osmosis
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
December 20, 2011, 06:14:47 AM |
|
Bitaddress Bill Sized PDF Goal: Creating a bounty proposal to get a PDF print out option in the bitaddress javascript bitcoin address generating software that allows for the easy creation of paper wallets which are dollar bill sized so they can fit in wallets, and has a good design or multiple design choices. This is also a call for sponsors for this bounty. Specifications: Print outs will come in the same size as US dollar bills, or about 6.5cm by 15.5cm. (Could also consider paper currency sizes for other countries.) Design layout does not in any way need to resemble US bills. Just the same size is needed so that they fit in wallets. Some basic usage instructions should be included in the layout, or a url for info. Something cool looking enough that I could get my friend to accept them. Two-part printout. Have one segment for an "invoices" with the Public Key only, and a second bill with both the Public Key and the Private Keys. Usage: Private key would be exposed. For hand to hand exchanged between trusted parties. If for use between parties with lack of trust, amount can be withdrawn from the paper using a mobile phone in realtime...like an instant check deposit, and the paper bill can be discarded. Text: This note allows you to access stored money. If private key may have been disclosed, you should retrieve the money immediately. Anyone who has had to this note may retrieve the money first. To learn more about bitcoins go to: weusecoins.org or lovebitcoins.org Bitcoin Address: 1xxxx Use this address to send more money to this address. Private Key: 5xxxx Import this key to retrieve the stored money. Best printed on paper that's cotton based 50% or better and acid free. Use in conjunction with bitcoinnotify.com ( sponsor? ) Resources: bitaddress.org printcoins.com http://bitbills.com/https://github.com/pointbiz/bitaddress.orghttps://bitcointalk.org/index.php?topic=43496 (bitaddress discussion) https://bitcointalk.org/index.php?topic=43496.msg538311#msg538311 (sgornick paper PoS) For international cash paper sizes: http://www.dirjournal.com/info/cool-money-collection-from-around-the-world/
|
|
|
|
casascius
Mike Caldwell
VIP
Legendary
Offline
Activity: 1386
Merit: 1140
The Casascius 1oz 10BTC Silver Round (w/ Gold B)
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
December 20, 2011, 07:39:40 AM Last edit: December 20, 2011, 07:58:33 AM by casascius |
|
Bitaddress Bill Sized PDF
Goal: Creating a bounty proposal to get a PDF print out option in the bitaddress javascript bitcoin address generating software that allows for the easy creation of paper wallets which are dollar bill sized so they can fit in wallets, and has a good design or multiple design choices. This is also a call for sponsors for this bounty.
I know there aren't too many fans of Microsoft here, but this is something I could do in 10 minutes with Microsoft Access and amateur skills. 1. Create CSV file at Bitaddress.org 2. Import it into a new table in Microsoft Access using the built-in csv import wizard 3. Use the report wizard to turn it into a report 4. Manipulate the report in "design view" so it formats it like a check, three or four to a page, including pasting images and text and shapes so each check is identical except for the per-piece things you want different. I suppose getting the QR code right is a minor obstacle. Not that it can't be overcome, but it does push it slightly past amateur. MS Access uses "ActiveX" to embed third party stuff in their reports - A quick Google search shows there's an ActiveX QR code generator which is payware, but probably has a 14-day trial - long enough to pump out a huge batch of these items before trashing the OS (you are using a throwaway OS to generate this stuff with no internet, and wiping the drive when done, right?) (Same thing goes for MS Office, which is payware, but is offered as a free trial download and/or gives you a similar grace period). One such company gives a step by step on how to use their widget to get barcodes into a report... so it doesn't seem too difficult... http://www.barcodetools.com/faq/barcode-activex/using-barcode-activex-in-ms-access-2007.html
|
Companies claiming they got hacked and lost your coins sounds like fraud so perfect it could be called fashionable. I never believe them. If I ever experience the misfortune of a real intrusion, I declare I have been honest about the way I have managed the keys in Casascius Coins. I maintain no ability to recover or reproduce the keys, not even under limitless duress or total intrusion. Remember that trusting strangers with your coins without any recourse is, as a matter of principle, not a best practice. Don't keep coins online. Use paper or hardware wallets instead.
|
|
|
casascius
Mike Caldwell
VIP
Legendary
Offline
Activity: 1386
Merit: 1140
The Casascius 1oz 10BTC Silver Round (w/ Gold B)
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
December 20, 2011, 07:50:17 AM |
|
I am replying to the same message a second time with a second idea...
it ought to be trivial to modify Bitaddress.org to make checks, simply by using CSS and javascript to change the "paper wallet" screen into individual checks... which then you could just print out.
I happen to own Adobe Acrobat, so I suppose that makes PDF easy, but surely there's got to be free print-to-PDF solutions out there, and it looks built in to Macs...
|
Companies claiming they got hacked and lost your coins sounds like fraud so perfect it could be called fashionable. I never believe them. If I ever experience the misfortune of a real intrusion, I declare I have been honest about the way I have managed the keys in Casascius Coins. I maintain no ability to recover or reproduce the keys, not even under limitless duress or total intrusion. Remember that trusting strangers with your coins without any recourse is, as a matter of principle, not a best practice. Don't keep coins online. Use paper or hardware wallets instead.
|
|
|
osmosis
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
December 20, 2011, 08:00:24 AM |
|
I am replying to the same message a second time with a second idea...
it ought to be trivial to modify Bitaddress.org to make checks, simply by using CSS and javascript to change the "paper wallet" screen into individual checks... which then you could just print out.
I happen to own Adobe Acrobat, so I suppose that makes PDF easy, but surely there's got to be free print-to-PDF solutions out there, and it looks built in to Macs...
Yes, that is the route I am considering. Working with the existing PDF generation code in bitaddress.org to redraw the print outs to be bill sized. This approach would have the added benefit of being able to be pushed upstream back into the bitaddress code base. If anyone has looked at the source and wants to give some tips here on usage, that would be helpful.
|
|
|
|
|
|
|
pointbiz (OP)
Sr. Member
![*](https://bitcointalk.org/Themes/custom1/images/star.gif) ![*](https://bitcointalk.org/Themes/custom1/images/star.gif) ![*](https://bitcointalk.org/Themes/custom1/images/star.gif)
Offline
Activity: 437
Merit: 415
1ninja
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
December 21, 2011, 02:23:29 AM |
|
Working with the existing PDF generation code in bitaddress.org to redraw the print outs to be bill sized. This approach would have the added benefit of being able to be pushed upstream back into the bitaddress code base. If anyone has looked at the source and wants to give some tips here on usage, that would be helpful.
First tip there is no existing PDF generation code at bitaddress.org ![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif) I'm having a hard time determining if your proposal is about: 1) Paper wallet that fits in your physical wallet 2) Paper wallet that looks like a negotiable instrument (check, note, currency, etc) that fits in your physical wallet 3) An invoice or paper point-of-sale system 4) Generating PDF wallets I'm not sure why PDF is involved unless there is some printing advantage over HTML... Thanks for your input and ideas, you have sparked my interest in JavaScript-to-PDF
|
|
|
|
BkkCoins
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
December 21, 2011, 02:47:30 AM |
|
PDF generally allows more accurate control and layout of printed material than html.
Note, there are already "label making" programs around that can take a list of data values and merge to produce PDF output bulk coupons. A tool like that may satisfy some users already with no programming needed.
Usually you can create a fancy layout and then pump it with data to generate bulk output. I did this for a batch of ISBN barcodes once. (I used glabels, in linux, which supports various barcodes and can produce any sized repetitive printed blocks. It uses libzint so can insert QR codes from given data.)
|
|
|
|
osmosis
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
December 21, 2011, 09:07:14 PM |
|
pointbiz - replying to you on the other thread.
|
|
|
|
|
pointbiz (OP)
Sr. Member
![*](https://bitcointalk.org/Themes/custom1/images/star.gif) ![*](https://bitcointalk.org/Themes/custom1/images/star.gif) ![*](https://bitcointalk.org/Themes/custom1/images/star.gif)
Offline
Activity: 437
Merit: 415
1ninja
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
January 10, 2012, 03:22:01 AM |
|
https://www.bitaddress.org/bitaddress.org-v1.4-SHA1-5c120c0860032e88a8fd81b802d6f53a5fc082bf.htmlv1.4 - Wallet Details Tab: Allow for a deterministic wallet to be created by entering a passphrase on the wallet details tab. If you input text that is not a valid private key you will be prompted and asked if you want to use the entered text as a passphrase to create a private key. If you select OK then it will perform a SHA256 of the passphrase to generate your private key. - Wallet Details Tab: Added QRCodes. Added Public Key. - Bulk Wallet Tab: added FAQs. - Version number now shown in footer.
|
|
|
|
BkkCoins
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
January 15, 2012, 08:28:47 AM |
|
openssl dgst -sha1 bitaddress.org-v1.4-SHA1-5c120c0860032e88a8fd81b802d6f53a5fc082bf.html SHA1(bitaddress.org-v1.4-SHA1-5c120c0860032e88a8fd81b802d6f53a5fc082bf.html)= e7c3f3f47c6bbe4a130412b45e974fc8e83510dc
I must be doing it wrong?
|
|
|
|
pointbiz (OP)
Sr. Member
![*](https://bitcointalk.org/Themes/custom1/images/star.gif) ![*](https://bitcointalk.org/Themes/custom1/images/star.gif) ![*](https://bitcointalk.org/Themes/custom1/images/star.gif)
Offline
Activity: 437
Merit: 415
1ninja
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
January 15, 2012, 08:08:55 PM |
|
openssl dgst -sha1 bitaddress.org-v1.4-SHA1-5c120c0860032e88a8fd81b802d6f53a5fc082bf.html SHA1(bitaddress.org-v1.4-SHA1-5c120c0860032e88a8fd81b802d6f53a5fc082bf.html)= e7c3f3f47c6bbe4a130412b45e974fc8e83510dc
I must be doing it wrong?
I did some investigating. If you download the file in the zip from github you should get the correct SHA1 hash of 5c120c0860032e88a8fd81b802d6f53a5fc082bf When I downloaded the file through bitaddress.org with IE9 or Chrome those browsers saved an altered copy of the HTML. When I downloaded the file with Firefox it was saved unaltered and the SHA1 hash matched.
|
|
|
|
BkkCoins
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
January 15, 2012, 09:37:28 PM |
|
openssl dgst -sha1 bitaddress.org-v1.4-SHA1-5c120c0860032e88a8fd81b802d6f53a5fc082bf.html SHA1(bitaddress.org-v1.4-SHA1-5c120c0860032e88a8fd81b802d6f53a5fc082bf.html)= e7c3f3f47c6bbe4a130412b45e974fc8e83510dc
I must be doing it wrong?
I did some investigating. If you download the file in the zip from github you should get the correct SHA1 hash of 5c120c0860032e88a8fd81b802d6f53a5fc082bf When I downloaded the file through bitaddress.org with IE9 or Chrome those browsers saved an altered copy of the HTML. When I downloaded the file with Firefox it was saved unaltered and the SHA1 hash matched. That's odd as I'm using Firefox 9.0.1 on Ubuntu. I just saved the page and then tried this. But wait - I just tried this again. This time I noticed that Firefox has an option at the bottom for how to save. When you select "Web Page Complete" it is altered. When you choose "HTML Only" it doesn't alter and the digest is correct. The "Complete" method was default and it saved as 165745 bytes whereas the "HTML only" version is 170094 bytes. Anyway, now I see that it works. Just have to remember to be careful about that in future. openssl dgst -sha1 bitaddress.org-v1.4-SHA1-5c120c0860032e88a8fd81b802d6f53a5fc082bf.only.html SHA1(bitaddress.org-v1.4-SHA1-5c120c0860032e88a8fd81b802d6f53a5fc082bf.only.html)= 5c120c0860032e88a8fd81b802d6f53a5fc082bf Note also that if you "view source" and then save the raw text to file it also does work correctly. Thx!
|
|
|
|
pointbiz (OP)
Sr. Member
![*](https://bitcointalk.org/Themes/custom1/images/star.gif) ![*](https://bitcointalk.org/Themes/custom1/images/star.gif) ![*](https://bitcointalk.org/Themes/custom1/images/star.gif)
Offline
Activity: 437
Merit: 415
1ninja
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
January 15, 2012, 10:12:49 PM |
|
But wait - I just tried this again. This time I noticed that Firefox has an option at the bottom for how to save. When you select "Web Page Complete" it is altered. When you choose "HTML Only" it doesn't alter and the digest is correct. The "Complete" method was default and it saved as 165745 bytes whereas the "HTML only" version is 170094 bytes.
Confirmed. This same behavior (Complete vs HTML Only) occurs in Chrome and IE9. So it's best people save the "HTML Only" to disk locally so it's unmodified.
|
|
|
|
phathash
Member
![*](https://bitcointalk.org/Themes/custom1/images/star.gif)
Offline
Activity: 75
Merit: 10
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
January 28, 2012, 12:18:38 PM |
|
Could any of this js code be used to spend a coin? Or must I use pywallet or third-party site?
A tx in js would would be nifty. Exporting a tx (via QR code) which I could then move to an insecure PC (for relay) would be neat.
|
|
|
|
dooglus
Legendary
Offline
Activity: 2940
Merit: 1333
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
February 15, 2012, 09:10:30 PM |
|
I have a feature request:
I like the idea of using a paper wallet, but I don't like that to keep funds safe I have to keep the paper somewhere inaccessible, like a bank vault. That's inconvenient when I need access to the funds.
I'd like to be able to provide a passphrase to BitAddress, and have a sheet of paper wallets generated which have the private key encrypted using that passphrase.
Then I can keep a copy of the paper wallets in my house and not worry about having the funds stolen in the event of a burglary, since the passphrase (which is only in my head) would be needed to get at the real private key.
The 'Wallet Details' tab could then recognise when I typed in an encrypted private key and prompt for the passphrase before decrypting it and showing the same details that it currently shows.
What do you think?
|
Just-Dice | ██ ██████████ ██████████████████ ██████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████ ██████████████ ██████ | Play or Invest | ██ ██████████ ██████████████████ ██████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████████████ ██████████████████████ ██████████████ ██████ | 1% House Edge |
|
|
|
Stephen Gornick
Legendary
Offline
Activity: 2506
Merit: 1010
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
February 15, 2012, 09:36:58 PM |
|
What do you think? Encryption-protected paper wallets, excellent!
|
|
|
|
Red Emerald
|
![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
February 15, 2012, 09:43:46 PM |
|
What do you think? Encryption-protected paper wallets, excellent! +1
|
|
|
|
|