Topic: The official BitcoinPaperWallet.com thread -- updates and news. - page 2. (Read 55974 times)

This weekend I had a couple days off for Father's day, so I finally implemented some features I've had on the back-burner for a few months. Here's what's new:

• The background pattern ("guilloche") is algorithmically determined by the first 8 chars of the public key. This way each and every paper wallet looks a little different. I like how this reflects the significance of every public key (your wallet) being unique. Good teaching point when you're giving these away. If you don't like the pattern you get, just hit the "generate new key" button a few times, or roll your own with dice, etc.
• By popular demand: BIP38 encrypted wallets now have a different color (blue stripe) so you can tell at a glance which wallets are encrypted and which aren't.
  
• Also by popular demand: when printing a wallet, you have an option to add a denomination that shows on the front, e.g. 1 BTC, 250 mBTC, etc. Nice for gifts. You can also turn off the back side instructions and deposit notes if you prefer to have that space for writing a personal message or password hint.
• Additional languages: Hebrew, Japanese, and Swedish for a total of 13 languages. Also, languages are dynamically rendered in HTML now instead of using huge JPG images, so the github download size will shrink considerably.
• Minor changes to graphic design. On the whole, a bit more elegant and currency-like. After all, the more valuable these look, the less likely they are to be thrown away by the person going through your personal affairs when you die...

You can try out the beta here: https://bitcoinpaperwallet.com/beta/generate-wallet.html

Thanks in advance for any feedback. Contact me directly if you'd like to submit additional translations.











You can try out the beta here: https://bitcoinpaperwallet.com/beta/generate-wallet.html

Possible, but not automatic. You can print two wallets per page, either with the same keys or different keys, your choice. See "Can I print two per page" at: https://bitcoinpaperwallet.com/printing-and-paper-tips/

Also on the other side of the paper too, behind the actual private key.

Hello,

It is nearly inconceivable that any address you generated using bitcoinpaperwallet.org (or bitaddress.org) will ever collide with another address, whether generated online or offline. Each time you generate an address, it's like taking a 16-sided die and rolling it 16 times. For a duplicate address to be generated (a "collision") someone else would have to roll the exact same 16 numbers in the exact same order.

Meanwhile, the bitaddress.org random number generator is continually being improved to add more "entropy" to guarantee more and more random results since generating truly random numbers is tricky on a computer, and the authors want to circumvent any weaknesses inherent to either the web browser or the operating system.

WOW. Now if my last question is stupid, forgive me - so what if all of us printed, moved our mouse and generated addresses OFFLINE, is there any chance that this webapp generate an identical address keypair that already exists out there? How will it countercheck the newly gen. address with an existing one?

Thank you very much and more prosperity may come your way.

Sent an email

Hi Charles. My email, PGP public key etc. are all at http://cantonbecker.com

Send me your contact details:

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: OpenPGP.js v.1.20130820
Comment: http://openpgpjs.org

xsFNBFJugc0BEACv91Xph3RKSGfx4n0ESfGWBNOnafhRE+jhwd4lnDM4XYmO
30syetB6QMx/35fPpfLHMPa0NjhhMrU8KLz4VC1RZvtoDSmvocMFLxmcJD2W
/iT/1lXp9jv9L67ALovDUdn2QgRCSbDaXaeCutbFcLQxQ8UtrG+FBCSmst7O
qX9XfaWgD2OdficDENS3GFpNtoK1YT403s7EG3PgjD/+PoqY9WMjlWoDOuic
WLzSkW82NgfET5T8RsA2pYuf/Eu2GMF24Y6vrD1OTtH7kXDU5pswEoCblItA
DtCbbMAUJhGnHFtYIHDxLbCcL2eHIrGXcMgQ20y3dAEoDFAe34D5ERxfe7jy
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y6J8KvTHXNF0oFSaQYjUygmjdlwFExiTRW+b12nPO1i3YvwXc4Bt1A==
=gQFQ
-----END PGP PUBLIC KEY BLOCK-----

Thanks both for the mention and the heads up. BTW you might contact me privately to stay on top of what's brewing this week: a live-boot ubuntu CD with the bitcoinpaperwallet.com software pre-installed on the desktop. Should substantially simplify printing safe paper wallets, even for people who aren't used to linux.

Hi,

Just this week I adjusted the software so that it starts to automatically set the zoom/shift for known combinations of browsers and operating systems. Unfortunately, I can't auto-detect printers, so that's always going to be up to you. If I get enough feedback from folks, I'll definitely put together a searchable database.

Canton, I justed wanted to give you a heads up that I'm mentioning your website and wallet in the CSL refresh coming out next week. You might get a really big spike in traffic (we have almost 15,000 students).

I think BIP38 is the last thing I need. I don't have access to a printer at home so I need to print it out at work. Even though I'm fairly confident no one will suddenly find ONE PDF of the thousands of pages that get printed a day with my private key, it's still better if it's encrypted. Plus, this way I feel better about having multiple backups, such as storing a PDF version.

Canton/all, is there a list of settings for various printers? I love the wallets, but the calibration process is quite slow on the printer I am using (Brother 4040). As soon as I get it tweaked in, I will offer the Zoom/Horizontal that worked.

Hi there,

As of today, the latest version of bitcoinpaperwallet.com is December 3, and it folds in some of the changes apparent in the very latest bitaddress.org (v2.6.5) -- however there are two significant differences:

1) For simplicity, I don't include many of extra features of bitaddress.org (brain wallets, bulk wallets, BIP38)

2) I do include a potentially stronger random number generator, provided you are using a modern enough browser. (Mostly anything but IE.) bitaddress will likely fold this RNG into their code soon, there's already a change request in place.

I have not looked at the source code. However, I ran the generator offline on an airgapped computer and printer (has never been connected to the Internet, and never will be even in the future). So unless there is an obvious exploit in the code I trust that it's secure.

I didn't do sample deposits. My reason for having 10 wallets rather than one big one is that in the incredibly small chance that someone has an address collision with me (yeah I've seen all the graphs showing how small the odds are), I'd rather they only take 10% of my money rather than 100%.

Are you fairly secure about the paper wallets not being hacked?  Did you deposit only one time per paper or did you do a sample amount first before every paper?

I have 10 of them in my bag (the free one that came with the stickers) and there's heaps of spare room. I think you could probably get 50 in there, maybe even more.

Hello, canton, on which version of bitaddress is the current bitcoinpaperwallet site based?? THank you very much

The BIP 38 wallet design above is great, especially the matching, numbered private key for a safe deposit box etc.

An option for the "old" design, with a sealed encrypted key would be good too. Anyone with physical access to the wallet might have a better than random chance at guessing the owner's password, or could just snap a picture of it and run a dictionary attack at their convenience.

The xmas themed wallet is very nice!
 

Hey, Canton.

May I ask approximately how many wallets can fit in one bag (the ones in your website)?

Just curious as I might colour-code the wallets by sticker colour.