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101  Economy / Web Wallets / Re: have btc in used address in blockchain.info wallet can't spend on: December 05, 2019, 05:37:09 PM
i dont know how to add a screenshot but the address location is in my first wallet and in the used address tab where you have to click show.  Like your address shown for your first wallet.  thanks for the help

Are you sure you didn't mix up having several wallets made by blockchain?

It's very easy to get a backup wallet if you remember the e-mail that was created using the wallet. Just go to
https://login.blockchain.com/#/reminder

Enter your e-mail, and they will send you all wallet-id's that was created using that mail.

If you try the password and it does not work, its possible to request a backup of the wallet and then you can run various tools
like btcrecover, hashcat or john the ripper to run variations of your password.

If you still can't find the password google: recover bitcoin wallet , quite a number of services will show up.

Good luck

/KX
102  Bitcoin / Bitcoin Technical Support / Re: Non-spendable Bitcoins and Imported wallet address on: December 05, 2019, 05:31:53 PM
This is my first post so I will make this as short as possible.

For the past 3 weeks, I have been scammed 3 times. The first scam was so-called Romance scam after which I got scammed by recovery company by the name of Cromtontech org https://cromtontech.org/

There is plenty of recovery services that will help you recover funds without paying any upfront fee. Did you even google bitcoin recovery service?

/KX
103  Other / Beginners & Help / Re: BTC FRAUD on: December 01, 2019, 09:41:17 AM
Hi, my exchange accounts has been hacked and all my coins has been changed to BTC than transffered to someones BTC wallet address, I have his BTC wallet address and IP address ( probably used vpn)
 is there any chance to find it out ?!
Who will help me out will be awarded with half of my coins which total amount was more than 1 BTC
Thanks

You probably have a trojan/keylogger installed.

Recommended action, first clean your computer and do a fresh install.

Change all your passwords with variations.

Add 2FA to all future account setup.

File a police report, then contact the exchange with a copy of the police report and request a freeze of the hackers account.

Finally, dont download pirated software as most keyloggers are embedded with games or tools like excel on pirated sites.

If possible, change ISP or use a new VPN, your IP has been exposed and probably sold, you will be targeted again.

/KX
104  Bitcoin / Development & Technical Discussion / Re: 0.1 BTC prize - Find Electrum pass by knowing both unecrypted+encrypted wallet? on: November 30, 2019, 03:14:35 PM


If your goal is detect password and if u accept bruteforce method yes ; i can proof it.

Then why don't you post it here so everyone knows you are not just talking?
If he could do it he would've already done it and ran with the "Large amount of money" that is supposedly stored on the wallet.

alas, he can't do it.

Guys calm down, im waiting rockyou.txt

Edit : seed is already avaible in unencrpyted wallet, i mean no need to money transfer etc, its just password challange.

Edit2 : i tried opencl with 7 gpu bruteforce ; 1024 iteration sha512 decrypt not efficient even if opencl. Also password not in the rockyou.txt list.

I've made a random password similar to something like this: KdR.72.G@$.1eeFug.1@#s!
Just something random that you will never find in any password lists or anything, so don't even try to find it, you'll just lose your time, the whole point was to find someone capable of retrieving the password from the encrypted and decrypted file, not to bruteforce it cause it was pointless.

Again as outlined earlier by other bt members "known plaintext attacks" are not possible Sad

I have looked at the amount again and it's laughing at me back with an evil smile, and I can never access it. I guess it's the power of encryption and the universe.

I am thinking of bruteforcing it more and more, probably the length of the password is not that high, who knows, but I don't have the tools or computers required for the job, might be a dead end eventually.


LATER EDIT: THE PASSWORD TO THE PUZZLE WAS: AFS.ss4.19doEE1!wt1

One can easily verify, but since no one posted it or messaged it to me, I find this lead a dead end. I will go the bruteforce way

You cannot, If the password is anything close to 10+ characters you will not make it in lifetine with todays speed of computers.

/KX
105  Bitcoin / Bitcoin Technical Support / Re: help needed in blockchain analysis on: November 29, 2019, 06:18:31 PM
Hi
I need advise, i would be thankful if someone can give it to me for the following scenario.

I had two wallets
Wallet A
and
Wallet B

Wallet A sent 175 BTC to an address at an exchange
Wallet A then sent the remainder of the coins from Wallet A to Wallet B
Wallet B then sent 275 BTC to an address at an exchange.

I lost Wallet A
I still have Wallet B

I am in court proceeding and I need to show evidence that the change addresses of the 175 BTC (which were sent to that exchange) funded Wallet B.

I need advise which professional company can give me a solid blockchain analysis which will be used in the court of law to support my case.

I appreciate some names of blockchain analysis companies who will work for private individuals. I thank you in advance.

First of all, which jurisdiction? US, ASIA, Europe, there are different laws in different jurisdictions.

If you need a list of good lawyers, then I would say for US you have Kyle Roche at https://rochefreedman.com/kyle-roche they helped Kleiman estate against Craigh Wright. If you are in the UK you BCandLaw link here: https://bcandlaw.com/category/news/ if you want Asia, then its very different if you go China (HK), Korea or Japan.

Analaysis its very easy. Just let me know what tx you have and you can have a chain-link for free...

/KX
106  Economy / Web Wallets / Re: Recovering 33 character private key from legacy blockchain.info wallet on: November 28, 2019, 04:40:31 PM
Yes, i have tried doing using blockchain import tool.

Doesn't recognise the file.

Although the last transaction i remember on the wallet is from 2013, it could have been created even earlier. (2011-2013)

What file name did you use when dropping the file? I know blockchain can behave weird if you dont name the textfile exactly wallet.aes.json

/KX
107  Bitcoin / Bitcoin Technical Support / Re: I have little problem with wallet.dat on: November 27, 2019, 09:35:40 AM
I just want to snoop in and say, this account has been posting similar things for the past two months now. .sys files, .exe files, .dats, .schizophrenia and others. At first, I believed too but now... Just check the post history, he just rabbles over the same thing over and over again.

Don't feed the troll.

I recently had a similar case when the supposed victim sent me a doc file with possible passwords to examine. Contained a trojan.

I would strongly advice anyone to open documents like word, pdf, rar or even mp4 files.

You will get infected with a virus, you will get scammed, you will loose your funds

/KX
108  Bitcoin / Bitcoin Technical Support / Re: Cant send coins. worried if I upgrade I'll lose my wallet. on: November 13, 2019, 04:36:27 AM

So, I've got an old bitcoin thing on my PC.
But the PC is bluescreening and about to die, so I wanted to transfer off the coins because they are worth something.
I setup a new wallet on a different PC and tried transferring 0.01 to test it was working and it didn't.
So I read on on fees. fees didn't really exist before I don't think. you could just transfer.
But the client said the minimum fee was 0.01 which sounds like a lot, so I sent 1.00 with a 0.01 fee.

My address is? 1Afe6EABknu7eePKcz4FihG1x6Fj835RTe
But it looks like there are several receiving addresses.


I would recommend downloading pywallet from github and dumping your keys. Then import them into electrum.

The steps involved would be this:

1) download pywallet from here https://github.com/jackjack-jj/pywallet
2) dump the wallet private keys
3) download electrum from here https://electrum.org/#download
4) import the private keys.

Now you can spend and move your funds from electrum with ease...

If you want to be really safe, disconnect from internet before dumping the keys

Good luck
/KX
109  Bitcoin / Bitcoin Technical Support / Re: Wallet reader on: November 11, 2019, 05:46:38 PM
What is really rather incredible is the cops they have assigned to this do not seem to possess the requisite skill level to be assigned to crypto.

In c++, this is used to access the db, not sure if it would work with the version you are using in bitcoin or not:

STLdb4

See, if some are from the DEA, they choose their own projects they work on.

Seriously, what are you talking about?

The OP asked a way to read wallet files, you are talking about cops and DEA? I hope the mushrooms you took will fade out soon.

OP, if you want to browse a wallet use pywallet and the web tool options, or learn some python and db database, and fork some tools from github and you are good to go

you can find pywallet here: https://github.com/jackjack-jj/pywallet

/KX
110  Bitcoin / Wallet software / Re: Biometric BTC wallet? on: November 11, 2019, 05:42:17 PM
Seriously, cut n paste from zengo website

your security is distributed between your device and ZenGo servers

No ZenGo, Not your coins....
It is not cut and paste, it is the definition of the wallet in my words.

How did you find this wallet?
I saw this thread and searched about Biometric BTC wallet and found these wallets.

So how safe this wallet is?
I am not sure how safe is this wallet, as I have not used these wallets. It was just a suggestion.

So this keyless wallet, what happens if Zengo goes away, where are my keys?
111  Bitcoin / Wallet software / Re: Biometric BTC wallet? on: November 09, 2019, 01:08:03 PM
I know Zengo wallet provides Biometric 3D Face Authentication and D’CENT Biometric hardware wallet provides Fingerprint Biometric Authentication.

  • Zengo is the first Keyless Crypto wallet that as no Private keys. It has distributed security between our wallet and ZenGo servers. Even if the wallet is lost or hacked, our assets are safe.

  • D’CENT Biometric hardware wallet has built in fingerprint scanner which acts as an additional security for accessing wallet.

Seriously, cut n paste from zengo website

your security is distributed between your device and ZenGo servers

No ZenGo, Not your coins....
112  Bitcoin / Development & Technical Discussion / Re: Non smartphone wallet on: November 07, 2019, 08:21:48 PM
Ask them to check if this is compatible: https://play.google.com/store/apps/details?id=de.schildbach.wallet (if they can see an install button then it is)

If not ill put up the installer from my old phone in a couple of hours (when I get in).

You have the source or could point to github?
113  Bitcoin / Development & Technical Discussion / Re: Non smartphone wallet on: November 07, 2019, 08:12:43 PM
I'll have an old copy of the Andreas schildbach wallet if you want a copy of it (it worked on jellybean), you might be able to pull it from the git repo but I'm not sure of the name (might be android-wallet/Android-wallet) but I'm not sure.

Electrum probably won't work on older versions anymore either since old clients can't connect.

That would be awesome, want to make a mini wallet version...
114  Bitcoin / Development & Technical Discussion / Non smartphone wallet on: November 07, 2019, 08:05:39 PM
Anyone experienced with any Android wallet not requiring a new or modern phone ,like 2016 android?

Like connecting to SPV nodes, or using minimum bandwith.

Asking for a clients.

/KX
115  Bitcoin / Bitcoin Technical Support / Re: I forgot password of my wallet.dat file from 2013 "13.8 BTC" on: November 07, 2019, 08:20:09 AM
Just a quick question here, if it takes only a few hours to crack a 6 character password, why are malware not simply targeting the wallet.dat

files and sending them to the hackers when they are found? I think most people are too lazy to use longer passwords, so they will have a field day,

just sitting back and recovering coins from all these wallet.dat files that are send to them.  Huh  I tried this and it was relatively easy to do this

with the manual that was provided here.  Roll Eyes  Luckily my passwords are all a lot longer and more complex and my main hoard is not stored in these

types of wallets.  Grin

There are many malaware looking for private keys, wallet.dat files etc. Hackers are even putting out fake github repos, so when you think you are downloading an updated version of pywallet or btcrecover the code includes a call to execute more malicioue code in the cloud.

I even had a person recently sending a "lost" wallet with possible passwords in a word document that contained a trojan virus.

So its actually out  in the wild, unfortunately...

/KX
116  Bitcoin / Wallet software / Re: Need old BitcoinQT release (from 2011?) on: November 01, 2019, 11:41:47 AM
Quote
1) Make a backup of the wallet.dat file before doing anything.
2) Do #1 again.


I know about backup's is first what i must... in all situations

Quote
Did you try starting Bitcoin Core with the -upgradewallet?
You should also be able to extract the keys using pywallet

Yes, I tried to run the client with all possible variables ... to no avail. Dump keys with all possible applications also does not result in what it should.


Quote
I can probably get you an old working windows build, but since I am just an anonymous person on the internet you really should not trust me....

I am aware of this ... in this situation, however, I have no choice but to be grateful if you can find it!


Quote
here is the various 0.3.2s on github
https://github.com/bitcoin/bitcoin/releases?after=v0.3.22rc6
looks like the zip file has a makefile, and you dont need a gui if you dont want to, mingw, should be able to run it in windows, not sure of the linux tar gz though ....
https://github.com/bitcoin/bitcoin/commit/d787e00a3bb47c513566a8f9baef5b6b3c6d93b4
Yes, I know there are source codes packed from every version. As I mentioned - all-day compilation attempts on both linux and windows were unsuccessful due to the dependencies probably used at that time, which are now either unavailable or collide with anything else. From these old sources I am not able to compile a working version ... this result is the topic created here :-)

Did you try to dump the wallet with pywallet? Its open source on github, you can find it here
https://github.com/jackjack-jj/pywallet

You could also try btcrecover from here:
https://github.com/gurnec/btcrecover

If pywallet makes a correct dump you will know the wallet is not corrupted and it has a valid password.

If pywallet has problems reading it, then most probably you have a damaged file.

It is still possible to dump keys but then its usually a custom job.

Good luck!

/KX
117  Economy / Economics / Re: Can you share Bitcoin percentage in your portfolio? on: November 01, 2019, 11:29:46 AM
This is not important to discuss, but it's for general curiosity. I hold over 100 coins and tokens but most of them found in airdrops so they have near zero value. I only have 11 including BTC that I invested and really care about. I don't want to name all of them but as of today, nearly 66% percent (based on BTC price, not fiat) of my portfolio fills with Bitcoin.
Can you share your percentage of BTC holding? Kindly, only count coins that have value.

I usually change my holdings adjusted to bitcoin dominance, the rest in ETH.

When coming across altcoins I always move them to BTC/ETH or in rare occations to USDT


/KX
118  Bitcoin / Bitcoin Technical Support / Re: generating unlimited address from same wallet ? on: October 31, 2019, 07:59:40 AM
i am making a project and i think it would be a good idea to have a random receive address for each of my app user !


any idea on this ?

i wish to light wallets, but xpub generates only 20 address, how do you work with GAP limit and get new address without requiring a transaction of old ones !

You can easily find many libs on github for this. Many open source wallets lets you download what you want.

/KX
119  Bitcoin / Bitcoin Technical Support / Re: Wrong wallet address recovered with backup mnemonic on: October 30, 2019, 09:35:56 AM
hello,Recover the wallet with the backup mnemonic, it can be restored normally in the electrum, but the recovery is no money, nor the previous address.
how to solve this problem?
Request support!

First of all, did you create the seed with electrum on any other software?

Did you maybe forget the extra word? Some mnemonics use an extra word.

You can try an open source tool here https://iancoleman.io and try with different derivation paths.

Make sure to disconnectfrom the internet before you start entering your mnemonic.

Good luck!

/KX
120  Local / Skandinavisk / Re: Fråga angående cointracking (Hur ska jag göra detta) on: October 30, 2019, 09:31:54 AM
Hej, Jag har Cointracking.info och försöker förstå hur jag ska få mina insättningar och trades att bli inlagda rätt. Jag har använt Api importen och försökt att fixa det som behövs själv men jag vet inte riktigt hur jag ska göra.
Jag har ställt in Cointracking på SEK som min huvud Valuta.
Men när jag fört över pengar från min bank till tex Coinbase så blir ju överföringen i EURO och som jag förstår det så krånglar det till det lite med hur man ska redovisa detta i cointracking.
Är det någon som använder cointracking.info och vet hur man gör en transaktion enligt nedan?

1. Jag gjorde en Banköverföring av : 364.56 EUR Från Min Bank "Swedbank" till "Coinbase".
2.  Jag flyttade mina 364.56 EUR Från Coinbase till mitt Coinbase Pro account.
3. Från Coinbase Pro köpte jag 0,11464188 BTC med mina 364,56 EUR
(4. Min huvudvaluta i cointracking är SEK)


Jag bifogar en printscreen på hur det nu ser ut när jag har importerat från Coinbase API och även lagt till en manuell post där jag för över ("deposit") från swedbank, men jag tror detta är helt fel.
Så hoppas någon kan hjälpa mig då jag börjar bli lite stressad med att bli klar med min deklaration  Undecided

Tack så jättemycket.
Printscreen:


Med bara en transaktion blir det ju mycket fortare att göra detta manuellt, dvs om du inte planerar att trada hårt.

/KX
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