How to make bitcoin paper wallet

How to Create a 99.9% Secure Bitcoin Paper Wallet

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In the most specific sense, a paper wallet is a document containing all of the data necessary to generate any number of Bitcoin private keysforming a wallet of keys.

However, people often use the term to mean any way of storing bitcoins offline as a physical document.

This second definition also includes paper keys and how to make bitcoin paper wallet codes. A paper key is a single key written on paper that is used multiple times like a wallet this is how to make bitcoin paper wallet discouraged. A redeemable code is a single key intended to be funded and "redeemed" only once: Storing bitcoins on paper wallets is not safe unless very strict how to make bitcoin paper wallet precautions are undertaken during their initial preparation.

Generating paper wallets is not recommended from an online PC. Malware malware on the PC may be able to steal your paper wallet keys. For additional security paper wallets can be split into shares, requiring X of Y shares e. By creating a keypair, one can store bitcoins on a physical medium to be left as how to make bitcoin paper wallet tip or a gift. The recipient then sweeps the private key to their own wallet. A trusted provider can hide the private key inside a tamper-resistant token, and issue them as a how to make bitcoin paper wallet of bitcoins.

This requires those who accept it as payment to trust that when the provider produced the tokens, they loaded them with the correct amount of bitcoins, and that they have not been tampered with since then. To redeem the bitcoin value, the token must be destroyed to access the private key. Often a bitcoin address is embedded on the outside visible, but there is no guarantee without destroying the token that this matches the private key inside, or, even if it does, that the private key is not replicated on multiple tokens or saved by the producer.

Proper paper wallets are often how to make bitcoin paper wallet very secure way of storing bitcoins, since they are not typically exposed to malware.

They can also be easily stored securely in safes and safe deposit boxes. However, it may be more difficult to securely "backup" paper wallets, and due to the current sub-optimal software support, it may be easier to make a mistake that causes loss of bitcoins. Sometimes people try to use single keys as true bitcoin wallets. However address reuse is very bad for privacy and security.

Because of this, one is forced to choose between hazardous options:. Therefore, it is highly recommended that you use proper paper wallets which allow you to generate an infinite number of addresses from a single seed. Proper, multi-key paper wallets usually take the form of a multi-word HD wallet seed mnemonic. The list of several words corresponds to some binary data that is used to generate all of the addresses. Words are used to make it easier to avoid and correct errors.

Trying to memorize an entire how to make bitcoin paper wallet mnemonic is very difficult and is generally not recommended. A single key for use in insecure single-key paper wallets or redeemable codes can be represented in several formats, but typically the Wallet Import Format WIF is used, since keys represented that way are very short 51 characters and thus easy to re-enter when importing or "sweeping" it for withdrawal.

The private seed is used to prove your right to spend the bitcoins transferred to the paper wallet, and as such should be kept hidden and secret. If the private seed on a paper wallet is exposed for example in a photograph then the wallet may be used by anyone who sees it. To guard against accidental revelation, the private key displayed on the paper wallet may be encrypted or split into several different parts for example using Shamir's secret sharing scheme.

At the very least, the private key should be well hidden e. Currently, at least Armory and Electrum support generating mnemonic codes for their wallets, which can be written down or printed to make a multi-key paper wallet. Several tools exist for producing single keys, including Bitcoin Address Utilityvanitygenand Cwallet.

Again, using single keys for anything except one-time transfers of bitcoins is strongly discouraged. Even with careful code auditing, browser plugins or other websites may compromise the environment. Some advanced printers have internal storage even hard drives that preserve copies of printouts. This is a risk if someone gets access to your printer, or if you dispose of your printer.

There is also the possibility that a smart enough printer can be hacked. Consider StuxNet which was able to rewrite the firmware of non-computer devices indirectly connected to the Internet If this concerns you, use a "dumb" printer, and never let your printer have access to the Internet or to an Internet-connected computer.

An alternative using a printer for paper wallets is to write the private key and address with your own hand. Base58Check encoding used for Bitcoin addresses and private keys specifically excludes characters that look similar like 0OIl.

The mnemonic recovery seeds used by how to make bitcoin paper wallet like Armory and Electrum are also suitable to be written by hand. Paper keys, when used as wallets, are very different from wallets such as Bitcoin Core in that there is only one address in a paper key rather than a hundred or more online keys that are managed with full software assistance from Bitcoin Core. Note that importing a private key that may be compromised can result in the entire wallet becoming insecure.

For this reason, sweeping or sending the entire amount to a fresh address is generally recommended over plain importing. Because paper wallets only record the private key and address, wallet software which redeems the bitcoins must somehow learn about the balance of the wallet before being able to spend it. The solution with the best privacy properties is to import the private key into bitcoin-qt and rescanning. Nobody watching the bitcoin-qt full node from outside will be able to tell which address it's interested in because all the scanning happens locally on disk.

Unfortunately rescanning is quite slow, so most users are pushed towards using public blockchain explorers or Electrum servers. An address database created from all bitcoin addresses is nearly 1 terrabyte in size at of April and takes a long time to build up, so very few people will have this kind of thing locally for the few occasions when they redeem paper wallets. Almost all wallet software today especially smartphone wallets relies on centralized lookups when redeeming paper wallets.

This is another reason paper wallets are not recommended, the way that they function pushes people to ruin their own privacy. Retrieved from " https: Navigation menu How to make bitcoin paper wallet tools Create account Log in.

Views Read View source View history. Sister projects Essays Source. This page was last edited on 3 Aprilat Content is available under Creative Commons Attribution 3. Privacy policy About Bitcoin Wiki Disclaimers.

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First of all - here is the list of things that you might want to prepare before moving to step by step tutorial:. After you are done downloading plug in USB stick 2, open the folder where you have previously downloaded USB Installer and double-click on it. Inside the USB Installer:. After you hit "create" Ubuntu will be installed on your flash drive. Safe the changes and reboot.

Select "Try Ubuntu without installing" and wait until the OS finishes the booting sequence. Now you are in the Ubuntu desktop and after making sure that you are not connected to internet top right corner - there is WiFi indicator you can start to generate the seed. Plug in your USB stick 1 with the webpage copy on it - a window should autmatically pop up.

If that is not the case - click on the third icon "Files on the Dock on the left side. As you can see - the whole thing works even without the internet connection. So now move the cursor around the page to randomly generate your seed. When you are done a page with two QR codes and some options should appear. Choose "Paper Wallet" and select the amount of copies you want to make.

You can also secure your wallet with "BIP38 encryption" by entering a unique passphrase for your wallet this step is not mandatory. After that click on "Print" which in our case is more like "Save" button. After that choose to safe your file onto your USB stick under the name: One issue that I've encountered is that the default size of the wallet in that PDF file is pretty small and thus for some devices it might be problematic to scan the codes on it.

So what I prefer to do is to press PrtSc Print Screen button on my keyboard to make a screenshot of the file, then paste it into Paint program, crop it and save it as a picture again on USB stick - no files shall ever touch the hard drive of your computer!

That's how it's done: I do not recommend to use this wallet for payments, daily usage, etc. Also make sure that you have more of these copies as a back up!

If you have more paper copies and a digital copy - your founds are safe and secure! I hope you enjoyed this step-by-step tutorial - if you liked it do not forget to upvote, resteem and follow me for more cool tutorials! Give me some feedback in the comment section and tell me - what do you do to store your Bitcoins safely? Well hrhabibur , if I find something forth upvoting on your blog page - I will upvote: Paper bitcoin wallets are one of the safest ways to store your Bitcoin cuz you cannot hack the paper, right?

If the wallet is generated offline in the right way. In this tutorial I will show you how to create one in the safest way possible even if your PC is infected with a virus or is monitored by a hacker - nobody will gain access to your paper wallet. So without the further do - let's get started! First of all - here is the list of things that you might want to prepare before moving to step by step tutorial: In order to create a paper wallet you need to generate random mnemonic seed via a web page called: But we want to do it as safe as possible remember?

So instead of generating the seed in your browser just right-click on the webpage and select: A window will pop up - make sure you save the web page as "Webpage, complete". That will make the webpage accessable even wihout the internet connection.

Save or move this webpage to your USB stick 1. Now you have to download: Inside the USB Installer: Ubuntu choose your 2nd USB stick as a medium find a path to your Ubuntu ISO file format the USB drive to make sure that the flash disk is clean and ready for OS installation The final picture before installation execution should look like this: Google is your friend on this one: That's how it looks like on my PC Step 4: Now you should enter the USB boot and the Ubuntu boot options should be displayed: After you boot back to your Desktop environment make sure that all the internet connection is closed.

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