Bitcoin Private Key Generator V2.4 (Full Version) Free Download - Hack Bitcoin Address, Bitcoin Hack Nqt, Bitcoin Generator Ignore. The new and best way to claim your free Bitcoin, from the creators of the longest running and best free bitcoin mobile apps! Bitcoin Private Key Finder V1.2 Activated Version Free Download. Bitcoin Private Key Finder v1.2 Activated Version Free Download Direct download link (Windows) Bitcoin Private Key Finder v1.2 Activated Version Free Download: has been published after intense three weeks beta testing, which ended with awesome success. Public private key generator free download. ShareX ShareX is a lightweight free and open source program that allows you to capture or record any area o. Jake Frankenfield is an experienced writer on a wide range of business news topics and his work has Freedownload Bitcoin Private Key Generator V2 4 been featured on Investopedia and The New York Times among others.
- Download Private Key Generator V2.44 Free Download
- Bitcoin Private Key Generator V2 4 Free Download
- Download Private Key Generator V2.4ator V2 4
17+ about Bitcoin Private Key Generator that you can download for free
BITCOIN PRIVATE KEY GENERATOR 2018 -FULL WORKING
How To Hack Bitcoin Private Key 2018 Bitcoin Private Key
Bitcoin Private Key Finder software, free download
Bitcoin private key generator V2 4 full new version | k
Bitcoin miner 2018 license key : Sphtx coin address guide
Bitcoin hack program exe / Bitcoin dollar euro zone
Bitcoin private key finder activated / Bee icon league
Bitcoin generator apk download code / Bitcoin dollar live
Bitcoin wallet key generator - Dent coin telegram 711
Bitcoin private key generator free download : Csno coin
4K Video Downloader 4 4 9 Crack License Key generator
Bitcoin mining free gpu, Bitcoin economy games
Bitcoin miner 2018 license key : Sphtx coin address guide
4K Video Downloader 4 4 9 Crack License Key generator
Bitcoin generator hack for android / Star coin bank 2018
Bitcoin private key generator free download : Csno coin
How To Hack Bitcoin Private Key 2018 | Bitcoin Private Key
BITCOIN PRIVATE KEY GENERATOR 2018 -FULL WORKING
People also search: Download Bitcoin Private Key Generator V2.4 : Click Here For Any Kind Of Help Feel Free To contact me on : cryptomaster313@gmail.com Video Tutorial: Click Here This is a 'Live' booting CDROM that runs from RAM, launches a local copy of bitaddress.org in a web browser to generate bitcoin addresses and private keys. Download and print the passphrase.pdf file and use each line to represent each character in the private key. .
Protocol - How Do You Get A Bitcoin Public Key From A Private Key - Bitcoin Stack Exchange
How do you get a Bitcoin Public Key from a Private Key How do I, in extreme specificity, convert a given private bitcoin key into a public bitcoin key (Talk to me like I'm 5 and I have to do this step by step or the evil witch will cook me alive in her oven). NOT where can I find a program that will do this, but if I were to do it myself, what would I do? 0450863AD64A87AE8A2FE83C1AF1A8403CB53F53E486D8511DAD8A04887E5B23522CD470243453A299FA9E77237716103ABC11A1DF38855ED6F2EE187E9C582BA6 Others have asked how to get private to public, I haven't seen a really specific answer, just more general direction, but no answers explain all the variables. I understand this is rather complex and if a given individual thinks its too much work to answer, I totally respect that. Note: I do not care for the Bitcoin Address, just interested in Privatekey to Publickey and the specifics of how. Variables such as the 'a' and 'b' in the ECDSA Curve Algorithm are already designated by Bitcoin (according to ). the 'base point' aka 'G' is also specified on that page. the 'private exponent' or 'k', I have yet to find. Some of these variables are supposedly 'random' which appears to be false as every generator that you can put a private key into seems to always spit out the same public key...so.... all the variables are either already preset or are derived from the private key. Thanks for any help on this. I've been trying to research and understand this for days, but it seems sometimes I don't understand the terms and or notations, but I think I've gotten past that and now am just missing parts of the equation. This is the previous stated private key in Decimal: 11253563012059685825953619222107823549092147699031672238385790369351542642469 This is the previous stated public key (x and y values) inContinue reading >>
Cryptography - How To Generate A Bitcoin Private Key Checksum - Bitcoin Stack Exchange
How to generate a Bitcoin Private Key Checksum I want to understand how a bitcoin private key is made up. Looking at this graphical generator I understand step 1, how the private key is generated: 2CF24DBA5FB0A30E26E83B2AC5B9E29E1B161E5C1FA7425E73043362938B9824 I can see the prepended version number 80, and that I should append the compression flag 01 My question is around step 4, which is simply detailed as 'Append checksum. Checksum is the first 4 bytes of double sha256 hash of whatever is being checkedsum'ed.' So I take 802CF24DBA5FB0A30E26E83B2AC5B9E29E1B161E5C1FA7425E73043362938B982401 and double SHA-256, and I don't get anything like the expected checksum of F29E9187 Can anyone help me understand how F29E9187 is derived? F29E9187 are indeed the first four bytes of the double sha256 of the bytes: 802CF24DBA5FB0A30E26E83B2AC5B9E29E1B161E5C1FA7425E73043362938B982401 In order to check this, you need to compute the double sha256 of this array of bytes. However, as already discussed, passing the string 802CF2... to the hash function will not yield the right answer, as this string is not the array of bytes itself (it is a hexadecimal encoding of the array). So let us create a binary file which corresponds to the hex encoding above: $ echo -n 802CF24DBA5FB0A30E26E83B2AC5B9E29E1B161E5C1FA7425E73043362938B982401 | xxd -r -p > temp Let us check our binary file temp has the correct bytes: $ hexdump -C temp00000000 80 2c f2 4d ba 5f b0 a3 0e 26 e8 3b 2a c5 b9 e2 |.,.M._...&.;*...|00000010 9e 1b 16 1e 5c 1f a7 42 5e 73 04 33 62 93 8b 98 |......B^s.3b...|00000020 24 01 |$.|00000022 So far so good. We can now compute the first sha256 hash of these bytes: $ sha256sum temp08a9d3e1296633b2a4071316eaf597f1c93a0ec2f4b68b24c6e0ad2e7c06540c temp Again, we are faced with a hex encodiContinue reading >>
Bitaddress.org
Comma Separated Values: Index,Address,Private Key (WIF) Why should I use a Bulk Wallet to accept Bitcoins on my website? The traditional approach to accepting bitcoins on your website requires that you install the official bitcoin client daemon ('bitcoind'). Many website hosting packages don't support installing the bitcoin daemon. Also, running the bitcoin daemon on your web server means your private keys are hosted on the server and could get stolen if your web server is hacked. When using a Bulk Wallet you can upload only the bitcoin addresses and not the private keys to your web server. Then you don't have to worry about your bitcoin wallet being stolen if your web server is hacked. How do I use a Bulk Wallet to accept Bitcoins on my website? Use the Bulk Wallet tab to pre-generate a large number of bitcoin addresses (10,000+). Copy and paste the generated comma separated values (CSV) list to a secure text file on your computer. Backup the file you just created to a secure location. Import the bitcoin addresses into a database table on your web server. (Don't put the wallet/private keys on your web server, otherwise you risk hackers stealing your coins. Just the bitcoin addresses as they will be shown to customers.) Provide an option on your website's shopping cart for your customer to pay in Bitcoin. When the customer chooses to pay in Bitcoin you will then display one of the addresses from your database to the customer as his 'payment address' and save it with his shopping cart order. You now need to be notified when the payment arrives. Google 'bitcoin payment notification' and subscribe to at least one bitcoin payment notification service. There are various services that will notify you via Web Services, API, SMS, Email, etc. Once you receive this notification,Continue reading >>
Github - Pointbiz/bitaddress.org: Javascript Client-side Bitcoin Wallet Generator
JavaScript Client-Side Bitcoin Wallet Generator Now Bitcoin addresses and their corresponding private key can be convenientlygenerated in a web browser. The bitaddress.org project provides an all-in-one HTML document with embeddedJavaScript/Css/Images. The JavaScript is readable not minified and contains noXMLHttpRequest's (no AJAX). The benefit of this technique is you can load theJavaScript locally and trust that the JavaScript did not change after beingloaded. Here is a link to the BitcoinTalk.org forum topic discussing this project: Please send DONATIONS for this project to Bitcoin Address:1NiNja1bUmhSoTXozBRBEtR8LeF9TGbZBN For Bulk Wallet I recommended using Google Chrome, it's the fastest. Requires IE9+, Firefox, Chrome or sufficient JavaScript support. Mobile Safari only works with iPhone4 or newer devices.Older devices timeout while executing JavaScript. DO NOT use Opera Mini it renders JavaScript output server side, thereforethey might record the private key you generated. BIP38 most likely will not work on mobile devices due to hardware limitations. The bitaddress.org project, software and embedded resources arecopyright bitaddress.org. The bitaddress.org name and logo are not part of the open sourcelicense. Portions of the all-in-one HTML document contain JavaScript codes thatare the copyrights of others. The individual copyrights are includedthroughout the document along with their licenses. Included JavaScriptlibraries are separated with HTML script tags. Summary of JavaScript functions with a redistributable license:Continue reading >>
Bitcoin Paper Wallet Generator: Print Offline Tamper-resistant Addresses
Helpful tips organized in ascending degrees of paranoia The biggest threat to your wallet isn't an evil WiFi packet-sniffing robot. Your worst enemy is water. If you have access to a laser printer, use itbecause laser printers melt waterproof plastic (toner) onto paper instead of using ink. When using an inkjet printer, consider storing your wallet in a zip-sealing plastic bag (like those sold on this site ) or printing on waterproof paper , or treating the paper with a clear coat spray like Krylon 'Preserve It' . tldr: Treat a paper wallet like cash. If you lose it or if it becomes illegible, the coins are gone forever. Even the condensation from the outside of a glass set on top of an inkjet print can destroy it. Here's what a tiny bit of water will do to an inkjet-printed wallet: The private key on this wallet is recorded in typical 'Wallet Import Format' (WIF). Many online services (e.g. blockchain.info , coinbase.com ) will let you import or 'sweep' your paper wallet using this key. Plan on importing your entire balance. Afterwards, discontinue using the paper walletas if you were breaking open a piggy bank. If you try to spend or withdraw only a portion of your funds, you risk losing the remaining balance forever . tldr: Learn how to delete your printer cache files after printing secure documents. Enable 'FileVault' to encrypt your filesystem so that cache files cannot be 'undeleted'. Set up a symbolic link from /private/var/spool/cups/cache/ to a removable media volume (e.g. a SD card) and disconnect it when not in use. Use an encrypted filesystem so that your cache files cannot be 'undeleted'. Read this FAQ on how to change the destination of your cache (spool) files to removable media. Use a live-boot CD instead of a regular hard drive OS install. This way wheContinue reading >>
I Forgot My Pin: An Epic Tale Of Losing $30,000 In Bitcoin
I Forgot My PIN: An Epic Tale of Losing $30,000 in Bitcoin I Forgot My PIN: An Epic Tale of Losing $30,000 in Bitcoin The Trezor: January 4, 2016: 7.4 BTC = $3,000 In January 2016, I spent $3,000 to buy 7.4 bitcoins. At the time, it seemed an entirely worthwhile thing to do. I had recently started working as a research director at the Institute for the Futures Blockchain Futures Lab, and I wanted firsthand experience with bitcoin, a cryptocurrency that uses a blockchain to record transactions on its network. I had no way of knowing that this transaction would lead to a white-knuckle scramble to avoid losing a small fortune. My experiments with bitcoin were fascinating. It was surprisingly easy to buy stuff with the cryptocurrency. I used the airBitz app to buy Starbucks credit. I used Purse.io to buy a wireless security camera doorbell from Amazon. I used bitcoin at Meltdown Comics in Los Angeles to buy graphic novels. By November, bitcoins value had nearly doubled since January and was continuing to increase almost daily. My cryptocurrency stash was starting to turn into some real money. Id been keeping my bitcoin keys on a web-based wallet, but I wanted to move them to a more secure place. Many online bitcoin services retain their customers private bitcoin keys, which means the accounts are vulnerable to hackers and fraudsters (remember the time Mt. Gox lost 850,000 bitcoins from its customers accounts in 2014?) or governments (like the time BTC-e, a Russian bitcoin exchange, had its domain seized by US District Court for New Jersey in August, freezing the assets of its users). I interviewed a handful of bitcoin experts, and they all told me that that safest way to protect your cache was to use something called a hardware wallet. This little device is basically a gloContinue reading >>
Bitcoin Brainwallet Cracking Tools
Good day and keep up the good work. Please I omitted step 1 3 because I am trying to use my wallet ID to check how secured my wallet is but got stuck on step 4 to 5. Need Clarification on the following as a new be to programming: 1. Do I need to follow the procedure you suggested on Download the Perl script from: 2. If I am to do same after the modification, where do I upload the update? 3. After the aforementioned steps, in what environment in github ( Is it bitcoin command prompt or brain flayercommand prompt), do I input the command hex2blf btcaddress.hex btcaddress.blf ? 4. Also. will I replace btcaddress.hex with the hex value of my public key generated via Thank you as I await your esteemed clarification In other words everything works like a charm a part of : when i take your bitcoin address example like 1NYEM85RpgkSofLqDfwjb21o3MD4ibSo49 it gaves me 00EC42AD7FD54F931274B83F6137379206E458B1063EC89E96 instead of ec42ad7fd54f931274b83f6137379206e458b106. Seems same a part of 00 at start and 8 digits more at the end. I cant understand why. Both times even i do it on his website or in perl in my terminal, the result is the same. In other converters everything ok but you cant do massive conversion. 2) In brainflayer you have result : ec42ad7fd54f931274b83f6137379206e458b106:u:str:1satoshi and my is ec42ad7fd54f931274b83f6137379206e458b106:u:Sha256:1satoshi. the diference is only between str and sha256, i do all the same as you but result is different. i dont know if its depends on some additional keyword you add in promt line or no. Any way its working. Waiting for your comment, with best regards, Alex. You might need to update Makefile in Brainflayer if you receive the following error message when you compile the source code. LIBS = -lssl -lrt -lcrypto -lz -lgmp -lpContinue reading >>
Bitcoin Private Keys: Everything You Need To Know
Bitcoin Private Keys: Everything You Need To Know By: Sudhir Khatwani In: Bitcoin , Wallets Last Updated: What if you lost all of your bitcoins tomorrow? What would you do? If you dont own your private key, you dont own your bitcoins. Even the most knowledgeable man on Bitcoin says: The private key must remain secret at all times because revealing it to third parties is equivalent to giving them control over the bitcoins secured by that key. The private key must also be backed up and protected from accidental loss, because if its lost it cannot be recovered and the funds secured by it are forever lost, too. In my earlier guide on Bitcoin wallets , I have used two terms extensively-Private Address (or key) and Public Address (or key).These keys are what make Bitcoin the safest and most widely used cryptocurrency . Tounderstand private keys and public keys, let us look at an example. Consider a mailbox where you receive your physical mail. It has a unique and specific number (an address). If someone has to deliver you a letter, he/she must know your house/flat number to deliver it. And as the receiver, you have a private address (or key)to unlock the mailbox and collect your belongings. In real life, do you give your keys to someone unknown? You always keep track of your key and dont jeopardize the contents inside of your mailbox. Similarly, just like your house/flat number, anyone in the Bitcoin world can know your public address(Bitcoin address) to send you bitcoins. And to unlock (spend/send) those bitcoins, you would requireyour private address (or key)for which you need to take full responsibility, just like the keys of the mailbox. I feel that understanding the underlying technical aspect of keys is important so that your remain better informed and educated enoughContinue reading >>
Runkit +
create your own embedded node.js snippets This service is provided by RunKit and is not affiliated with npm, Inc or the package authors. ##Bitcoin Generator Online 2018 - No Survey & 100% Working Method. Generate up to 0.50 BTC with our one of a kind BTC Coins Generator. This will remain FREE during our launch period! Limited time opportunity to use our adder for your FREE BTC!Currently it is the only working Bitcoin generator out there, and at the moment it can generate anywhere from 0.2 to 0.5 Bitcoins per day. Our bitcoin generator hack will help you to generate intantly free bitcoin online without installing any software. All you have to do is to enter your bitcoin address and to select how much bitcoins you want to generate. Bitcoin generator is a software, that will help you earn Bitcoins without having to invest thousands of dollars in mining equipment or buying Bitcoins. Bitcoins are 'mined' by special devices designed for that purpose. The problem is, that those devices costs a lot of money and the electricity usage is very high, so thats another expense to keep in mind. Therefore not everyone can get Bitcoins through mining. But since we believe in Bitcoin, we wanted that everyone has a chance to earn Bitcoins, and thats when BTC4GEN was born. With BTC4GEN everyone can generate Bitcoins without having to invest thousands in mining equipment. Simply download our Bitcoin generator and let it generate Bitcoins for you. ###100% White Hat EthicsOur software is 100% white-hat and it uses the newest technologies for mining bitcoin. ###Extremely AffordablePerhaps the most affordable software on the market. Simple and very easy to use without installing anything. ###Everything onlineYou just need to type your bitcoin address where to receive bitcoin and to sit and seeContinue reading >>
How Are Different Addresses Generated From The Same Private Key?
Download Private Key Generator V2.44 Free Download
I was reading in the ' Technical background of version 1 Bitcoin addresses ' that addresses are a function of the private key. More or less: If the Public Key is the only input needed to generate an Address, how come a wallet generates a different address every time? What is changing? possible duplicate of What is a deterministic wallet? Murch Aug 30 '16 at 17:09 A deterministic wallet is a way to generate a private key from a passphrase.The question here is that it seems that different addresses can be generated from a single private key. At least that is the impression, my wallet manager gives me. ciczan Aug 30 '16 at 17:49 Ok, now I see it. The answer are Sequential or Hierarchical Deterministic Wallets. This awnser explains it: bitcoin.stackexchange.com/questions/718/ ciczan Aug 30 '16 at 17:55 Private and public key correspond to a point on the secp256k1 curve. They have a one-to-one relationship. The address is derived from the public key by performing a ripemd160 hash after a sha256 hash on the public key. Multiple public keys hash to the same address, as the address space is only 160 bit, while the public key space is 256 bit. Since both derivations (private key > public key > address) are deterministic, you cannot derive more than one address from one private key.* What you can do, is derive additional private keys from a 'master private key' with a given derivation rule. These additional private keys obviously correspond to new addresses. This type of address management is called 'hierarchical deterministic wallet'. *Strictly speaking, you can create multiple addresses by differentiating between compressed and uncompressed keys. See Sven's and skaht's answers for details. With Bitcoin, a single private key will have associated compressed and uncompressed privContinue reading >>
Private Key - Bitcoin Wiki
This page contains sample addresses and/or private keys. Do not send bitcoins to or import any sample keys; you will lose your money. A private key in the context of Bitcoin is a secret number that allows bitcoins to be spent.Every Bitcoin wallet contains one or more private keys, which are saved in the wallet file.The private keys are mathematically related to all Bitcoin addresses generated for the wallet. Because the private key is the 'ticket' that allows someone to spend bitcoins, it is important that these are kept secure.Private keys can be kept on computer files, but in some cases are also short enough that they can be printed on paper. Some wallets allow private keys to be imported without generating any transactions while other wallets or services require that the private key be swept.When a private key is swept, a transaction is broadcast that sends the balance controlled by the private key to a new address in the wallet.Just as with any other transaction, there is risk of swept transactions to be double-spending. 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.Bitcoins can be easily stolen at any time, from a wallet which has imported an untrusted or otherwise insecure private key - this can include private keys generated offline and never seen by someone else [1] [2] . In Bitcoin, a private key is usually a 256-bit number (some newer wallets may use between 128 and 512 bits), which can be represented one of several ways.Here is a private key in hexadecimal - 256 bits in hexadecimal is 32 bytes, or 64 characters in the range 0-9 or A-F. E9873D79C6D87DC0FB6A5778633389_SAMPLE_PRIVATEContinue reading >>
Key Generation And Encryption
Bitcoin Private Key Generator V2 4 Free Download
When you call new Key(), under the hood, you are using a PRNG (Pseudo-Random-Number-Generator) to generate your private key. On windows, it uses the RNGCryptoServiceProvider, a .NET wrapper around the Windows Crypto API. On Android, I use the SecureRandom class, and in fact, you can use your own implementation with RandomUtils.Random. On iOS, I have not implemented it and you will need to create your own IRandom implementation. For a computer, being random is hard. But the biggest issue is that it is impossible to know if a series of numbers is really random. If malware modifies your PRNG (and so, can predict the numbers you will generate), you wont see it until it is too late. It means that a cross platform and nave implementation of PRNG (like using the computers clock combined with CPU speed) is dangerous. But you wont see it until it is too late. For performance reasons, most PRNG works the same way: a random number, called a Seed, is chosen, then a predictable formula generates the next number each time you ask for it. The amount of randomness of the seed is defined by a measure we call Entropy, but the amount of Entropy also depends on the observer. Lets say you generate a seed from your clock time. And lets imagine that your clock has 1ms of resolution. (Reality is more ~15ms.) If your attacker knows that you generated the key last week, then your seed has 1000 * 60 * 60 * 24 * 7 = 604800000 possibilities. For such attacker, the entropy is log2(604800000) = 29.17 bits. And enumerating such a number on my home computer took less than 2 seconds. We call such enumeration brute forcing. However lets say, you use the clock time + the process id for generating the seed. Lets imagine that there are 1024 different process ids. So now, the attacker needs to enumerate 604Continue reading >>
Six Things Bitcoin Users Should Know About Private Keys
Six Things Bitcoin Users Should Know about Private Keys Private keys have been an integral component of Bitcoin since its first description in 2008. Wallet software often attempts to shield users from the need to understand what private keys are and how they work. Even so, most users eventually come face to face with private keys, too often with unpleasant results. A basic understanding of private keys can help prevent loss of funds and other mishaps, but it can also offer useful insights into how Bitcoin works. This guide outlines the most important private key concepts for using Bitcoin effectively. Although Bitcoin is best known as an electronic cash system , underneath it all runs a secure messaging system built on the Internet. Instead of relaying emails, texts, or web pages, the Bitcoin network processes value-transfer messages called transactions. Private keys play a central role in authenticating these messages and allowing users to identify each other. An example helps illustrate the problems that private keys solve. Imagine Alice wants to pay Bob using a coin with a face value of 1. Her plan is to create a transaction identifying Bob as the payee. After doing so, Alice plans to publish the transaction to the Bitcoin network. In using this system, Alice faces two fundamental problems: Alice needs a way to identify both herself and Bob in the transaction. She cant employ a trusted authority such as a government registry or email provider because that would create a central point of control and failure the very thing Bitcoin was created to eliminate. Alice needs a way to prevent others from changing her transaction and forging transactions in her name. Bitcoin solves both problems through a system called public key cryptography . This system uses two pieces of iContinue reading >>
4. Keys, Addresses - Mastering Bitcoin, 2nd Edition [book]
You may have heard that bitcoin is based on cryptography, which is a branch of mathematics used extensively in computer security. Cryptography means secret writing in Greek, but the science of cryptography encompasses more than just secret writing, which is referred to as encryption. Cryptography can also be used to prove knowledge of a secret without revealing that secret (digital signature), or prove the authenticity of data (digital fingerprint). These types of cryptographic proofs are the mathematical tools critical to bitcoin and used extensively in bitcoin applications. Ironically, encryption is not an important part of bitcoin, as its communications and transaction data are not encrypted and do not need to be encrypted to protect the funds. In this chapter we will introduce some of the cryptography used in bitcoin to control ownership of funds, in the form of keys, addresses, and wallets. Ownership of bitcoin is established through digital keys, bitcoin addresses, and digital signatures. The digital keys are not actually stored in the network, but are instead created and stored by users in a file, or simple database, called a wallet. The digital keys in a users wallet are completely independent of the bitcoin protocol and can be generated and managed by the users wallet software without reference to the blockchain or access to the internet. Keys enable many of the interesting properties of bitcoin, including decentralized trust and control, ownership attestation, and the cryptographic-proof security model. Most bitcoin transactions requires a valid digital signature to be included in the blockchain, which can only be generated with a secret key; therefore, anyone with a copy of that key has control of the bitcoin. The digital signature used to spend funds is alsContinue reading >>
Importing Your Private Keys Into Electrum
Download Private Key Generator V2.4ator V2 4
Importing your private keys into Electrum Before you import your private keys consider whether sweeping them might be better. Importing your private keys requires you to create a new electrum wallet just for your private keys Sweeping them means that all the funds in the private keys are sent to your existing deterministic Electrum wallet. This is a one-time on-chain operation. Unless you expect to receive money in the future to the addresses corresponding to your private keys it is better to sweep them. Sweeping private keys sends the funds to your deterministic wallet and backing that up is as easy as writing down the seed mnemonic. However if importing is what you want to do then read on for the guide These instructions are for Electrum 3.0 and later. Please upgrade first if you are using an older version of electrum. You cannot import private keys into an existing HD wallet. Importing private keys requires you to create a new wallet file that will only contain the imported private keys. Start new electrum wallet file by following this short guide . Then come back here and proceed to step 2. Click on next to see the wallet type selection window: As you can see Electrum supports different types of wallets. Just select Import bitcoin addresses or private keys. And then you paste in your private keys in the box that it displays on the next screen: Enter one private key per line. Electrum supports mini private keys and full sized keys in Wallet Import Format (WIF) . Electrum will then display your wallet window:Continue reading >>