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Questions tagged [wallet]

This tag should be used for questions that pertain to wallet software. A wallet software is a piece of software which manages users' keypairs, addresses, and transactions. Wallet software also allow a user to send and receive Bitcoin.

-2
votes
1answer
154 views

Help regarding an online wallet to local wallet transaction? [duplicate]

Possible Duplicate: Why is my client software not receiving bitcoins? I use an online wallet most of the time but that was recently hacked. How I have yet to determine. Anyways, I have since ...
14
votes
2answers
2k views

Is a wallet just a collection of private and public keys?

There is a fundamental bitcoin concept I don't get. Am I correct in that all I "need" to send and receive money are a single address and its associated private key? In other words, can't I just ...
9
votes
4answers
9k views

Is there a known way to export my wallet private key from the “Bitcoin Android” app (com.bitcoinandroid)?

A while back, I installed the Bitcoin Android app and moved 5 BTC on it. Fast forward to now, new phone, new ROM, and the app seems completely unwilling to update its blockchain, meaning I have no way ...
1
vote
1answer
643 views

mac bitcoin wallet question. Private keys?

I don't understand the bitcoin-qt program (mac). Why doesn't it show the private keys for the addresses I've created? Also, why doesn't it let me delete the new addresses? Say I want to send money ...
15
votes
2answers
5k views

What information does a wallet contain?

What information does the Bitcoin wallet file used by the Bitcoin.org client contain? Is the owner's Bitcoin balance written in the wallet.dat file, or does it contain a list of transactions that ...
2
votes
3answers
978 views

0/unconfirmed and cannot find my bitcoin folder (Mac)

I'm running OSX 10.7 and the newest version of Bitcoin-Qt. I put Bitcoin-Qt on my desktop, and found an old wallet.dat that was saved on a USB. I 'opened with' Bitcoin-qt, saw my balance, and tried a ...
3
votes
1answer
172 views

Is there any way to measure relative occurrences of wallet theft over time?

Soon after Bitcoins became valuable enough to be worth stealing, I started seeing news about viruses/malware that steal Bitcoin wallets. Presumably, wallet encryption has reduced the level of this, ...
10
votes
5answers
10k views

How to restore locally a MyWallet backup?

The website blockchain.info has an online wallet system MyWallet which creates backups with a .aes.json extension. While I understand it's a json file encrypted with AES using my passphrase, I'm still ...
12
votes
5answers
937 views

How to instantly give people a pre-filled wallet to introduce them to Bitcoin?

As a Bitcoin evangelist I like to introduce Bitcoin to my friends, and if possible even get them involved by having them own a few coins themselves. The settlement of a personal debt through Bitcoin ...
7
votes
2answers
1k views

Interoperability of Bitcoin clients

Is it possible to operate on the same wallet from multiple devices? If I run, for example Android on a device, and Windows/Linux on another, how do I share the same private key(s) of my wallet between ...
6
votes
1answer
811 views

Bitcoin Explorer - Truth or did i just got my wallet stolen?

So there is this webpage being advertised: http://allseeingbiteye.tk/ And the way it is advertised is: You can be tracked! Be careful of what you pay for. Bitcoin is as insecure and non-anonymous as ...
6
votes
1answer
428 views

What happens when an encrypted wallet runs out of keys?

Say someone wanted to be evil to the main client and set its wallet to contain one key, lock it, and then start mining. After the first block was generated, the client would traditionally create a new ...
2
votes
2answers
256 views

How many addresses does bitcoind use for Bitcoin generation?

When bitcoind is generating Bitcoins, does it change the addresses that are used for receiving the block reward? That is, if I mine two blocks with the same bitcoind wallet.dat, will the same address ...
11
votes
4answers
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 ...
9
votes
2answers
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 ...
2
votes
4answers
836 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 ...
13
votes
4answers
26k 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 ...
6
votes
3answers
15k 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? ...
2
votes
3answers
959 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 ...
15
votes
3answers
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 ...
11
votes
1answer
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 ...
17
votes
1answer
47k 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 ...
16
votes
7answers
2k 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 ...
17
votes
3answers
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." As I ...
8
votes
3answers
910 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 ...
6
votes
1answer
407 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-...
5
votes
1answer
221 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 ...
5
votes
1answer
221 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 ...
3
votes
1answer
478 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 ...
9
votes
1answer
743 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 ...
9
votes
1answer
210 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, ...
-2
votes
1answer
312 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-...
7
votes
1answer
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 ...
8
votes
2answers
1k 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 ...
11
votes
1answer
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 ...
15
votes
2answers
6k views

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

What is the algorithm used for encrypting the wallet.dat file?
11
votes
3answers
563 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. ...
41
votes
7answers
88k 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 ...
1
vote
1answer
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.
17
votes
4answers
5k 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 ...
6
votes
5answers
120 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 ...
7
votes
2answers
567 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 ...
11
votes
2answers
589 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? ...
18
votes
2answers
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 ...
12
votes
2answers
298 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 ...
7
votes
1answer
471 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 ...
39
votes
2answers
5k 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 ...
6
votes
4answers
755 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 ...
45
votes
1answer
6k 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 ...
7
votes
3answers
3k 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 ...