How to create a Bitcoin wallet address from a private key

Could you create a bitcoin private key from scanning a bar code + 4 pin code?

Can someone tell me if I can create bitcoin private keys from a random bar code (let's say from a lotto ticket) and plus my own 4 pin code.
submitted by WhoCaresForUsernames to Bitcoin [link] [comments]

Hash a personal photo or file to create a bitcoin private key

Don't want to remember a long password? Just take a personal photo (or other file), hash it, and use the hash to generate a brainwallet.
For extra security you could salt the hash by adding a personal phrase or word for extra security.
Now keep a copy of this file on a few CDs and you're set.
Hashing a file is super easy. http://www.nirsoft.net/utils/hash_my_files.html http://implbits.com/hashtab.aspx
submitted by cryptodude1 to Bitcoin [link] [comments]

VISA: "The concept of digital currency — or a digital version of cash controlled by a private key — was created more than a decade ago, with the launch of Bitcoin."

This announcement by VISA is huge and I haven't seen it on this sub. I tried to submit the link but I was not allowed because someone else submitedd it yesterday (day of announcement), but that post got only 2 upvotes (maybe bad title?), so here it is:
https://usa.visa.com/visa-everywhere/blog/bdp/2020/07/21/advancing-our-approach-1595302085970.html
As a global payments technology company, Visa is focused on delivering the greatest value to people, businesses and economies everywhere, regardless of currency, channel or form factor. We’re reshaping how money moves across the globe, and that means pursuing a broad array of technologies and partnerships. In that regard, digital currencies offer an exciting avenue for us to continue doing what we do best: expanding our network-of-networks to support new forms of commerce.
The concept of digital currency — or a digital version of cash controlled by a private key — was created more than a decade ago, with the launch of Bitcoin. Today, fiat-backed digital currencies, commonly referred to as “stablecoins,” have emerged as a promising new payment innovation, combining the benefits of digital currencies with the stability of existing currencies like the US dollar. It’s a concept that is gaining traction beyond fintechs, and now includes financial institutions and central banks. Consumers and businesses are also adopting digital currencies and circulation is growing rapidly, reaching over $10B in May.1
Visa has been working closely with licensed and regulated digital currency platforms like Coinbase and Fold to provide a bridge between digital currencies and our existing global network of 61 million merchants. Around the world, more than 25 digital currency wallets have linked their services to Visa, giving users an easy way to spend from their digital currency balance using a Visa debit or prepaid credential — anywhere Visa is accepted.
Similar to other digital wallets, digital currency wallets are looking to use the full range of Visa’s capabilities, including Visa Direct, which makes it faster and easier for consumers to convert digital currency and push those funds to their Visa credentials in real-time. Much of this work is happening through Visa’s FastTrack program, which helps fintechs, including those in the digital currency space, integrate quickly with Visa’s global network.
Through these efforts, Visa has become the preferred network for digital currency wallets, which are eager to deepen their value to users by making it quicker and easier to spend digital currency worldwide.
We’ve been advancing and evolving our digital currency strategy for quite some time. Last year we made an investment in Anchorage, a company building security infrastructure for the digital currency ecosystem. Our research team has been exploring the science of blockchain technology for several years. Their work has yielded several promising innovations, including Zether2 and FlyClient.3 Today their research is focused on new mechanisms to improve scalability and enable offline digital currency transactions.
We know that policy leaders and regulators continue to have questions and concerns about digital currencies on a range of issues, from consumer protection to payments resilience. We believe the best way to address these concerns is by working closely with leading companies and the public sector. For more than 60 years, Visa has invested in building and maintaining a resilient global network that delivers best in class functionality to our clients and consumers. Extending this legacy into the decades ahead requires continuous innovation and collaboration with a range of partners.
As part of this public sector strategy, Visa has been engaging with policy makers and global organizations to help shape the dialogue and understanding of digital currencies; this includes our work with the World Economic Forum and our collaboration on a set of policy recommendations for central banks exploring the concept of Central Bank Digital Currency (CBDC).
As our product and research teams continue to evolve our offering in this space, Visa’s digital currency strategy will reflect a set of key values:
Security, privacy, integrity and trust. We will maintain a rigorous focus on data protection, consumer privacy and fairness, and full compliance with all applicable laws. Remaining currency- and network-agnostic: We plan to support the digital currencies and blockchain networks that our clients and partners demand, in keeping with our broader network-of-networks strategy. Alignment with Visa’s core capabilities: We have deep expertise in securing transaction data, working with diverse stakeholders, and maintaining an always-on network with continuous availability. We will pursue projects that allow us to apply this expertise to new networks and technologies that can benefit our existing clients and partners. We believe that digital currencies have the potential to extend the value of digital payments to a greater number of people and places. As such, we want to help shape and support the role they play in the future of money. We look forward to sharing more with you on this work in the months that follow.
To find out more, please visit https://usa.visa.com/solutions/digital-currency.html
submitted by simplelifestyle to Bitcoin [link] [comments]

Is BIP39 less secure than a completely random private key (created with some dice for instance)? (x-post from /r/Bitcoin)

submitted by ASICmachine to CryptoCurrencyClassic [link] [comments]

How to create a Bitcoin wallet address from a private key

How to create a Bitcoin wallet address from a private key submitted by smoknfx to smoknfx [link] [comments]

Banking vs. Bitcoin

Generalisation based on my own experience, your country might vary
Opening a bank account
  1. Ensure you are over the age of 18, or have a legal guardian to sign on your behalf
  2. Choose a bank
  3. Consider the types of accounts based on your eligibility
  4. Ensure you are a resident of the country you are looking to open the account
  5. Read and accept any Agreements and Terms and conditions to form a binding contact between you and the bank
  6. Provide your full name, email, personal, work, and mobile contact information
  7. Provide proof of identify, either passport or government issued identify document
  8. Provide proof of residence usually not exceeding more than 3 months (ensure this is kept up to date when you move)
  9. Provide proof of income based on the type of account
  10. Deposit a minimum opening balance
  11. Keep the account open with a minimum balance and administration fee
  12. Deposit money into the custodial control of the bank on a regular basis to ensure the operation and status going forward
Creating a Bitcoin Private key
  1. Generate a random number between 1 and 2256
submitted by gr0kch8n to Bitcoin [link] [comments]

I have created a tool that fixes a mistyped Bitcoin WIF Private Key or restores up to 4-5 missing characters. It's free and open for everybody. Hope it helps

I have created a tool that fixes a mistyped Bitcoin WIF Private Key or restores up to 4-5 missing characters. It's free and open for everybody. Hope it helps submitted by ishristov to Bitcoin [link] [comments]

How to create a Bitcoin and Ethereum crypto address - Java - Learn to code and create a Bitcoin and Ethereum address using Java open-source libraries. Create your private keys

Free only for 2 days to promote the course. Please considering rating the course if you like it. I'll sell this course for .min 10$ after this promotion.
I'm providing huge amount of resources, source codes for free. Please consider rating the course.
Learn how to create private keys and addresses offline — without having an internet connection — for Bitcoin and Ethereum cryptocurrencies.
Technical details:
https://www.udemy.com/course/how-to-create-generate-bitcoin-and-ethereum-crypto-addresses-offline/?couponCode=89540D4D04F19425AED5
Thank you
submitted by mycrypto-tools to cryptography [link] [comments]

Are there online tools so that a person, by an online tool #1 ((which can be downloaded and then run offline) ), might create a transaction offline with their private key and then, by an online tool#2, might broadcast this signed transaction into the Bitcoin blockchain?

submitted by andrrpetr to Bitcoin [link] [comments]

How to create a Bitcoin and Ethereum crypto address - Java - Learn to code and create a Bitcoin and Ethereum address using Java open-source libraries. Create your private keys

Free only for 2 days to promote the course. Please considering rating the course if you like it. I'll sell this course for .min 10$ after this promotion.
I'm providing huge amount of resources, source codes for free. Please consider rating the course.
Learn how to create private keys and addresses offline — without having an internet connection — for Bitcoin and Ethereum cryptocurrencies.
Technical details:
https://www.udemy.com/course/how-to-create-generate-bitcoin-and-ethereum-crypto-addresses-offline/?couponCode=89540D4D04F19425AED5
Thank you
submitted by mycrypto-tools to CryptoCurrencies [link] [comments]

Creating a bitcoin wallet address from a Private key - Cryptoline News

Creating a bitcoin wallet address from a Private key - Cryptoline News submitted by Bal77 to u/Bal77 [link] [comments]

11-14 14:24 - 'Hey, we are building a wallet app that allows you to generate and export private keys to exterior storage devices directly from the smartphone. In other words, create your own cold wallet with anything that can hold your...' by /u/BitFreezerApp removed from /r/Bitcoin within 32-42min

'''
Hey, we are building a wallet app that allows you to generate and export private keys to exterior storage devices directly from the smartphone. In other words, create your own cold wallet with anything that can hold your encrypted private keys. The app operates only on RAM, so when you work with your keys within the app, after closing the session, all the data is erased. However, your keys always remain in the encrypted folder accessible only by you. I'm one of the founders of the project and I would really appreciate your feedback. Check us out: [bitfreezer.app]1
'''
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Author: BitFreezerApp
1: bi*fr*eze*.ap*
Unknown links are censored to prevent spreading illicit content.
submitted by removalbot to removalbot [link] [comments]

PSA to new users of bitcoin (especially if you feel you don't understand bitcoin very well)

This thread on bitcointalk worries me. I suspect a lot of people are buying and have bought something they don't understand, and I'm concerned that thefts are going to increase as a result. If this is you, please read this.
Wallets
To access your bitcoins and transact with the network you're going to use a wallet. This will either be a piece of software you install on your computer or an online wallet service like blockchain.info. The wallet jargon is just a convenient way to refer to what's going on under the hood. Every Bitcoin address has an associated private key, and the private key is really just a string of numbers and letters. You can only spend bitcoins at addresses for which you also have the associated private key. If you happen to find somebody else's private key, then you can import it into other Bitcoin clients or online wallets and then you have the ability to spend any coins associated with that private key's addresses.
Most wallet clients give you the option to encrypt your private key. Please do that. That means you can protect it with a password. You will be asked for this password to create transactions. Your blockchain.info login password serves that purpose, for example.
Passwords
Use strong and unique passwords. That advice applies to your entire online life, really. If you use weak passwords and/or you don't use unique passwords, then you are at risk of somebody guessing your password using a computer designed to make lots of guesses. If your passwords are not unique that gives attackers the opportunity to compromise more than one service. It's best to use a mix of lower case, upper case, numbers, and symbols in your passwords. Your passwords should also be sufficiently long, around 16 characters, for services that you would really hate getting compromised. You should still use unique passwords for services you don't consider critical, but for those services you might not feel it's necessary to use long passwords with a mix of all character types. Of course, this is all up to you.
Passwords managers can help you organize lots of strong, unique passwords. Lastpass is a fantastic password manager. It works across all the major browsers and they even have mobile apps. You create one really, really strong password that you must never forget, and then Lastpass organizes and remembers all of your other passwords for you. Lastpass encrypts all of your data before it's sent to their servers, so they can't see your passwords. If you forget your Lastpass password, then you lose access to passwords stored with them, unless you remember them or have them stored somewhere else.
You can make strong passwords easier to remember by increasing their length with a relatively simple pattern while still using each character type. This is called password padding. Security researcher Steve Gibson explains by comparing two passwords:
Which of the following two passwords is stronger, more secure, and more difficult to crack?
D0g.....................
PrXyc.N(n4k77#L!eVdAfp9
You probably know this is a trick question, but the answer is: Despite the fact that the first password is HUGELY easier to use and more memorable, it is also the stronger of the two! In fact, since it is one character longer and contains uppercase, lowercase, a number and special characters, that first password would take an attacker approximately 95 times longer to find by searching than the second impossible-to-remember-or-type password!"
Strong, unique, but memorable passwords depend on using all character types and adding memorable length. You really should also avoid dictionary words and common modifications of simple dictionary words (e.g. dog, d0g, etc.) Consistent with the advice to use unique passwords, you wouldn't want to use the same padding technique for more than one critical password.
Multi-Factor Authentication
Many online services (e.g. gmail, blockchain.info, MtGox, Lastpass) offer the option to use multi-factor authentication. If this service is offered, you should use it. This means that you need more than your password to log into your account. It can come in the form of a number sent as a text to your phone, a usb key that must be plugged into your computer, or an app like Google Authenticator. When you log into a service for which multi-factor authentication has been activated you will be asked for both your password and an additional pin sent to or derived from a separate device. This offers you some protection from key loggers which an attacker can install on your computer to see everything you type. Even if they discover your password, they will be unable to log in without the additional pin from, say, your phone. A previously used pin will not work, they would need one generated specifically for the most recent attempt to log in.
If the email provider that you use offers multi-factor authentication, and you use that email to register for important services (e.g. online banking, bitcoin wallets, exchanges, etc), then you should definitely enable multi-factor authentication. If an attacker can compromise your email, then they can potentially access lots of websites your registered at, because they can ask the websites to reset your password. Websites typically send a password reset email under the assumption that only you have control of your email. If you don't, an attacker can change the passwords to your web services. By enabling multi-factor authentication on your email, you can significantly decrease the odds of an attacker compromising your email. You should likewise use multi-factor authentication with any password managers you use, if you choose to use one.
This might all seem very inconvenient. However, the security gained far outweighs any convenience lost.
Advanced Bitcoin Wallet Security
The most secure way to safeguard your bitcoin value is to create and keep your private keys on systems that cannot be hacked into. This can be a computer that is setup without ever touching the internet, or paper wallets. A paper wallet is just some text based way to represent your private key. An attacker cannot compromise an offline computer without physical access, and he would additionally need to know the passwords to log onto your offline computer. If you have offline systems such as offline computers or paper or other physical wallets, then obviously the attack vector is basically physical burglary.
The Armory bitcoin client is a client designed to maximize security options. Armory makes it relatively painless to setup an offline wallet. A computer does not need to be connected to the internet to create valid bitcoin private keys with associated bitcoin addresses. That's because their creation is determined by algorithms that can be copied and run on any computer with or without network connections.
With Armory you can setup offline bitcoin wallets. In order to send bitcoins to that wallet you just need to copy an address created on the offline computer. The offline wallet can create what's called a "watching only wallet". This is a wallet you can import into an online installation of Armory on a different networked computer. From the online watching only wallet you can see bitcoins sent to your addresses and you can create unsigned transactions. You can try to broadcast an unsigned transaction, but it will not be confirmed in the blockchain, and is not a valid transaction. In order to send the transaction into the blockchain and have it validated you will need to copy the unsigned transaction to a USB device, import it into the offline Armory wallet, sign the transaction, then copy and move it back to your online Armory wallet. From there, it can be sent and received as a valid bitcoin transaction. In this way it is made practically impossible for a network attack to steal your bitcoins.
It's a good idea to create additional offline backups of your Armory wallets. Armory has a feature to create printable offline backups. These can be used to restore your wallet in the event that your offline computer is destroyed or stolen.
Systems like this are more inconvenient, but offer the highest level of relatively easy to setup security.
Thanks, welcome to bitcoin, and stay safe.
Edited to add a section on advanced wallet security
submitted by therealproudhon to Bitcoin [link] [comments]

I couldn't find an existing guide, so I made my own: Bitcoin Seed from Coin Flips - How to create a truly random 12-word (or 24-word) Bitcoin private-key recovery phrase using: 128 coin-flips, a pencil, paper, and a grid. No air-gapped computers, apps, or trust in any 3rd party software.

I couldn't find an existing guide, so I made my own: Bitcoin Seed from Coin Flips - How to create a truly random 12-word (or 24-word) Bitcoin private-key recovery phrase using: 128 coin-flips, a pencil, paper, and a grid. No air-gapped computers, apps, or trust in any 3rd party software. submitted by GabeNewell_ to Bitcoin [link] [comments]

Creating a Private Key by Flipping a Coin /r/Bitcoin

Creating a Private Key by Flipping a Coin /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

How to Create a Bitcoin Wallet Address from a Private Key https://goo.gl/5JdHaZ - Crypto Dynamic Info - Whales's

Posted at: February 23, 2019 at 09:32PM
By:
How to Create a Bitcoin Wallet Address from a Private Key https://goo.gl/5JdHaZ
Automate your Trading via Crypto Bot : https://ift.tt/2EU8PEX
Join Telegram Channel for FREE Crypto Bot: Crypto Signal
submitted by cryptotradingbot to cryptobots [link] [comments]

How to Create a Bitcoin Wallet Address from a Private Key

How to Create a Bitcoin Wallet Address from a Private Key submitted by Ranzware to BitNewsLive [link] [comments]

03-06 20:17 - '1. - Correct although whilst creating these in a wallet you will only see the public address. You usually need to go through an extra step to view the private key for the public address . In Bitcoin Core you have to export t...' by /u/trousercough removed from /r/Bitcoin within 1-6min

'''
    • Correct although whilst creating these in a wallet you will only see the public address. You usually need to go through an extra step to view the private key for the public address . In Bitcoin Core you have to export the private key with a certain command in the terminal. This is presumably done to make it less likely for a user to copy and paste their private key publicly. The same goes for Monero although the software is quite different and there are some extra features with that coin. For Bitcoin I suggest Electrum wallet for PC, Mycelium for Android and Breadwallet for iOS.
    • Correct. I suggest using bitaddress.org ( download their tool from github ) and TAILS. Create BIP38 encrypted wallets for extra security. Verify everything you download with official signatures. Google is your friend here..
    • Correct. You may view this habit as not ' putting all your eggs in one basket. ' If one wallet is compromised then you only lose a portion of your coins, not the whole lot.
    • Correct you can use this method.
    • Correct. You will pay a commission for every exchange although you may consider registering with an exchange that trades both Bitcoin and Monero. That way you can go straight from cash to Monero and cut out some fees.
Hope this helps.
'''
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Author: trousercough
submitted by removalbot to removalbot [link] [comments]

I have created a tool that fixes a mistyped Bitcoin WIF Private Key or restores up to 4-5 missing characters. It's… https://t.co/3iO2uqpPPv - Crypto Insider Info - Whales's

Posted at: December 31, 2018 at 01:27AM
By:
I have created a tool that fixes a mistyped Bitcoin WIF Private Key or restores up to 4-5 missing characters. It's… https://t.co/3iO2uqpPPv
Automate your Trading via Crypto Bot : http://bit.ly/2GynF9t
Join Telegram Channel for FREE Crypto Bot: Crypto Signal
submitted by cryptotradingbot to cryptobots [link] [comments]

I have created a tool that fixes a mistyped Bitcoin WIF Private Key or restores up to 4-5 missing characters. It's free and open for everybody. Hope it helps

I have created a tool that fixes a mistyped Bitcoin WIF Private Key or restores up to 4-5 missing characters. It's free and open for everybody. Hope it helps submitted by cryptoallbot to cryptoall [link] [comments]

I have created a tool that fixes a mistyped Bitcoin WIF Private Key or restores up to 4-5 missing characters. It's free and open for everybody. Hope it helps

I have created a tool that fixes a mistyped Bitcoin WIF Private Key or restores up to 4-5 missing characters. It's free and open for everybody. Hope it helps submitted by ABitcoinAllBot to BitcoinAll [link] [comments]

I tried to create a new Electrum on my Windows 7 using an old address from my old Electrum. I went to create default wallet > Import Bitcoin addresses or private keys Then i typed an address. But i could type the Next button. How do i proceed?

submitted by Donovanxxxx to Electrum [link] [comments]

Create Mycelium Bitcoin wallet & export private key ... Generate Non-Spendable Private key 2019 bitcoin hack - bitcoin hack tips and tricks - private key ... How to create your own Bitcoin private keys How to Generate a Private Key from a Bitcoin watch only ...

In cryptocurrencies, a private key allows a user to gain access to their wallet. The person who holds the private key fully controls the coins in that wallet. For this reason, you should keep it secret. And if you really want to generate the key yourself, it makes sense to generate it in a secure way. Here, I will provide an introduction to private keys and show you how you can generate your ... In contrast, bitcoind provides a facility to import a private key without creating a sweep transaction. This is considered very dangerous, and not intended to be used even by power users or experts except in very specific cases. Importing keys could lead to the Bitcoins being stolen at any time, from a wallet which has imported an untrusted or otherwise insecure private key - this can include ... We’ll use this private key throughout the article to derive both a public key and the address for the Bitcoin wallet. What we want to do is to apply a series of conversions to the private key to ... Creating Bitcoin Private Keys with Dice. While many Bitcoin wallet apps are good enough to store everyday walking-around money, storing larger amounts of money requires extra security. This is no different from cash. For example, many stores will limit the amount of money in their cash registers and put the rest in their safe. This article explains a high-security method of storing Bitcoins ... We’ll use this private key throughout the article to derive both a public key and the address for the Bitcoin wallet. What we want to do is to apply a series of conversions to the private key to get a public key and then a wallet address. Most of these conversions are called hash functions. These hash functions are one-way conversions that ...

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Create Mycelium Bitcoin wallet & export private key ...

Learn how to hack Private Key's from Bitcoin Addresses by reversing the mathematics. Music by Cannibal Monkey - https://soundcloud.com/cannibal-monkey and Sh... Bitcoin Wallet Hack! A program that searches for the private key of a bitcoin! Best method - Duration: 24:52. How to find bitcoin 4,556 views. 24:52. How to create Bitcoin account in mycelium app and export private key. Step by step explanation. For more information about another wallets of bitcoin visit a... Bitcoin p2pkh address generated by the Bitcoin Private Key Random Address Generator can be searched from a local .pickle or text file and can also be searche... #Bitcoin #Coding #Python #WIF #PrivateKeys #Brainwallet Important Note: This video does not show how to verify the private key is in the valid range. To do so, compare the hash of your text ...

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