Latest posts of: william3489

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on: June 15, 2017, 07:01:40 AM

Quote from: AGD on June 15, 2017, 06:58:14 AM launch your bitcoin client click on 'help' in the menu bar (top right) click on 'debug window' select the 'console' tab type: walletpassphrase "your walletpassphrase here" 600 type: dumpprivkey [your public key here] this will return the private key, you can copy it now; ensure you clear your clipboard/history afterwards type: walletlock This private key is easy to import in Electrum You have to do this individually for each address? How do I list all the addresses? "Your public key" is the same as your bitcoin payment address right? What does the 600 stand for? The timeout in seconds? 10 min? Thanks.

on: June 14, 2017, 10:18:17 AM

Quote from: ranochigo on June 11, 2017, 11:32:34 AM If your Bitcoin Core client has a HD seed that is generated with it, 0.13.0 onwards, you can dump the xpriv key out and store it safely. You can use the xpriv in various wallets. The main downside being that you cannot change the password of the wallet. Anything below 0.13.0, you have to backup the wallet.dat every 100 transactions. So I can import the xpriv key into Electrum? Thanks.

on: June 11, 2017, 07:24:26 AM

Are there any good "light" (read: doesn't require downloading the blockchain and the space and time associated with that) wallets for mobile or desktop (or both)? That I can quickly and easily import a bitcoin core wallet into? If not, how can I most easily get a file or even a piece of paper that's storing the data I need to be able to quickly spend or trade bitcoins? I want to store bitcoins offline, but if something happens in the market I want to be able to move them, spend them, trade them, etc. quickly. Having to install a fresh bitcoin core client and wait for it to sync is not an option. Thanks.

on: March 15, 2017, 12:11:44 PM

Quote from: DannyHamilton on March 14, 2017, 08:19:42 PM Quote from: william3489 on March 14, 2017, 05:17:18 AM Instead of doing all that could I not... 1) Move my current wallet file out of the Bitcoin data directory. 2) Restart bitcoin creating a new wallet. 3) Create a new address and save it. 4) Back up new wallet and put old wallet back. 5) Send to new wallet. 6) Remove old wallet and replace with new wallet. Instead of doing all that, you could... 1) Change your password. 2) Request a new receiving address from Bitcoin Core. 3) Send your entire Bitcoin Core balance to the new receiving address. What is the practical difference between creating a new wallet and just requesting a new address and sending the coins to myself? Will the program stop you from sending coins to yourself? Some responders obviously think it's better/safer to have a whole new wallet. Is there any real practical difference?

on: March 14, 2017, 05:17:18 AM

Quote from: OmegaStarScream on March 13, 2017, 05:27:32 PM Quote from: william3489 on March 13, 2017, 05:22:29 PM Quote from: OmegaStarScream on March 13, 2017, 05:18:20 PM Yes, they could use the old password as long as they have the old wallet file (If the same private keys are there of course). Meaning what? If I wanted to prevent this I would have to change my password, then create a new bitcoin address and send all the bitcoins to the new address? How does one prevent that most easily? You didn't mention the wallet used here, some of them generate different addresses and still keep the private keys in one wallet.dat file. Again, If you think that someone have access to your old wallet.dat file + he might be able to get the password you should make a new wallet file (and not a new address only) with a new password and send everything there instead of just changing the password. Simple steps to follow (whatever wallet you are using): 1. Install Mycelium in your android. 2. Run your wallet (from PC) and send all funds to your Mycelium. 3. Remove the old wallet and create a new one 4. Send from Mycelium to your new generated wallet on PC. Instead of doing all that could I not... 1) Move my current wallet file out of the Bitcoin data directory. 2) Restart bitcoin creating a new wallet. 3) Create a new address and save it. 4) Back up new wallet and put old wallet back. 5) Send to new wallet. 6) Remove old wallet and replace with new wallet.

on: March 13, 2017, 05:29:48 PM

Quote from: OmegaStarScream on March 13, 2017, 05:27:32 PM You didn't mention the wallet used here, some of them generate different addresses and still keep the private keys in one wallet.dat file. 4C. Bitcoin core. I am not worried, I am just wondering in theory how it works. Kind of sounds like it's a bit pointless to change your wallet password.

on: March 13, 2017, 05:22:29 PM

Quote from: OmegaStarScream on March 13, 2017, 05:18:20 PM Yes, they could use the old password as long as they have the old wallet file (If the same private keys are there of course). Meaning what? If I wanted to prevent this I would have to change my password, then create a new bitcoin address and send all the bitcoins to the new address? How does one prevent that most easily?

on: March 13, 2017, 05:15:43 PM

What happens if I change my wallet password but somebody has a copy of my wallet that was made before I changed my password? Can they still spend my bitcoins with the old password and the old wallet copy?

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