key) to start with the capital letter Q - the wallet return an invalid private key message

Tnx,

H.

If you're developing an altcoin, asking this is unacceptable - you should know better!
The correct private key version is probably
Code:
0x9e
, according to the source code (address version + 128).
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Topic
Board Bitcoin Technical Support
Re: 96 character privkey help will compensate
by
SopaXT
on 03/01/2018, 10:01:35 UTC
Tools such as btcrecover (to brute-force your wallet password) support raw encrypted keys such as yours.

Do you remember what the password could be?
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Topic
Board Bitcoin Technical Support
Re: 96 character privkey help will compensate
by
SopaXT
on 02/01/2018, 06:47:32 UTC
It's a wallet.dat dump, such as that created by pywallet.
It can be used to recover the wallet file, but I'd also recommend looking for the original wallet.dat.
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Topic
Board Bitcoin Technical Support
Re: Old corrupt wallet.dat from when I mined in 2009-2010
by
SopaXT
on 01/01/2018, 16:15:54 UTC
On other threads here, it's suggested to run Bitcoin Core with the -upgradewallet option.

Seems like that it needs help to understand the old wallet formats now.

Also, running an old version won't help - it isn't going to synchronize with the network.
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Topic
Board Bitcoin Technical Support
Re: Bitcoin private key missing a character help!
by
SopaXT
on 01/01/2018, 08:47:21 UTC
Quote from: lostkey606 on December 31, 2017, 11:50:03 AM
Hi all,

I saw an older post and someone had the same problem like mine. Basically I set up a paper wallet and wrote down the private key, now I've missed out a character I used bitaddress.org. Private Key WIF Compressed 52 characters base58, my key starts with a K. Now I thought that I only missed out a character, but I ran a script and got 3162 combinations that gave an extra character inputted them into blockchain and none worked.
So now I am missing a character and somewhere along the line I have made a very small error (that could be accidentally making one of letters caps instead of noncap, looking at my key there could be maximum possibility of 6 characters that could be noncap or cap that is worst case scenario) I'm pretty sure that 90% of this key is correct as I skimmed through it after writing it down also my bitcoin address is correct. If there is a way of working out the key based on my partial private key and my bitcoin address that would be great. I want to try another 3162 combinations is there a way of automatically checking these keys instead of copying and pasting into blockchain? If the key is found a reward will be given. Thanks for the help.

Do you have a QR code printed on your paper wallet or did you write it down manually?
This tool can help finding the typo in the key automatically: https://github.com/hexafraction/wif-repair.
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Topic
Board Bitcoin Technical Support
Re: Old corrupt wallet.dat from when I mined in 2009-2010
by
SopaXT
on 30/12/2017, 15:03:08 UTC
If your wallet is from 2009-2010, then it can't be encrypted, because the option to encrypt the wallet was added to Bitcoin much later.
You can try using https://github.com/jackjack-jj/pywallet (pywallet) or my utility (linked below) to try dumping the private keys out of it (which can be imported into another wallet).

You can also try a tool I wrote: https://gist.github.com/SopaXorzTaker/e5256e9ecdce740f182093f72f05b8d2 (based on pywallet), which is easier to use.
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Topic
Board Bitcoin Technical Support
Re: I do know my bitcoin wallet. And probably remember the password
by
SopaXT
on 26/12/2017, 18:43:02 UTC
You can try installing Bitcoin Core and copying the wallet.dat file into your AppData\Roaming\Bitcoin directory (if you're on Windows).
You'll probably need to sync the client (which requires downloading 100 GB of data), and then you'll be able to access your coins.