Private keys are for signing transactions.

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23 views

Can unrelated people know the private key of a multisig address?

After a multisig address is created, can one of the private keys of that address be known by an unrelated person and the security of that address still remain uncompromised? My understanding being ...
2
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0answers
17 views

How do I extract my private keys from a protobuf wallet?

Recent changes to Andreas Schildbach's Bitcoin client for Android have removed the option to export private keys. This has been replaced by an option to back up the entire wallet. Unfortunately, the ...
2
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1answer
23 views

Exporting Private Keys for wallet in Multibit

My computer just got formatted, and so did my wallet. I had imported the private keys from my wallet a week back. Can I just load that again into multibit, and get my bitcoins back? I have also had ...
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1answer
42 views

If I have only the private key from a multibit private key export, how can I use the bitcoin later elsewhere?

In multibit, you can export the private keys from a wallet into a basic text document (*.key). It will look something like this: # KEEP YOUR PRIVATE KEYS SAFE ! # Anyone who can read this file can ...
2
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1answer
35 views

Multibit saving after transaction - what do wallet private key backups look like, if they exist?

I sent some bitcoins from a multibit wallet to another wallet. I recently realized that the change not sent in this transaction is sent to a new address. This means I didn't back up the key of this ...
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2answers
52 views

Using paper based public/private keys in bitcoin-qt [duplicate]

If I only have a public key string and a private key string written on a sheet of paper. How do I use those in bitcoin-qt? If this can be added to bitcoin-qt, will it eventually show me how much ...
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0answers
10 views

Are transactions verified/checked also by full nodes, or only by miners? [duplicate]

Suppose I create an illegal transaction. Of course the default client won't create or sign such a tx to begin with, but for argument's sake let's say I rigged my software (built a modified version). ...
1
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1answer
31 views

One private key in different locations?

Can I still use my key pair to receive and send bitcoins, even if I imported the private key in another location? I wondered about this, when I planned to import a backup of my online wallet in a ...
0
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1answer
59 views

ELI5: How do I import keys from blockchain.info backup into MultiBit 0.5.18

So, blockchain.info is holding my account hostage. My phone with my 2FA was lost (and remotely wiped) and they refuse to remove the 2FA on my account to get access. I have a recent backup of my keys ...
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0answers
64 views

How do you do point multiplication in bitcoin associated with the ecdsa algorithm?

I have posted a similar question recently, but not this specific. I have found that a lot may ride on the idea of "point multiplication" yet all explanations I have found lack explanation or are in ...
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0answers
22 views

How do I validate a WIF private key for Peercoin?

I have a private key for a peercoin address, generated as follows: Go to peeraddress.org Click on Wallet Details Fill in 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaa' in the 'private key field' Copy the 'Private ...
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3answers
74 views

Is it possible generate three public key( address ) by only one private key?

I hear that each address has one private key. Is it possible generate three public key address by only one private key?
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1answer
46 views

CoinPunk questions with private base58 encoded private keys?

I am extemely sorry if this not the right place... but thought I could maybe get some pointers? Well, basically, if you look at this: ...
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0answers
61 views

Import private keys from Multibit into Armory?

I am attempting to import a private key that was made in Multibit, into Armory. I am able to restore this key into other wallets, such as the Android Bitcoin Wallet, Mycelium and Electrum, but when I ...
2
votes
3answers
65 views

How do I flush the keypool?

After the heartbleed vulnerability, I'm concerned that my private keys could have been compromised. I want to send all my coins to a new address with a freshly generated key. However, if I just ask ...
2
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2answers
36 views

Generating addresses on the fly or pre-generate and store public key?

When running a service that needed a bitcoin address, would it be better to generate a new address to use at that moment and store the private key on your server, or would it be better to pre-generate ...
1
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0answers
60 views

If I accidentally delete an address with funds

If the address is deleted (while using an online provider like CoinJar), does that mean the coins are lost for good? Or all public/private keys are still held by the company and the address deleted ...
1
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1answer
85 views

How to import say 1million bitcoin privkeys in bitcoind / bitcoin-qt?

I was wondering if there are ways to automate / mass private key import into the bitcoin client. Anyone knows of a command or has a script or an idea to share? thanks.
1
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1answer
198 views

What happens if I delete wallet.dat?

I have this question, say I have my coins in my local wallet and 1 of 2 things can happen, say I somehow delete the wallet.dat file or some kind of malware deletes the file. I have the password ...
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0answers
88 views

Decentralised escrow / distributed private key generation

Issue Hi As many others i am curious in addressing distributed escrow problem (not just for bitcoin). As it stands now there are no decentralised escrows. All escrow services are based on trust in ...
0
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1answer
53 views

Import private key on multiple computers

I decided to make some custom addresses for personal use and I have two computers running bitcoin clients. I imported the private key of the wallet I generated to the wrong computer and then I ...
1
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0answers
41 views

Converting multiple btc private keys in standard text format to WIP

Ok, going crazy! I have a file that lists my old private keys (2011) (not original wallet.dat, just keys txt file). I need to convert each of these keys (not one at a time) into either a WIP key ...
2
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2answers
124 views

What if the brain wallet is just a memorable private key itself?

A brain wallet usually applies a hash function on a passphrase to derive the private key. But what if the private key itself is memorable and we just use the private key as the brain wallet? For ...
0
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1answer
44 views

What is my private key?

No computer at the moment, so I have Wallets at two independent websites. I sent millibits from one wallet to the other. I hear that you have to use your private key to do that. So, I guess that ...
2
votes
3answers
213 views

What happens if I send bitcoins to my private key instead of my actual bitcoin address?

I recently used the website https://www.bitbrothersllc.com/Bitbrothersllc/Welcome.html to obtain my bitcoins, but when I was asked what address to send my coins to, I accidentally put down my wallet's ...
0
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1answer
410 views

Security and recover issues in blockchain.info wallet

I have a wallet in blockchain.info. I'm quite new to bitcoin and would be happy if someone would explain me : (1) what should I do in order to save my bitcoins if something happens to ...
0
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1answer
118 views

signrawtransaction - Which private key from BitAddress.org?

I am trying to do multisignature addresses and when it comes time to spend the funds, I am getting stuck. If I create a 2 of 3 multisignature address using 3 public keys that I generate locally, then ...
1
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1answer
73 views

Trying to import a private key into bitcoind

I am in a special situation where I need to import my private key credentials and basically restore a wallet to bitcoind. bitcoind is running and I do have an rpc user/pass and server=1 in the ...
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2answers
132 views

Do I need to wait for blockchain to complete to use private key elsewhere?

As the title says: My blockchain sync still needs to sync 56 weeks, but I want to export my private keys from the bitcoin qt wallet to blockchain.info. Is it possible to do that without waiting for ...
2
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2answers
116 views

Is it safe not to record private keys for paper wallets?

That may sound like a silly question, but if I have created my keys using a passphrase in “brain wallet” at bitaddress.org, why do I need to record the private key, if I can recreate it at any time by ...
2
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1answer
145 views

Need sample compressed and uncompressed Public / Private key pairs for BigInteger

I am testing a different version of BigInteger that has different endian formats and the native implementation likes to add or remove zeros from the final output. Can anyone provide some sample ...
3
votes
2answers
243 views

What encoding or format is the private key in Dumpprivkey?

I'm trying to use the results of Dumpprivkey to sign a message outside of the QT client, however I'm either having a problem signing or extracting the real value of the key. What encoding, endian, or ...
3
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0answers
388 views

How to dump all of addresses from wallet.dat for other alt-coins?

I'm on binarycoin now, with solo mining. Luck smile to me. I'm found 5 blocks. It is 100.0 binarycoins. I'm trying to use "aggressive" speed-up, my daemon compiled with -O3. After last block I ...
4
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1answer
1k views

Import private key to coinbase?

Is there a way to import a private key that I have been using in bitcoin-qt to my coinbase wallet?
2
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3answers
172 views

How do I own my bitcoin address?

I am a bit new to BTC. I bought few via Virwox and it tells me I have an address. People can send money in BTC to that address. I also downloaded MultiBit on my Mac and I got another address. But ...
2
votes
1answer
101 views

Is it possible to retrieve bitcoins from a Bitcoin address and possibly a private key?

While mucking about with Bitcoin a couple years ago, I setup a Bitcoin address and added a couple bitcoins. I have the Bitcoin address and possibly a private key, but I cant remember how or where I ...
0
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1answer
94 views

How is the wallet balance split across keys?

I suppose it's advisable to use a new key frequently for bitcoin receive address for anonymity. If each received amount goes to a new key, will my wallet size become unmanageable if I receive a number ...
0
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1answer
55 views

How can I copy an address (with the private key) using JSON-RPC?

I need to be able to create an address in 2 different Bitcoin-qt instances (actually 2 different PCs). I can create it using "getnewaddress" on the first one but how can I import it to the second one ...
2
votes
1answer
65 views

Is there any way to “revoke” a bitcoin address?

Given e.g. one lost the private key to a specific bitcoin address, is there any way to make sure no more bitcoins can be transferred to it since it effectively became a bitcoin-furnace?
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0answers
76 views

Serious blockchain.info balance bug?

I noticed after sending a small amount from my blockchain.info wallet, the balance suddenly went to zero! I looked at the transaction on blockchain.info and it seemed normal enough, with what should ...
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1answer
902 views

How can I get/create a private key for my wallet?

How can I get or create a private key for my wallet?
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1answer
309 views

Why can the same 12 words produce different seeds in an Electrum wallet file?

I was looking through an Electrum wallet file (from Electrum 1.9.6 for Windows if it matters) trying to understand what information was contained in it, and I couldn't initially figure out exactly ...
0
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1answer
323 views

Public key from private key generation problem

I met some problems, when I was trying to write function able to create Bitcoin public key from private key. I was using the tutorial: ...
3
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0answers
248 views

JSON-RPC signrawtransaction returns false when using private keys

I've been working with BitcoinLib testing various parameters on the signrawtransaction rpc call. It's been mostly successful, however there seems to be a persisting problem when using only private ...
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2answers
276 views

How to find out the ECDSA private key perfix version for Altcoins?

I want to create a paperwallet for an altcoin (Protoshares). I know the public key version byte is 0x38 (56) and the addresses start with P... But how do I find out the ECDSA private key prefix? For ...
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2answers
118 views

Android Bitcoin Wallet - change addresses and key backup

I've had the Android bitcoin walllet for some time. When I installed it I was assigned some public address/key. I have made various transactions in and out of the wallet but as fas as I can telll the ...
1
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2answers
2k views

How are public and private keys related to the wallet?

I understand that all the Bitcoin protocol is based on an asymmetric cryptography. A user gets 2 keys (public and private). How do these keys connect to the Bitcoins? How are the keys are related ...
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1answer
434 views

What is the current state of BIP 38 (encrypted paper wallet) integration with cell phone wallets?

Given current implementations, is there a wallet that I can use to scan a private key, then enter in the password as a PIN, and the wallet will send from the key and sweep the rest onto a key ...
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2answers
113 views

Issue after importing private key to MultiBit

I followed another question here and imported my address from Bitcoin-QT to Multibit. The reason why I did so was because I had received some BTC but in Bitcoin-QT it was taking years to download the ...
1
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1answer
247 views

Generating an address from a private key in Java?

I'd like to write a function in Java that takes a private key and generates the address to use in a QR code. I'd like to make this , but I'm not very good with the hashing algorithms. I've checked ...