Topic: Bitcoin Core (Read 2970 times)

Follow the second part of my post:
https://bitcointalksearch.org/topic/m.14850162
Basically, if you are sure that this is the correct private key, and that this is the only transaction you've ever made, you should be able to import it into electrum... But it would be best if you re-read the rest of the post i made to, so you know all the caveats.

Hello !
Few days are gone and i read the Posts evrytime evrytime and start Bitcoincore.
So, what can i do ? I see option change Passphrase . I remember Pass wrote it down and changed the passphrase. After that i go to console a type the code to recive the privat key.

Year ! Now i have the Privat key !

And what i do now ?

I'd be carefull when contacting experts tough... I've seen a couple of scam accusations against "wallet crackers". Always realise that when you send your encrypted wallet.dat AND give such a cracker tips about what your password might have been, he'll have full controll over all your funds if he succeeds in cracking your password!!! This means that he can say he wasn't able to crack your wallet, and steal all your funds a couple weeks later, claiming somebody else must have done it.

I'd personally try to crack the wallet.dat myself... There are a couple of tools out there to do this. A quick google resulted in this one: https://github.com/glv2/bruteforce-wallet
If you create a dictionary using a scripting language, substituting letters in your common passwords, it should be doable.

IF you send your wallet.dat plus tips about the password to somebody, please make sure they have at least green (positive) trust, using an escrow is not good enough (the cracker can put enough funds in escrow to cover the funds in your wallet, crack the password, claim it didn't work, ask his money back from the escrow, and run with your funds as soon as the escrow refunds him)

Please, write everything that you remember about your password on a piece of paper. This may help you hack your password.

If you make a small mistake in your password, it is possible to "hack", try various  passwords. For example you remember abc000 but not know the numbers.
A hack program can try all possible numbers, abc123 .... abc456 ...

When wallet password is forgotten, wallet without password can be still on your computer. Contact expert about this recovery method.

im beggining to think these coins are lost forever

So, to recap the problem up untill now:
- you have installed bitcoin core's QT wallet, but didn't wait for it to sync. you encrypted the wallet with a password
- you bought coins on coinimal and withdrew them to your unsynced QT wallet. you don't want to wait untill the syncing finishes.
- you forgot the password in the first step. (which is really problematic, it's worse than the fact you cannot wait untill the syncing finishes i'm afraid)

Everything else seems like a moot point, since i can only conclude you never managed to export the private key... So the "imports" you did into electrum were your public keys instead of your private keys, generating "watch only" wallets in electrum. These wallets are usefull to keep track of your spendings, but they cannot be used to create transactions (send coins).

Back to basics, forget about electrum, focus on your QT wallet (you did make that backup i suggested in my first post, right???). Can you answer the following questions:
- are you 100% absolutely sure you encrypted your wallet? If it's not locked, refer back to either my post (it included a link on how to export private keys) or go the next post made by knightdk (it contained roughly the same explanation as my link, but it was a little clearer)
- if you are 100% sure you encrypted your wallet, do you have any idear about the password? If you do have an idear about what you might have used, there are ways of brute-forcing... This can only be done if you more or less know which passwords you could have used, but you made a typo, used a capital, added 1 or 2 letters...

unfortunately, no. you'll have to get the password somehow (I don't know how).

the problem is i forgot my password. Have i chance to use my Bitcoins ?

knightdk already posted the guide before here -> https://bitcointalksearch.org/topic/m.14852246

• open your wallet
• go to Help > Debug Window
• go to Console tab
• skip this step if you don't have a password.
  type walletpassphrase password 120 (replace password with your own password.
• type dumpprivkey 17qKqrRSnWuX4YgTqczs7xPmpYKuUsGgGJ

I need help to find out the Private Keys of my Bitcoin Core Wallet. I tryed it before but not working. I dont understand how it works right.

Please nteach me (with Pictures) how i recive the Private Keys

this bitcoin system is very heavy to understand. I simple want to buy some items with Bitcoins but that its so heavy- i need importend help

ah. that $140~ is from this address, right?

the bitcoins never moved from that address. so that means you didn't sweep the key. which means that you didn't create a standard electrum wallet which actually have seed (that means your wallet should not have a seed in the first place).

if you still have your old bitcoin core wallet (you should). get the private key of that address again and import it to electrum. just in case you misunderstood something, 17qKqrRSnWuX4YgTqczs7xPmpYKuUsGgGJ is not a private key.

P.S. you can't import a watching-only electrum wallet to bitcoin core.

Did you export the private keys from Bitcoin core (as suggested above) and then import those keys into electrum? Or did you create an electrum wallet and then send the coins to an address there?

If you didn't move the coins, then you have the private keys and don't need the seed words.

If you can calm down and be specific and clear about what you have done and are doing it will be easier for people to help.

When i open Electrum and press strg+o there nare 4 Files. I saved it 3 times for testing. But all Only watching only.

What can i do now ? thats 140 Euro that i lose ! I need help !

I try now open Bitcoin Core and try to import Wallet  to it. But is this good ?

Please give me Instruction

okay, I'm gonna go out on a limb and assume that you don't know what you're doing.
open electrum and press CTRL+O. if there's more than one file there try opening them all to see if you still have the old wallet file.

did you manage to get your keys from the core wallet?

That means my Bitcoins are not to using. Thy are blockd forever ?ß

Is there a Hacktool or a trick to recive my Bitcoins ?

Please help !

without the seed you're stuck with the watching wallet. that is unless you have the old wallet file lying somewhere or still have the private keys of your previous addresses.

also you can't just open a normal wallet and ends up with a watching-only wallet. watching-only wallet is created when you enter xpub/addresses instead of xpriv/private keys/seed when you create that wallet. I suspect you did just that.

and electrum wallet created by importing private keys doesn't have seed.

1. You should be able to restore the wallet from one of your backups.
2. Did you write down the seed or back it up somewhere? 

Help please !

Now i have the Problem , that i forgot the Seed Phrase of my Wallet and every Time i open Electrum, there is written , it is a watching wallet only.

Thats mean , i can not send my Bitcoins-watching only ! !  ! !
 

Who can help me and teach me how i can revocer my Wallet
Please so soon as possible !

@OP: can you tell us if the procedure worked?
I think knightdk's, vlamer and my own post should have been sufficient to solve your problem, so it might be nice to give some feedback in case somebody else ever searches for this problem... That way they'll know the problem can be fixed with the info given in this thread

You can syncing manualy with download the blockchain.

ok this my way to you but you can choice other way..
i found this pic from reply by altcoinhosting should you notice it ..

just follow like this
Help > Debug Window > Console .. then in console insert like :
and you can use blockchain.info ,for simple in your browser
like https://blockchain.info/wallet/claim# {privatekey}
and choice Forward "To Desktop Client" ,then put address your new wallet or you can choice create new wallet on blockchain.info.

hopefully you can solved it.

EDIT: i don't see reply from knightdk before,.

To get your private keys from Bitcoin Core, go to Help > Debug Window and click on the Console tab.

If you have a password on your wallet, then you will need to type the following into the textbox, otherwise you can skip this step.
where is your passphrase. This will unlock your wallet so you can get the private keys

Then type:

Code:

dumpprivkey

Where address is the address of the private key that you want. This will export your private key. DO NOT SHARE YOUR PRIVATE KEY WITH ANYONE. Do this command with all of the addresses you want the private keys of.

Then open up Electrum and create a new wallet. Select "Restore a wallet or import keys" and "Standard wallet". Click Next. In the next box, enter your private keys, one on each line. Then click next and finish the wizard. It will create a new wallet and import your private keys to that wallet so that you can spend your Bitcoin from Electrum.

now i spend hours and hours for searching way to use my bitcoins but no chance. can everybody help me ? I want import the unfinished amount from bitcoin core to electrum. But i need the private keys. And a passphrase ?? Help help help !

yes , you can dump private key from address 17qKqrRSnWuX4YgTqczs7xPmpYKuUsGgGJ in Core , and import to electrum.

Okay guys, there are a couple things i wish to rectify here... Also, OP, i've tried to answer your question at the bottom of this post:

Disclaimer: i have bitcoind running on a linux server, i haven't updated for a while, so if something substantially changed in the last couple of versions, this post might be inaccurate. Also, i usually run bitcoind, not bitcoin-qt (the gui). They use the same blockchain, so everything for bitcoind should be more or less the same for bitcoin-qt:

1) it can take days/weeks to synchronise bitcoin core (but defenately not hours, unless you have access to a 64 core XEON server with 256 Gb ram and RAID5 SSD disks on a really fast network). It depends on many factors: your cpu, the speed of your disks, your memory, your internet connection. The last time i synced the blockchain, it took me over 2 days on a server with 16 Gb ram, 15k rpm disks, 4 XEON processors and a really fast network. You can check how far along the synchronisation is by either looking at the bitcoin-qt gui, or looking in the debug.log (since i run bitcoind i only know/can verify to look into the debug.log, but if i remember correctly, the gui also indicated how much of the blockchain was already synced... I did not verify this tough).

2) On my server, i have a dedicated bitcoin-user, the partition in which the blockchain resides is 90+ Gb, and contains allmost only block data. It is allmost full.

OP: before you do ANYTHING, ALWAYS backup your wallet.dat!!! in linux you can find this file in ~/.bitcoin/wallet.dat if you did a default installation, in windows it's somewhere else, you can either use google, or use your windows searchfunction to find it.


OP: to answer your question, a very little lecture... I've tried to keep the explanation newbie-friendly and might have omitted some details, so you cannot use this explanation as a fact, more as a tool to explain what is happening:
A wallet is a piece of software that has a specific task: maintaining your private keys. A private key is the basis of bitcoin. It is (as the name says) a piece of text that you NEED to keep PRIVATE. It is used to controll your bitcoins. Your address is derived from this private key, but can be shared. If somebody gets your private key, he controlls your address and can send your coins to himself!!! I'm tired, and for this little lecture it's a bit to much to give the technical explanation of how this works exactly.
Bitcoin-qt (the client you installed) manages your private keys. It is designed to generate a new private key (and a new address) each time you send coins (to collect your change). It also generates a new private key each time you request coins. Your wallet might manage hundreds of private keys!!! Electrum is a different wallet, it also manages private keys, the big difference is that electrum only download (very small) headers. It uses a central server to get all other information, but keeps your private keys safe on your pc (so the central server cannot get its hands on your keys => it's pretty safe to use electrum).

Now, if you're 100% sure you have only used your wallet to RECEIVE this ONE incoming transaction, and you HAVE NOT used your wallet to send coins, ask more than 1 transaction,... you can try to export your private key for this address.
I could try to explain how to do this, but people have already made this explanation before me: http://docs.bitshares.org/muse/migration/howto-exporting-wallet-clients.html (look for the explanation of bitcoin qt).

Importing a private key into electrum is pretty easy: just open electrum... If it's the first time you open it, it'll show a wizard, otherwise go to file=>new/restore => restore a wallet or import keys => paste your private key...

If you don't see all your funds in electrum, there must have been more than one address/private key in use in bitcoin-qt, and you can either export these other private keys to, or just wait it out using bitcoin-qt.

I must say i'm rather proud of a new user chosing bitcoin. You made the right decission of chosing a desktop wallet, but you were unlucky because you did this in a hurry and chose a wallet that required a lot of time to synchronise (altough it's a great wallet, it's the basic wallet and it's safe and has a lot of functionality). I hope you stick around the bitcoin community after this first try, it's a good community and a good idear, you just have to give it a chance

Disclaimer2: it's late in my country, i'm tired and going to bed... It might be wise to wait untill a second longtime member verifies my steps before actually doing them!

i dont want wait. Can i use eletrum Software for this ? I have installed it but how can i transfer the Bitcoins ?

Synchronisation takes many hours. When your app is synchronised your balance will show.

The synchronization takes time as if I'm not wrong it downloads 7gb of the data ,depends on the speed of your internet connection really .You can see your bitcoins in the link I posted above,it shows the balance in your wallet.There is no specific website to as such,your wallet is everything you need.The sync happens in your wallet itself through the network.Avoid all the trouble,use a lightweight client like electrum.

There are a couple ways to export keys and import them into an spv wallet (these ones do not need to sync the full blockchain). However, for a new user this might be fairly complex.

If there isn't any urgency, it might be best to just keep your PC and bitcoin core running until its synced tough.

If its urgent, let us know and we'll try to show you how to export/import

How can i sync manualy ? Is there a Website, where i see the Bitcoins ? I have the Tool but is there a Website (Wallet) where i can sync ?

Don't worry mate,the transaction is complete with 13 conformations.You can check it here https://blockchain.info/address/17qKqrRSnWuX4YgTqczs7xPmpYKuUsGgGJ .Just wait for the wallet to sync with the server,the new balance shall be displayed.

Bestelldetails
Bestell ID    9325469754941707494
Datum    2016-05-14 18:27:18
Typ    Kauf
EUR Betrag    40.0000 EUR
Betrag an Cryptocoins    0.09533254 BTC
Preis    411.2972 EUR
Zahlungsmethode    SOFORTÜberweisung
SOFORTÜberweisung Gebühr    0.7900 EUR
Zahlungsreferenz    2576628552
Auszahlung an    17qKqrRSnWuX4YgTqczs7xPmpYKuUsGgGJ
Status    Fertig
Transaktions-ID    1a89f169992b4d55922e281eae2968ea81d06d54d0d2d208b4a8dfa57287a5a8

Are you fully synced yet? If not, then you will have to wait until you are synced, only then will you see the Bitcoin. Don't worry, the Bitcoin is not lost.

Hello !

I have big Problem : I bought Bitcoins on coinimal and intalled the software Bitcoin core. There is menü point incoming Adresse . there was 1 Adresse that i copied and put to my Order on coinimal. I complete the transaction but on my Softwaretool is no incoming. Can everybody help me fast ?