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This tag should be used for questions pertaining to private keys. Private keys are used for signing transactions and allow the holder of the private key to spend the Bitcoin associated with the address derived from the private key.

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Can I recreate the xpub key if I have multiple public addresses with their corresponding private keys?

Is it possible to recreate the xpub key if I have multiple public addresses with their corresponding private keys? All the keys were created from the same HD wallet. I was hodling and watching my ...
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1answer
16 views

What makes an extended public or private key?

I was under the impression that an extended public key was comprised of the public key + chain code, and I'm unfamiliar with what comprises the extended private key. However this does not seem to be ...
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1answer
23 views

Looking for JS/Node.js code example to sign a transaction (with multiple UTXOs) with only the extended private key

Is there any Javascript code out there or examples on how to sign a transaction by using the extended-private-key? What I am essentially looking for is code that will help derive the private key, ...
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2answers
55 views

If anyone with your seed phrase can generate your wallet private keys, what is the advantage of a hardware wallet?

When you start using a cryptocurrency hardware wallet, you get to write down a seed phrase in some physical medium (paper, metal, etc.) so you can regain access to your funds if you lose the hardware ...
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1answer
31 views

Is auditing a BIP32 tree only possible if it is non-hardened?

BIP 32 allows you to to implement the auditor use case: Audits: N(m/*) In case an auditor needs full access to the list of incoming and outgoing payments, one can share all account public ...
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1answer
379 views

How can all possible numbers in 256-bit space be squeezed into 160-bit space?

Bitcoin addresses are essentially 160-bit hashes of a 256-bit public key. Huh? How can all possible numbers in 256-bit space be squeezed into 160-bit space? Does that mean any given bitcoin address ...
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1answer
73 views

Number of Trials Required For Brute Force Attack To Have x% Of Success?

I'm making an informational video about how unlikely it is for an attacker to successfully brute force a specific bitcoin address. Obviously, it will deal with impossibly huge numbers ("not in earth's ...
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1answer
154 views

Sweeping a bitcoin private key using PHP

Is there a PHP script where it validates a bitcoin private key and also gets the public address from the key? My goal was to: verify the private key Get the public address using that private key ...
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2answers
58 views

i lost access to my bitcoin [closed]

I did not have any idea about bitcoin but I wanted to get in, I met this guy who knew about it on facebook asked him if he could help. he sent me the link on blockchain to signup showed me how to buy ...
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1answer
73 views

Can we derive parent’s private key using child’s private key?

In the book named Mastering Bitcoin by Andreas, the author described the usage of derived child keys. One thing I noted was that he said(page 108), The derivation function is a one-way function, ...
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1answer
50 views

Digital Signature and private/public key

I am new to Bitcoin and Blockchain and I am writing a thesis for my university about this topic. I have a general question about digital signatures, which are needed to verify a transaction. As ...
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4answers
73 views

How much computing power is required to bruteforce a Litecoin private key in reasonable time?

Say I want to break a Litecoin private key having the public key using brute force. How much computing power is required for that? Does any hardware exist which can find a matching private key in, say,...
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1answer
31 views

What is the significance of the version byte in front of RIPEMD-160 hash?

Public Address is generated from the private key following some steps. Please refer Bitcoin wiki to see the process.
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1answer
170 views

python-bitcoinlib | Create Private Keys, Public Keys and Addresses - How to Do It?

I'm trying to use the python-bitcoinlib library but its docs aren't entirely clear to me. I'm a programmer but quite new to Python, and not very versed in the Bitcoin protocol. What's the process, ...
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1answer
721 views

How to hack a Password of Private Key

I have a Private key and then after I entered it, there's another saying "Input a required Password of Private Key" So how can I hack or generate that?
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0answers
41 views

ELT Wallet is lost how do I get it back

I accidentally hit the create new wallet button when I was half asleep and when it said enter pin I entered the one for my original wallet. Now I cannot get to the original wallet and I cannot find my ...
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0answers
70 views

I want to find my private key using my extended private key

How can I find my private key to all my imported address that hold funds? Please help me. Thank you.
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1answer
85 views

How are P and ((z1*s2 - z2*s1)/(r*(s1-s2))) calculated?

Given: p = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 r = 0xd47ce4c025c35ec440bc81d99834a624875161a26bf56ef7fdc0f5d52f843ad1 s1 = ...
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2answers
127 views

How do you know your public key from a private key?

In my understanding, when you create a public-private key pair, first, you create a pair of complementary keys by using cryptographic software. Then you give one key the name public key, and give the ...
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1answer
49 views

How does my hardware wallet know what my “account” balance is?

There must be a request to wallet provider's server with full node where they will check it. But what is sent?
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1answer
116 views

Can the Large Bitcoin Collider project 'break' into offline hardware wallets like the Nano Ledger S?

Let's say the Large Bitcoin Collider manages to guess the private key of a particular Nano Ledger S. Can they then 'spend' or 'steal' the Bitcoins on the Nano or 'send' them to another wallet?
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3answers
116 views

Public key cryptography question - Is Private or Public key used to sign? Confusion between which key is used to sign and which is used to encrypt

I am relatively new to cryptography and blockchain and am learning about how public key cryptography works, and its application in Bitcoin's environment. I read two different articles , the 1st which ...
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1answer
599 views

Private key to mnemonic words, is it safe?

Is it safe to do the following? Suppose I do not want the HD wallet, but I do want the convenience of using mnemonic words to remember the private key. I know I can convert the private key's hex ...
2
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1answer
82 views

What does 44' mean in BIP44?

After reading BIP44, I saw Purpose is a constant set to 44' (or 0x8000002C) following the BIP43 recommendation. I believe 0x8000002C is 128 as an integer, how does this equate to 44' however? ...
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1answer
277 views

What is the difference between the mnemonic and the private key?

My thinking so far: If I have a private number, then I can use that as the private key. If I have a mnemonic, I can match up each word to a number in the wordlist to get the seed, which is the ...
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1answer
404 views

How do HD wallets use mnemonic to recover all private keys?

As I understand, a wallet like BRD wallet can have many private keys and receiving addresses. When I give them the mnemonic, how do they re-generate all of the relevant private keys from that ...
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0answers
53 views

How to find bitcoin address from bitcoin privatekey

How to find bitcoin address from bitcoin privatekey using bitcoind json rpc or any other way?
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0answers
62 views

When develop a mobile cryptocurrency wallet, is there any good practice to store private key?

As i know, some wallet like electrum store private keys in client filesystem with encrypted and other web wallet like ether metamask store it on browser storage. And in the mobile wallet, is there any ...
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1answer
92 views

Basic Concept of Bitcoin (public and private) Keys

Can anyone please tell me the difference in the following Bitcoin terms? Difference between xpriv and xpub Difference between xpub and tpub. Difference between ypub and upub. Difference between ...
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0answers
158 views

On what kind of random number generator does each wallet create the secret key based?

Bitcoin core, OpenLedger, METAMASK, or other famous wallets(the type of wallets does not matter) create private keys by using random number generator, and I would like to know they use what kind of ...
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1answer
62 views

I have watched addresses in my wallet..how do i use them?

How do I use the watch only addresses that are in my wallet? I can't find the private keys. Is their any way to use them or should I just delete the wallet with the watch addresses in them?
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1answer
158 views

How to find my private key! Please help!

Trying to send some BTC payments and don’t know my private key. Can anyone help me and tell me it or tell me how to get it.
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1answer
289 views

How are Ledger Nano S private keys protected?

I've read quite some material but it boils down that there "is a chip" on Ledger Nano S and the private key never leaves it. But what I would like to know is the following. Is it encrypted? If so, ...
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2answers
818 views

how to get the whole balance of a privatekey or publickey BTC

As there are some bitcoin address types of one privatekey or publickey. I can get the balance of one address, but how can I get the whole balance of the privatekey or publickey. How can list all the ...
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2answers
185 views

Unlocking a Private Key from watch status

I received Some mining profits to my Blockchain. However the person who sent them to me send them to me with a private key. They then wanted me to send them money to unlock the private key. Does ...
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1answer
60 views

Is the Mycelium HD wallet private key stored encrypted on the device?

haven't found details on that in the net. My concern is that I'm using a corporate (bring you own device) phone. We have to install a "security" app running with administrator rights. IMHO this app ...
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1answer
314 views

SECP256K1 Minimum Value for Private Key

I've been looking into Elliptic Curve Cryptography, in particular the SECP256K1 spec which is used in Bitcoin and Ethereum. So I understand that the Generator point G is fixed based on the spec and ...
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1answer
83 views

Regarding Private Key

Good day. Can you help me out regarding my question. The company (legal entity) at the moment want to confirm the fact, tha certain BTC core wallet actually belongs to her. Though, i would like to ...
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1answer
173 views

I need to import a private key - what is the entire process? [Electrum]

I need to import a private key like in this question for a p2wpkh-p2sh address. What is the entire process?
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3answers
364 views

Importing private keys creates different address

How does importing private keys work? I have previously imported the private key for a 1Archive... address into Bitcoin Core and noted then it added an address like 1AXbRq... and I didn't follow it ...
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1answer
246 views

How to sweep a segwit bech32 private key?

I'm testing segwit bech32 addresses and generated the following using bitcoinjs: address: bc1qc7u5njf4nf2rj3zys642mfc7nct6kdven8j4e9 private key: 5Kkzs8XrJNAmf9VQDFeGBfaRvSByAvPK6DbDXw5BVqswWaXSG2Y ...
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4answers
180 views

Why were private keys made unrecoverable?

Why were lost bitcoin private keys made unrecoverable? Is there a way to do this and if not shouldn't a way be created since people will lose their money.
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1answer
220 views

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. ...
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1answer
115 views

Private key recovery?

I've seen many peoples are actually recovering their private keys using signatures pub key r s z values etc , anyway , I've found a way to recover it but using transaction hex i can't found the ...
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1answer
100 views

Where do I obtain private keys?

Just received my profits from a "watch only" address, where do I obtain private keys?
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2answers
129 views

Can someone please find the private key to this bitcoin address?

I need help this is URGENT! find the private key and send it to me. 3PbacVZwS2L5i9C2Cmz9rPu8s4qjyYkufk I really need this to pay for a bill. I have a deadline and have been trying to figure it out ...
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1answer
346 views

Converting from Private Key to WIF, what am i missing?

They say a image speaks louder then 1000 words so: As you can see from the image above, this should work ? What am i missing here? This is my encode function, http://cryptocoinjs.com/modules/...
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1answer
97 views

I need details explaination about “ BLOCKCHAIN BITCOIN ADDER BOT”

I saw this file titled " BLOCKCHAIN BITCOIN ADDER" on facebook and i tried to follow the process by importing the wallet that was given. On doing that I received a lots of bitcoin that i never dream i ...
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1answer
58 views

Wants to send my bitcoin to another wallet

I’m having issues trying to send my bitcoin to another wallet...it been asking me to confirm a whr code which I don’t really understand cos I have enough money on my wallet
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1answer
142 views

33 byte private key?

I have read that private key is 256 bits or 32 byte. see here I generated a key on bitcoin-test network. WIF: cVe4tA6QHduboeSiQD6Y6nzV1QjaVpDVG2YHbqbtJiSCxsNDYYUF HEX: ...