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.

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What kinds of wallets are there?

Can I get short a explanation about cryptocurrency cold/hot wallets? Are there more kinds?
karlito's user avatar
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16 votes
4 answers
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Cannot access my bitcoins because my wallet is still synchronising. What can I do to spend them immediately?

I have purchased bitcoins and have downloaded Bitcoin-QT, but my wallet is taking forever to synchronize to the network. I can't access my wallet because it is still in the sync process. I have the ...
Alex Jackson's user avatar
40 votes
3 answers
49k views

Who gets Bitcoin transaction fees?

Whenever I send bitcoins from one wallet or one exchange to the next there is always a fee. This makes sense with the exchange sites, they are just collecting the fee so they can make a living. What ...
Albert Renshaw's user avatar
52 votes
3 answers
70k views

What's the difference between a wallet and an address?

Bitcoin seems to have the concept of a wallet and an address. Are they the same thing? If not, how do they differ?
Colin Dean's user avatar
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45 votes
2 answers
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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
22 votes
2 answers
19k views

How do I use walletnotify?

I have bitcoin daemon and I want to use the walletnotify option with a json-rpc call. Some of the examples use a "transaction.sh" file for walletnotify. What is it for? What do I have to write in ...
M.R's user avatar
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44 votes
10 answers
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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
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
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31 votes
1 answer
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How is a wallet's balance computed?

I am wondering on how a wallet's balance is computed. Basically, from what I've read I assume that you look back at all transactions involving all the keypairs of a given wallet. Adding up all the ...
marcus's user avatar
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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
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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
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1 answer
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Reg: Watch only Address

I have been given " Watch only Address" by one of my friends. To make the funds credited into my account or to use the BTC, what is way to get the private key? Do we need to pay anything to ...
Lakshmana's user avatar
16 votes
2 answers
7k 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 ...
uray's user avatar
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44 votes
1 answer
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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
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8 votes
3 answers
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At what point is a new wallet known by the Bitcoin network?

I was just showing a deterministic wallet to a friend who asked "At what point is the wallet known to the network?" and I could only guess by saying that it is known only when a transaction is ...
T9b's user avatar
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41 votes
3 answers
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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
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27 votes
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What is the wallet "word seed" that is commonly used in popular wallets clients and what does it do?

I've been using a pretty old version of Multibit classic and recently decided to upgrade. I tried out Multibit HD and Electrum and noticed that both have me set up a wallet with a "word seed"...
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4 votes
1 answer
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Why can I not dump private keys from a descriptor wallet?

I created a new wallet in Bitcoin Core v23.x, as expected it created an empty wallet version 169900 descriptors true format sqlite. It seems it created 4 streams of 1000 keys each. Anyway I told it ...
Mercedes's user avatar
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-1 votes
1 answer
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Recovering the private key from a blockchain wallet address

One of my friends used my wallet to import a funded blockchain wallet to my wallet id. First this wallet is watch-only and I can't spend the bitcoins inside this wallet because I need the private key. ...
Onams's user avatar
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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
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
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6 votes
1 answer
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What options does one have to manage Bitcoins?

I started trading and buying Bitcoins for a while now, and realised: I have multiple wallets and multiple websites where I have bitcoins/litecoins. I think most of the people, including me, want use ...
ohboy21's user avatar
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6 votes
3 answers
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Lost my Bitcoin wallet and have only 11 out of 12 mnemonic seed phrase words. How can I get my Bitcoins?

I am new to the whole Bitcoin thing, and I am having my first attempt almost going sour. I lost where I created my wallet. I have my Bitcoin address and only 11 of my mnemonic seed phrase words (of 12)...
Perry's user avatar
  • 111
30 votes
2 answers
18k views

How can I combine all the tiny amounts I've received to minimise transaction fees, and do I need to?

Important parts in bold, for those who don't want to read the detail! I've received lots of tiny transactions, in amounts sometimes as low as 0.000003BTC. Even though I've also received (relatively) ...
Highly Irregular's user avatar
14 votes
2 answers
5k views

What are output descriptors?

I have heard about output descriptors or wallet descriptors. It is not clear to me what they are. What do they allow me to do? How does that improve my experience using Bitcoin?
Murch's user avatar
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9 votes
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Is there a way to change the wallet.dat location without changing the entire data directory?

I know that Bitcoin supports the -datadir command line option which specifies that the wallet.dat and blockchain should be stored in a custom location rather than %appdata%\roaming\bitcoin but is ...
David Perry's user avatar
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8 votes
3 answers
26k views

Using dumpprivkey to make a paper backup

I'm just getting started with bitcoin and haven't acquired any significant amount yet, but want to feel relatively secure before I do. And at the moment, my fear of losing bitcoins or a device on ...
BlueMonkMN's user avatar
5 votes
1 answer
1k views

a few questions about how HD wallet works

I've read through HD wallet from various resources and have got the basic understanding about it, but am still confused by a few details 1) Each non-hardened public keys (thus addresses) can receive ...
Will Gu's user avatar
  • 368
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
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25 votes
2 answers
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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
18 votes
7 answers
19k views

Is it possible to figure out whether two addresses are in the same wallet?

I'm wondering, if I sent some bitcoins from one of my own addresses to another address in my wallet, will it be possible for someone to figure out that both addresses are in the same wallet? Or can I ...
KoKo's user avatar
  • 509
15 votes
3 answers
5k views

Estate planning: how can I ensure my bitcoins are inheritable?

What are good ways to ensure my bitcoins can be inherited by my family when I die or become permanently incapacitated? I think there are probably two significantly different situations to account for,...
David A. Harding's user avatar
12 votes
2 answers
53k views

If I've lost my wallet, but know my bitcoin receiving address, can I get my bitcoins back?

Although I do have a backed up wallet file, I seem to also have a second bitcoin receiving address, which doesn't seem to correspond to it. Is there a way to recover any coins associated with that ...
jessicah's user avatar
  • 301
10 votes
1 answer
24k views

What does change address mean inside Electrum wallet?

I am bit confused with the change label that is inside Electrum Wallet . Can I receive bitcoin if i give this address which are under change label? What is the difference between Receiving and Change ...
william Henery's user avatar
10 votes
5 answers
17k 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 ...
o0'.'s user avatar
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9 votes
4 answers
11k 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 ...
Metal's user avatar
  • 193
8 votes
3 answers
5k views

What is the best way to recover from an accidental double-spend?

Came across an issue where I was given the message: "Error: The transaction was rejected. This might happen if some of the coins in your wallet were already spent, such as if you used a copy of ...
Dave's user avatar
  • 81
8 votes
2 answers
5k views

Can wallets be shared by different machines?

I have a bitcoin client installed on machine one. Let's say it has 5 coins in there. I then have another machine, with another client on it. Can both machines see the same wallet? Do I have to have a ...
Andrew's user avatar
  • 81
7 votes
3 answers
10k views

How can I export all my private keys using bitcoind?

I know that PyWallet has a -dumpwallet but without using pywallet, how can I export all the addresses and privatekeys with the stock bitcoind? Is there an API command that lists all addresses held by ...
Stephen Gornick's user avatar
6 votes
4 answers
1k views

What is a Bitcoin wallet?

What is a wallet in the context of Bitcoin? What are wallets used for? What relation do wallets have to other concepts such as addresses, private-keys, client-software, and Bitcoin balances?
Murch's user avatar
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5 votes
5 answers
21k views

My client stopped synchronizing, how can I access my wallet?

My wallet has been stuck synchronizing for 21 days, my transfer is in the block chain but I can't get it to sync with my wallet. I've closed firewalls, uninstalled and reinstalled QT with back up and ...
Glenn's user avatar
  • 51
4 votes
1 answer
15k views

How to recover an old wallet.dat file

Back in 2011 when bitcoin started to make the news, I created a wallet and let it run for a bit (no pun intended). It almost fried my computer so I stopped. In the process, I think I remember I mined ...
Nathan Hazout's user avatar
0 votes
1 answer
782 views

Is there something in a debug.log from 2011 that would tell me if there are BTC in an old wallet.dat?

I took an old laptop out of storage today because I recalled trying to mine BTC years ago. I remember giving up quickly because, whatever the UI was, it showed that I had mined 0. I'd like to confirm ...
user4446237's user avatar
23 votes
7 answers
31k views

How do I get the public bitcoin address from a given private key in wallet import format offline?

I have made paper wallets. And I continually send what bitcoins I get to them. I'm paranoid that I've been sending bitcoins to the paper bitcoin addresses where somehow at sometime my saved private ...
user299648's user avatar
20 votes
4 answers
19k views

Moving the Bitcoin folder from AppData

Bitcoin's taking a lot of space on my C drive, and I would like to move it to another drive. I've figured out to do it using symbolic links, but the problem is that my Bitcoin client is currently ...
user avatar
16 votes
3 answers
9k views

Key derivation in HD wallets using the extended private key vs hardened derivation

I am reading the book Mastering Bitcoin and confused about wallet key derivations in Chapter 4. Keys, Addresses, Wallets. The book first mentions a private child key derivation where the child ...
user1's user avatar
  • 161
15 votes
4 answers
21k views

Are all three Bitcoin address types interoperable (legacy, segwit, native segwit)?

is it possible to send transactions back and forth between all 3 address types (legacy, segwit, native segwit-bech32)? Or is one of them not able to send to another?
johnsmiththelird's user avatar
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
12 votes
5 answers
11k views

Recovering bitcoins after the owner's death

My Brother died in April and we believe he had a bitcoin account. Is it possible to find out how to recover/take over his accounts? I know this is a new form of currency but it seems odd there is no ...
caz's user avatar
  • 121
11 votes
4 answers
20k views

Is it possible to use xpub address to monitor balance from previously generated addresses?

I'm trying to find a way where I can view balance of my ledger nano s wallet without always attaching it to computer all the time. I found something called xpub address which allows me to generate ...
Ilja's user avatar
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