Private keys are for signing transactions.

learn more… | top users | synonyms

0
votes
1answer
25 views

PHP Checking privatekeys

I am setting up my site on a hosting (not a server, just a hosting) where i will accept payments of bitcoins and maybe other cryptos later, after a week or so, i want to "sweep" my wallets. In short: ...
1
vote
0answers
28 views

How do I obtain the “Private Key” from my Armory Paper Backup

1) My laptop with Armory and bitcoin has been stolen. However, I have a Paper Backup - which gives: Wallet Version / Wallet ID / Wallet Name / Backup Type / Root Key (72 letters) - but NO "Chain ...
-1
votes
1answer
42 views

How do I import private keys en mass from a text file?

How do I import private keys en mass from a text file? They are in Wallet Import Format, e.g. 5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ. Would there be any limitations to the number of keys ...
1
vote
1answer
55 views

Is it correct that more than 160 bits of input data for producing a private key are superfluous?

If this is true, when I make a 64 character hexadecimal private key I need only provide randomness for the first 40 characters (40 x 4 bits per character = 160). The remaining 24 characters can be ...
0
votes
0answers
32 views

When you sweep a private key at Blockchain can you sweep the key in HEX format?

It would be useful to know this because I have made a 64 character hex private key by hand and generated the address without storing the key in WIF format. I don’t want to go online, input the hex key ...
2
votes
2answers
72 views

How do I spend Bitcoins from a specific address?

What's happening when I use importprivkey? Are the coins merged to my existing private key or is the new key added to my wallet? I want to import a private key, receive funds on it, and send the same ...
1
vote
1answer
43 views

Get private key from BigInteger

I have a BigInteger that represents a private key. How can I get that private key as a base58 encoded string? The following pseudo code does not work properly: base58.encode(bigInt.toByteArray) // ...
0
votes
2answers
26 views

Sendtoaddress using custom private key

Let's say the user sends me his private key. What is the appropriate RPC command to spend the Bitcoins of this user using his private key? Should I import his private key in the wallet before?
1
vote
0answers
23 views

How do I export a private key from my Bitcoin-QT wallet if the wallet isn't synced? [duplicate]

I started syncing a bitcoin-qt client, and had somebody send me funds to an address generated in the client. I then stupidly decided to speed up the syncing process and downloaded a torrent of ...
2
votes
0answers
29 views

Key Pools and best practices

I'm wondering about what the best practices are around generating and maintaining key pools for a wallet. What is the maximum number of keys/addresses that can be created for a single wallet? ...
3
votes
1answer
68 views

Why doc says importing private keys is so dangerous?

There are a lot of applications when someone would like to import a private key. However in wiki documentation they say it is very dangerous: https://en.bitcoin.it/wiki/How_to_import_private_keys ...
0
votes
0answers
36 views

Where can I find a C or C++ implementation of converting bitcoin privatekey to bitcoin public key and bitcoin address?

There are versions in python and some such things, but I need a C version (or at least C++). I do have the sha256, RMD160 in C already, and those functions are called. Thank you.
1
vote
1answer
44 views

Are specific private keys weaker than others?

I've heard some discussion about how certain private keys can be considered weaker because they were generated using a weak randomness algorithm. I have very little experience in this subject and ...
1
vote
1answer
45 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 ...
3
votes
1answer
218 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
votes
1answer
33 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 ...
1
vote
1answer
69 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
votes
1answer
49 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 ...
0
votes
2answers
61 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 ...
0
votes
0answers
13 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
vote
1answer
33 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
votes
1answer
85 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 ...
0
votes
0answers
75 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 ...
0
votes
0answers
29 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 ...
0
votes
3answers
100 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?
-1
votes
1answer
61 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: ...
1
vote
0answers
115 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
78 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
votes
2answers
48 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
vote
0answers
68 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
vote
1answer
110 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
vote
1answer
341 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 ...
1
vote
0answers
105 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
votes
1answer
70 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
vote
0answers
47 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
votes
2answers
145 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
votes
1answer
49 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
229 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 ...
1
vote
1answer
567 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
votes
1answer
141 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
vote
1answer
74 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 ...
1
vote
2answers
147 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
votes
2answers
120 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
votes
1answer
215 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
312 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
votes
0answers
528 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
votes
1answer
2k 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?
3
votes
3answers
197 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
102 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
votes
1answer
98 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 ...