Questions tagged [private-key]

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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Safe way to create a mnemonic and address in golang

I have been looking over internet in the different repos of btcsuite but had no luck in finding a way to generate a 12 word mnemonic and convert this to an address using the go language. It needs also ...
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How do I restore the public key?

Let say, I create wallet and have two public key and one private key. And I remove the first public key from the wallet. Can I restore and use my first key again? Or it's removed at all. Sorry for the ...
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Is brute forcing a private key with unspent coins getting easier?

Is the likelihood of correctly guessing a private key with unspent coins increasing due to: More addresses being used resulting in more private keys with unspent coins (i.e. higher chance that a ...
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34 views

Can Bitcoin be recovered from a child key alone?

I have a question regarding BIP-32 and keys. Imagine a scenario in which a user creates a new Bitcoin wallet with a seed phrase. He then generates a new address and sends 1 BTC to this address. Under ...
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2answers
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Is it possible that malicious bitcoin wallet providers provide pre-generated private-keys for users?

We trust wallets like Ledger, Trezor, and etc. We believe the math that the randomly generated private keys are safe. But could it be possible that the private keys you thought are “generated” are ...
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1answer
25 views

How do many public keys correspond to one private key?

I have read online that hardware wallets can generate new public keys to facilitate transactions. Ie if someone has BTC on an exchange and they want to send that BTC in different installments to a ...
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2answers
38 views

Storing private keys in cloud providers enviroment variables

Is it ok to store private keys in cloud provider (such as AWS, Firebase) secrets (enviroment variables) in cloud functions (such as lambdas or firebase cloud functions)? I understand I would be ...
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28 views

Generate BTC Compressed Address

The below code generate uncompressed address with and the Private key for this uncompressed address. How to generate compressed address with it's private key ? I know there is packages like bitcoin ...
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How Create Bitcoin wallet from a private key works?

I'm trying to understand how i can create a pair of bitcoin private key and public key with : https://github.com/Destiner/blocksmith for example : import blocksmith kg = blocksmith.KeyGenerator() ...
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Compare private keys and public keys from blockchain

What I want to do is to compare all generated private keys and public keys from blockchain: Input data: I have gigabytes of strings (one per line) which I can convert to BTC private keys and later ...
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Bitcoin creating wallet without seeing private key

I would like to create a Bitcoin paper wallet for a friend. However, I know that I should not have the private key as well. Is it possible to create a wallet but where I only have the public key and ...
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Does the protocol ensure that pair keys wallet are unique? [duplicate]

What mechanism for proof unique pair keys (public key and private key) when creating a wallet with several sources(such as "wallet.btc.com", "wallet.bitcoin.com", "www....
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66 views

Retrieve all Unspend Output given a priv key

Is it possible to retrieve all Unspend Output transaction given the private key? I have noticed that different wallet give me different balance for the same Private Key. For instance, Atom and BitPay ...
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how to recover private key

Dear friends, i recently came up watching a video called ECC backdoor, it state that if you know the exact number of steps taken by generator point you can recover your private key. can anyone tell me ...
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Retrieving a WIF bits private key

Suppose I have a Wif private key from Electrum 4.0.9: L2pt3eVopnxfBBvMwrJV2saZeAyQfF77UQSH5WGj5q9LBS6WWBmN ( this one or the other generated from the seed is non used of course ) with a corresponding ...
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25 views

How are a private key and a seed phrase related?

Is it a 1-to-1 relationship? If so, does that mean they are interchangeable? Can I then store just one of them and derive the other when needed?
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Cryptocurrency Wallet 3rd party access

Do Crypto wallets such as Exodus etc have something like an API? For example is it possible to perform a cryptocurrency transaction directly from the web browser client (using the specified amount and ...
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1answer
43 views

Is it possible to send Bitcoin without the passphrase to the wallet?

I’ve been getting back into cryptocurrency lately, and I’ve found one of my old wallet.dat files with a very small amount of BTC. Unfortunately, I created a random password of characters and put it ...
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Python: Why the addresses and keys generated by pywallet and bip32utils using the same 12 mnemonic words don't match?

I tried to generate wallets by using pywallet and bip32utils (Python). But I noted that the addresses/keys of the 2 wallets, namely wallet_pywallet and wallet_bip39 don't match with each other. I ...
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I lost my 12 or 24 words to my bitcoin wallet. I just have my password

I lost my 12 or 24 words to my bitcoin wallet. I just have my password. How can I get them back? Is there a software or a website where I can enter my password and get my asset back?
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61 views

How to correctly create and import a SegWit paper wallet

I use Bitcoin Core to create SegWit paper wallets for friends and family. After creating the wallet via the GUI, the steps I take are as follows: getnewaddress # Carry this public key back to the ...
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1answer
66 views

Safest way of long term holding

I am considering holding Bitcoin for the long term. I have learned a few basics about the blockchain and BTC mechanisms, but still unable to find a complete guide on how to safely store bitcoin. How ...
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41 views

Spending transaction output with only xpriv key

Is it possible to spend a P2WPKH transaction output, with only knowing the xpriv key and not knowing the specific private key that corresponds to the public key of the transaction?
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Coinbase missing Bitcoin [duplicate]

So someone sent me Bitcoin cash but the sender did not tell me it was Bitcoin cash. So I sent a Bitcoin address. I use Coinbase. Is my money lost? I can’t seem to get a private key or a public key ...
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1answer
61 views

How Can I import Multibit Private Key into Electrum or Blockchain.com

I am having trouble importing a multibit private key into electrum and blockchaing.com. The key is declared invalid. the key looks like this U2FsdGVkX1+vNknxxxxxxxxxxxxxxU/KiWdlFKlBCv0y613C+...
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42 views

Verify that WIF corresponds with bip32 extended public key

I have a bip38 encrypted private key that I lost the password to, and I have its corresponding extended public key. I want to brute force passwords as I have an idea of what it might be, but I need to ...
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What Bitcoin Wallet Can I Transfer BTC.com Private Keys To?

I have $43 of Bitcoin in a BTC.com wallet,: What wallet(s) can I transfer private keys too? (I can not send from BTC from wallet). What wallets are compatable? Gary shopansave52332gmail.com
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65 views

What is the formula for calculating the private key? resued R value

What is the formula for calculating the private key? I want the equation in detail to try to solve it on cocalc I want an equation to extract the private key from two different addresses I have tried ...
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Coinbase tells me to send from electrum to my private key?

A few years ago I sent my BTC from Coinbase to Electrum on windows PC. That apparently went fine because Electrum showed the correct balance. Then I received 12 keywords and a hash (starting with 17)...
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134 views

What if a multibit classic private key is decrypted into garbled codes?

7 years ago I exported the multibit classic wallet and private key, both encrypted. Only remember the key password now. Problems occurred when I tried to decrypt the key in following ways: installed ...
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what is math behind elliptic curve? (duplicate) [duplicate]

I have seen many videos regarding the math behind the bitcoin elliptical curve but none of them showing the public key generation they are just defining few steps. i need complete math behind the ...
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1answer
70 views

What's the most efficient method to try and guess a wallet's private key?

I have a Bitcoin address that I want to guess its private key. What's the most efficient way to do it? I don't mean "use a trillion servers" but "use this program this way". Note ...
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3answers
137 views

What is the math behind Bitcoin's elliptic curve?

I have seen many videos regarding the math behind the bitcoin elliptical curve but none of them show the public key generation. They are just defining few steps. I need the complete math behind the ...
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2answers
66 views

Where does it go and who verifies private keys?

Let's imagine a situation: I want to send bitcoins to a friend. I need a private key to identify my wallet ownership. So: where is this key sent and who verifies it? Wallet (client)? Nodes? Miners? ...
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1answer
53 views

Is there a simple python script for xpub generation from private key

I need a python script to verify, in an air gapped system, that my 24-word (or 12-word) mnemonic seed indeed generates the xpub that my wallet is showing me. Is there a simple script that does that, ...
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1answer
19 views

It it posible, pros and cons using multiple pass phrases on same blockchain?

new to crypto, from what I can tell so far, the pass phrase is equivalent to knowing the private key. If this assumption is true - In theory and for example, what are the pros and cons creating a new ...
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36 views

How to execute bitcoin transactions in a decentralized way?

I'm working on a project to automate donating bitcoins to charity every time Elon Musk mentions #Bitcoin on Twitter. To make this possible, people who want to donate would need to send bitcoins to an ...
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1answer
35 views

bitcoin address after transaction security questions

I found an old paper wallet on an old computer of mine which is offline (I can count the number of coins with my fingers). I would like to distribute these coins now among 6-9 wallets (I want to give ...
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1answer
41 views

What are the benifits of using Compressed Bitcoin Addresses rather than Uncompressed addresses if same length?

They are both in base58, both 34 characters long, so where exactly is the space saved? When converted to binary is there one less bit on the compressed key as opposed to the uncompressed one? (This is ...
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2answers
106 views

I have a txt file labelled private key, inside is what i assume to be base64 string ending with =

I have a txt file labelled private key, inside is what i assume to be base64 string ending with =, is there any way I can access the wallet I assume this is the private key for?
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Can I create my own 24 word system using JavaScript or Ruby?

Ledger Nano X has a 24 word system. So can I create this system on my own computer? And I can use 3 words, 9 words, 24 words, just by a method like the following? Say, for simplicity, if it is 3 ...
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140 views

Are Hardware Wallets (i.e, Ledger Nano X) Safer than Software-Based Cold Storage Wallets?

I'm looking into purchasing Ledger Nano X as a cold storage hardware solution. What benefits does Nano X (or other hardware wallets) provide over software based cold storage solutions? Why not install ...
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1answer
205 views

Bitcoin-Qt client wallet.dat extract private key to import on another service

I have a file: wallet.dat where should be saved one or more private keys of my old wallet linked to one/more public btc addresses. I also had more than a wallet, so I don't really know if there are ...
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1answer
178 views

Securing the “weakest link” of a chain through Sharding

In this question I discussed how sharding a private key with Shamir's Secret Sharing Scheme maybe a good alternative to MultiSig as a means of reducing excessive fees associated with MultiSig ...
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2answers
51 views

Does private key belong to one public key in Bitcoin?

More address belong to one wallet in Copay. I have a 12-word mnemonic to my old Copay wallet, but not the private key. If I would infer the private key of the 12-word could I reach all the public ...
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1answer
240 views

I need help with an bitcoin open book exam

I am completely new to bitcoin and by extension cryptocurrency, but I am slowly getting my head around certain things. My problem is I am currently doing an open book exam and I am free to use any ...
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Bitcoin.text into Electrum issue with “0014” addresses

I am currently retrieving an old wallet. Which may have recieved btc from another wallet from around 2012/Be the old wallet. While copying in to Electrum to create a new wallet using Import bitcoin ...
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188 views

Is Sharding a Good Alternative to MultiSig?

For security purposes, we require that each withdrawal be "approved" by multiple servers so that in the event a single server is compromised the attacker won't be able to siphon funds from ...
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21 views

Can an exchange or marketplace benefit from private key encryption?

A powerful security technique to prevent theft of Bitcoins from a user's online wallet is to encrypt the user's private key with his password without ever stroring the PK directly in the database. ...
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1answer
38 views

Storing your private key on a “security server”?

One of the suggested security precautions when storing Bitcoin of users on a server is to store the private keys on a separate server: The database storing the private keys or the seeds in case of ...

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