2012-12-12T12:17:34Z

Kangasbros:

A '''paper wallet''' is a way to store Bitcoins that involves printing the Bitcoin addresses and private keys directly on a piece of paper. When done properly, paper wallets are one of the safest ways possible to store Bitcoins.

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A Bitcoin [[private key]] can be represented in several formats, but is typically a string of numbers and letters no more than about 51 characters in length. This is easy to print on paper, and if kept secret, can securely hold an unlimited quantity of Bitcoins.

==Producing safe paper wallets==
Several tools exist for producing paper wallets, including [[pywallet]], [[vanitygen]], [http://bitaddress.org/ Bitaddress.org], [[LinuxCoin]], and [[Bitcoin Address Utility]]. Paper wallets must be produced securely in order to be safe, because any leak of the private key constitutes the ability for an attacker to steal any present and future balance of the address. Consider the following:
* Paper wallets should be produced on a computer not connected to the Internet.
* Be aware that malware often allows a remote third party to view your screen and see your keystrokes, and these can compromise the integrity of your paper wallet. Also consider that antivirus software cannot completely rule out the possibility of malware. However, using bootable CD's prevents the vast majority of malware from being able to run. If you can generate a paper wallet with a bootable CD such as [[LinuxCoin]], the likelihood of malware being able to compromise your keys is very low.
* The private keys of paper wallets should never be saved to a computer hard drive. You should also never scan your paper wallet into your computer or type the private keys or save them in e-mail, except at the moment you are redeeming the balance.
* A web-based paper wallet generator should be written so that all of the generation happens on your computer, not the web server. After you load the paper wallet generating website in your web browser, you should disconnect from the internet, and observe that the paper wallet generator continues to function. Afterward, you should close your browser before reconnecting to the internet.
* A paper wallet generator should use an appropriate source of random numbers (entropy). This means that the generated addresses aren't predictable. If the addresses come from a predictable or partially-predictable pattern, someone else who can predict the pattern addresses can steal the balance. A safe way to generate addresses is from a passphrase, where you provide a very long unguessable passphrase (at least thirty characters - even if it is just mashing random characters on the keyboard). This way, you as the user are in control of the randomness and potential predictability of the addresses.

===Printer Security===

Some printers will store the output using storage in which the data can be recovered from the printer's memory or from a hard drive (if the printer has one) and stores its print jobs there. Most larger commercial printers have hard drives but whether or not documents are stored on them will vary based on manufacturer and model.

==Redeeming Keys==

There are various methods for copying the private key data from a paper wallet to other wallets. [[BlockChain.info]] and [[Armory]] can import them directly into wallets. [[MtGox|Mt. Gox]] provides the ability to Add Funds using a private key. The exchange will then create a "sweep" transaction that spends any amount for that paper wallet address so that the amount is added to your account with them. They will also sweep to your account any bitcoins received to that address in the future as well.

Those running the Bitcoin.org ("Satoshi") client can import paper wallet addresses using the [[Pywallet]] utility. Other [[:Category:Clients|clients]] may allow this as well, including the Javascript-based wallet called My Wallet from [[BlockChain.info]] which can import Bitcoin private keys as well.

Since 0.6.0, key import/export are available in the client itself, you can use is via RPC. The commands are ''dumpprivkey'' and ''importprivkey''. For encrypted wallet, you need to use ''walletpassphrase'' to decrypt temporarily in memory before importing or exporting. Note that bitcoind will rescan the block data when importing each key now, this process takes about one minute or two, depending on your CPU performance. See [[How to import private keys]] for more info.

==See Also==

* [[Private key]]

* [[Securing_your_wallet#Paper_Wallets]]

* [[How to import private keys]]

* [http://localbitcoins.blogspot.fi/2012/11/start-your-own-money-press.html Guide to paper wallets]

[[Category:Security]]

[[es:Monedero de papel]]

Paper wallet

2012-12-12T12:16:43Z

Kangasbros:

Easywallet.org

2012-12-03T12:51:37Z

Kangasbros: /* Features */

A hosted [[EWallet]] in which all that is needed to access and spend the funds in the wallet is the website address (URL). Also referred to as Easy Wallet and EasyWallet.

This allows the service to be used anonymously, without needing even an e-mail address. The site includes a caveat warning about its use:
Easywallet.org does not aspire to be a Bitcoin bank and as such can only provide a medium level of security.
Please do not store more than some spare change here.

==Features==

* Web wallet
* Mobile app
** Works with [https://easywallet.org/bitcoin_for_iphone iPhone]/[https://easywallet.org/en/bitcoin_for_android Android] devices with QR Code scanning
* [https://easywallet.org/en/bitcoins_via_email Send bitcoins to any email address securely]
** Fresh wallet with the funds is created and the link is send to the receiver. If the receiver doesn't access the URL within two weeks, funds are returned to the sender.
** Email address not stored on the server, only used for sending the email.
* Easy to use currency conversions.
* [https://easywallet.org/coupons Coupons]
** Create coupons nominated in any currency (EUR, USD, etc)
** Currency conversion done when the coupon redeemed
** Perfect for selling bitcoins for cash and vending machines
* Dead man's switch
** After defined period of inactivity, bitcoins will be sent to predefined address

==History==

The site was announced on April 6, 2012<ref>[https://bitcointalk.org/index.php?topic=75665.0 Easywallet.org - web based wallet, iPhone/Android clients with QR Codes]</ref>.

==See Also==

* [[Anonymity]]
* [[Instawallet]]

==External Links==

* [https://easywallet.org EasyWallet.org] Website (create new wallet)
* [https://easywallet.org/faq EasyWallet.org] FAQ
* [https://github.com/kangasbros/Easywallet.org-tools Easywallet.org-tools] project on GitHub
* [https://github.com/nikla/bitcoin_spammer bitcoin_spammer] How to use easywallet.org API to spam bitcoins to multiple email addresses
* [https://easywallet.org/bitcoin_for_iphone Easywallet.org iPhone HOWTO]
* [https://easywallet.org/bitcoin_for_android Easywallet.org Android HOWTO]

==References==
<references />

[[Category:eWallets]]
[[Category:Mobile]]

2012-06-03T08:18:50Z

BitcoinApp

2012-04-07T07:17:24Z

Kangasbros:

An implementation of BitCoin for iOS devices (iPhone, iPad, iPodTouch).

The App acts as a client and communicates using the regular RPC-JSON with bitcoind which runs on a separate thread inside an App. The wallet is thus stored on the device.

==History==

The project was announced on April 8th, 2011<ref>[http://www.bitcoin.org/smf/index.php?topic=5550.0 free source for bitcoin iPhone App]</ref>.

==External Links==

* [http://github.com/udibr/bitcoinApp bitcoinApp project] on GitHub
* [https://easywallet.org Easywallet.org] - easy to use web based wallet, which works on iPhone

==References==
<references />

[[Category:User Interfaces]]
[[Category:Frontends]]
[[Category:Open Source]]
[[Category:Mobile]]

Easywallet.org

2012-04-06T09:36:17Z

Kangasbros:

https://easywallet.org/ is a e-wallet.

Features:

- Works with iPhone/Android devices with QR Code scanning

- Easy to use currency conversions

Tools: https://github.com/kangasbros/Easywallet.org-tools

[[Category:eWallets]]

Easywallet.org

2012-04-06T09:35:15Z

Kangasbros: Created page with "https://easywallet.org/ is a e-wallet. Features: - Works with iPhone/Android devices with QR Code scanning - Easy to use currency conversions Category:eWallets"

https://easywallet.org/ is a e-wallet.

Features:

- Works with iPhone/Android devices with QR Code scanning
- Easy to use currency conversions

[[Category:eWallets]]

Instawallet

2012-04-06T09:34:24Z

Kangasbros:

https://www.instawallet.org/ is a e-wallet.

Competitor with more & better features: [[easywallet.org]]

[[Category:eWallets]]