Questions tagged [wallet]

A wallet manages a user's private keys. Wallet software is used to send and receive Bitcoin. It also keeps track of the user's transactions, addresses, and balance.

Filter by
Sorted by
Tagged with
11 votes
4 answers
2k views

Is it safe to email an encrypted wallet to myself?

I'd like to setup an automated process to email my encrypted wallet to myself, so that if, for instance, my house burns down, I've got easy access to a recent copy of my wallet stored off-site. I've ...
Jon Garvin's user avatar
9 votes
2 answers
2k views

How secure is calling bitcoind JSON-RPC?

How secure is calling bitcoind through a JSON-RPC? For example, if I run it on one of my computers, and try calling it from another computer (provided neither of them are compromised), can someone ...
ThePiachu's user avatar
  • 43.1k
2 votes
4 answers
872 views

What are the most secure-yet-convenient ways of creating a wallet, that require just remembering a password?

A friend just asked me "where are the 11 BTC I bought from you half a year ago? ... I don't remember where I put them." He formatted his computer a few months ago, and the money is probably lost (all ...
ripper234's user avatar
  • 26.6k
13 votes
4 answers
30k views

Help! I sent coins to my bitcoin wallet before it was properly synced! [duplicate]

I sent coins to my Bitcoin wallet not after installing it, but before it had fully synced! Then I closed and reopened it after sending the coins. It had generated a bitcoin address to send to, but is ...
Mark's user avatar
  • 133
6 votes
3 answers
21k views

How do I unlock, decrypt, Bitcoin wallet?

I'm new to Bitcoins and I downloaded the new beta version with the encrypted wallet. I encrypted my wallet but I have no idea on how to decrypt it. It is locked. How can I unlock/decrypt my wallet? ...
bobanderson's user avatar
2 votes
3 answers
2k views

What mobile wallet software is available for BlackBerry?

Is there a technical reason why there is no mobile wallet software for BlackBerry users? Is it just because the marketplace on BlackBerry is awkward? Or are there other technical problems? Are the ...
Sean Chapman's user avatar
  • 1,740
15 votes
3 answers
8k views

Copy wallet to Electrum or Multibit?

Is there a way to import my wallet from Bitcoin.org's client into the much lighter Multibit or Electrum? The disk space & bandwidth consumption (not exactly well presented to a beginner) quickly ...
Marcos's user avatar
  • 399
11 votes
1 answer
2k views

How safe is it to use a Linux live CD to access my savings wallet?

It's clearly safe to create a savings wallet offline with a live CD, as no data can be sent to an attacker even if the live CD image is compromised (which seems unlikely). However, when it comes to ...
Highly Irregular's user avatar
17 votes
1 answer
48k views

Got the Bitcoin Wallet. How do I transfer money into it?

I've got active connections & there are blocks downloaded but I don't know what to do next. Presumably I need to transfer some money in there so I can buy bitcoins. But how? Any suggestions ...
Kirsteen's user avatar
  • 171
17 votes
7 answers
3k views

What is the safest medium on which to store my wallet/private keys?

What is the safest medium on which to store my wallet/private keys? I avoid eWallets like the plague. I have my wallet on my computer at the moment with the Bitcoin passphrase encryption and I have ...
Sean Chapman's user avatar
  • 1,740
17 votes
4 answers
6k views

What are the risks of using Strongcoin.com as an online wallet?

Strongcoin claims it is "The Safest way to store your Bitcoins. The only Bitcoin e-wallet service that's not vulnerable to security breaches. Your Bitcoin keys are encrypted in the browser." ...
Highly Irregular's user avatar
8 votes
3 answers
958 views

(Why) is it difficult to merge and split wallet.dat?

It is a common question, how to sync a wallet across different devices. As far as I understand, a wallet is just a collection of private keys. Each private key can be uniquely identified using the ...
Jan's user avatar
  • 1,000
6 votes
1 answer
555 views

Read wallet.dat error?

I use BitcoinSharp with C#.net. I try to reading my wallet.dat (dont encrpyt). And some error : "The input stream is not a valid binary format. The starting contents (in bytes) are: 00-00-00-00-01-00-...
Darkwave34's user avatar
5 votes
1 answer
240 views

No Account number or Address in listtransactions for generated blocks

I am in the need (for my app development) of having more information printed with the "listtransactions" of the bitcoind daemon. For blocks generated it shows the account as "" and no bitcoin address ...
Kumala's user avatar
  • 51
5 votes
1 answer
245 views

Where are the receiving and sending address descriptions stored?

Are the sending and receiving address descriptions stored in the wallet file, or as some other file managed by the Bitcoin client app? If I move or copy my wallet to a new installation of the ...
Highly Irregular's user avatar
3 votes
1 answer
527 views

Does Bitcoin wallet encryption also protect my sending and receiving addresses?

Bitcoin wallet encryption makes sure (by encrypting the private keys with a passphrase) that someone who finds your computer or your Dropbox or your backup drive (including wallet.dat) cannot spend ...
Thilo's user avatar
  • 4,759
9 votes
1 answer
1k views

Does the BerkeleyDB-based wallet.dat implementation leak private key data?

I read this little nugget on the bitcoin client bug tracker: the bdb binary log files can also contain sensitive data such as private keys Is that true? Does this mean that even with an encrypted ...
Thilo's user avatar
  • 4,759
9 votes
1 answer
248 views

One dataset for many wallets... how?

It takes a while to download and process the transaction log. Doing that for dozens of wallets would be a big waste. I want to run just one client full time as a log processor. Then for each wallet, ...
joebeans's user avatar
-2 votes
1 answer
350 views

How to build a wallet in my computer? [duplicate]

Possible Duplicate: What software and skills do I need? I have seen on the wiki, there are too many steps (hard steps for a non-geek person) to build a wallet. Is there a easy way for a new non-...
H_7's user avatar
  • 983
8 votes
1 answer
1k views

Confirmations on sent/receive transactions, still have 0 balance

I've tried to transfer Bitcoins from one address to another address, both of which I own. I bought a new computer, so I downloaded the Bitcoin client for OS X, and transfered from the old computer to ...
Brian's user avatar
  • 89
8 votes
2 answers
2k views

Are private keys published to the blockchain after spending coins from a wallet?

Always I spend coins the final balance of the address that is used for transaction will go to zero. The remaining coins comes back as a change to a new address. Will this indicate that the private key ...
Joachim's user avatar
  • 191
11 votes
1 answer
3k views

How to Call JSON-RPC SendToAddress when the Wallet is Encrypted?

I'm using JSON-RPC to send commands to my bitcoind, and it works fine. Now I want to encrypt my wallet. When I've done that, I will need to send the passphrase when calling SendToAddress. How do I do ...
bitboy9999's user avatar
17 votes
2 answers
11k views

How does the Bitcoin client encrypt the wallet.dat file?

What is the algorithm used for encrypting the wallet.dat file?
ThePiachu's user avatar
  • 43.1k
11 votes
3 answers
674 views

What is the absolute minimum amount of information required to have access to a bitcoin balance and or a wallet file?

As far as I gather a wallet can remain offline indefinitely transactions are being sent to it. The network will keep track of the transaction so that the next time it is connected it will catch up. ...
barrymac's user avatar
  • 1,605
47 votes
8 answers
108k views

Where are the user's bitcoins actually stored?

On the person's computer? On bitcoin.org? :) Where does that information reside that tells others and me how much bitcoins I have? I assume it can't be on my PC because I could easily hack the file ...
Alex's user avatar
  • 568
1 vote
1 answer
1k views

OS X 10.7 - Where is Bitcoin data stored? [duplicate]

Possible Duplicate: Is there wallet.dat for OSX? Upgrading my HD; clean install and I want to copy the wallett etc from old hard drive. What do I need to copy? Thanks in advance.
user579's user avatar
  • 19
17 votes
4 answers
10k views

Is there a way to automatically send bitcoins from one wallet to another?

Say I have 2 wallets, an older non-encrypted one and a fresh new encrypted wallet with all new addresses. If I have an address in the older wallet that may receive some bitcoins in the future is there ...
kirian's user avatar
  • 3,289
6 votes
5 answers
131 views

Will it be possible to export a key and only allow it to be imported once?

When the import/export key be implemented I would like to know if it will be possible to export a key with an option like: The exported file can only be imported one time, or that the exported key was ...
Leo's user avatar
  • 311
7 votes
2 answers
2k views

Will fees be charged when importing a key to my wallet?

When the option to import/export keys is implemented, will fees be charged in this kind of transaction? My friend exports a key from their wallet with 2 BTC. My friend sends me this exported key by ...
Leo's user avatar
  • 311
11 votes
2 answers
669 views

Is there a recommended maximum number of transactions any one address should ever receive?

The pool I am with has sent about twenty transactions to one address I gave as a 'send to' addy. Could this one address just go on and on taking more and more of these transactions? A hundred of them? ...
user189's user avatar
  • 303
18 votes
2 answers
1k views

How can I transfer all funds to new keys?

My wallet.dat (bitcoin-3.4) has maybe been left on a work machine, leaving it accessible to the admins there. I would like to transfer all my current funds to a new wallet. How do I do this and how ...
Peter Smit's user avatar
12 votes
2 answers
325 views

Can I force my wallet to only have news keys, post-encryption?

Now that v0.4 of the bitcoin client has encryption I've gone ahead and encrypted the keys in my wallet. But I had previously made backups of my (unencrypted) wallet and those keys are the same keys ...
Stephen Gornick's user avatar
7 votes
1 answer
566 views

How should centralized wallets handle user accounts?

I tried to generalize this question from one I asked on the BitcoinJ development list. I'm working on a project that requires a centralized wallet. From what I gather, these types of services ...
Chris Rico's user avatar
45 votes
2 answers
9k views

What is the coin selection algorithm?

When creating a transaction in the standard client, what is the algorithm used to determine which unspent outputs will be used as inputs? Has this changed since the first version? What different ...
Andrew Jones's user avatar
6 votes
4 answers
803 views

Bitcoin client which doesn't use wallet.dat?

Is it possible to use Bitcoin client without wallet.dat file, by entering your addresses and being able to see the balance, but without the ability to spend bitcoins? I know that it's possible to ...
Domchi's user avatar
  • 505
44 votes
1 answer
10k views

What do the different .dat files contain?

What data do different Bitcoin .dat files contain? How about the other files in the same folder? The wallet.dat file is somewhat documented and there are some ways to convert it to human-readable ...
ThePiachu's user avatar
  • 43.1k
7 votes
3 answers
4k views

How do I read the contents of wallet.dat in C#

I'd like to be able to add, remove, export etc. keypairs from my wallet.dat file. Looking over the source code of pywallet it doesn't look like such a tough task, but of course it's not as simple as ...
David Perry's user avatar
  • 14.4k
25 votes
2 answers
4k views

In order to reduce fees, can I 'consolidate' my wallet by sending the entire balance to a new address in the same wallet?

My balance is currently made up of lots of small amounts I know I'm not going to be using my bitcoin wallet for a while, so I don't care if the consolidation transaction is slow. Would creating this ...
Julian Noble's user avatar
23 votes
2 answers
5k views

How should you backup your wallet?

How often? Is backing it up once enough? Any best practices to storing the backup?
ripper234's user avatar
  • 26.6k
39 votes
5 answers
9k views

What is a deterministic wallet?

It sounds as if it's a process that enables a wallet to be rebuilt from a passphrase, or from several fragments scattered about. Could someone provide a detailed technical explanation?
Gary's user avatar
  • 7,593
13 votes
5 answers
5k views

How can I "redeem" a private key without downloading a client?

Let's say that I have generated some private keys offline and use them for my savings. For my spending money I prefer to use an online wallet instead of downloading the client. Is there any service ...
D.H.'s user avatar
  • 5,307
25 votes
8 answers
3k views

How can a single person operation keep a collection of online wallets secure?

While this question is similar to others about securing wallets, I think it merits a question of it's own. One thing that has dissuaded me in the past from running an online wallet service of some ...
Gary's user avatar
  • 7,593
14 votes
2 answers
370 views

What are the minimum security expectations of an online wallet service?

If you wanted to assess the security of an online wallet service such as a bitcoin bank or ewallet, what would expect to see addressed? Obviously SSL connections, but what about authentication, ...
Gary's user avatar
  • 7,593
41 votes
3 answers
49k views

Can I use my wallet on different computers?

I'm used to synchronize my data on different machines. Depending on the data I use SVN, Dropbox or SSH (Unison). Is this possible with the bitcoin wallet, too?
Thor's user avatar
  • 1,027
28 votes
2 answers
9k views

Is there some way to merge two wallets or to import/export addresses?

I've got one wallet.dat from my laptop and another on my desktop, each containing various (different) receiving addresses that I use pretty often. I'd like to merge them into a single wallet.dat so I ...
David Perry's user avatar
  • 14.4k
33 votes
1 answer
53k views

How can I restore my wallet?

I just purchased a new laptop and I want to decommission my old one. I have a back-up of my wallet.dat file copied to my new PC. What do I need to do to restore it to my Bitcoin (Windows) client? ...
RLH's user avatar
  • 2,172
12 votes
3 answers
1k views

Do wallet stealing viruses exist?

After I install the bitcoin client, what are the risks of browsing the Internet? Can my wallet be stolen? Are there any known viruses/websites etc....?
Buckhead_Comp_Ser_Co's user avatar
21 votes
8 answers
3k views

What wallet / e-wallet is the most convenient for new casual Bitcoin users?

I'd like to make small payments for business purposes through Bitcoin, so would like to know what the easiest method of getting setup to accept a Bitcoin payment is for a regular person, so that I can ...
Amin's user avatar
  • 1,482
9 votes
2 answers
700 views

How to configure the official bitcoin client to conveniently use offline wallets?

This is a follow up question to "How can I keep my wallet secure?" Is there a portable (at least Win32&64/Linux) to configure the official bitcoin client to use only offline wallets to be ...
mbx's user avatar
  • 627
44 votes
10 answers
12k views

How can I keep my wallet secure?

The standard Bitcoin client does not encrypt wallet files, so any malicious user that gains access to this file will be able to transfer all the coins to their own wallet. Furthermore, if I lose the ...
Michael McGowan's user avatar