Topic: [Guide] Saving your wallet.dat to PAPER - page 2. (Read 6552 times)
Nope. And davout only said "theoretically". You could go all the way and look at the source code just to get the keys, but then again you could also just back up the entire wallet.dat of a few 100 KB. That's what I do. (Apart from printing out random Google search pictures)
Awesome find. +1 for the community.
Seriously, can you tell me how to extract the keypair from the wallet?
I printed out the following keypair to paper and deleted my wallet.dat
Now, how do I scan it and get my 10,008.15 BTC back???!?
Now, how do I scan it and get my 10,008.15 BTC back???!?
Theoretically you can do much simpler, just print out the keypair after sending coins to the public key
How? Please explain how that is simple, as I really have no idea how to "print out a keypair".
i'm pro encrypted ass branding
+1 to UV ink tattoo 
+1 foreverD
For ultimate security, you can encrypt your wallet, use paperback, then get a tattoo of the bitmap.
Bad idea. In all likelihood, Paperback will be defunct and forgotten 30-40 years from now. Good luck retrieving the information from the bitmap then!
See:
http://news.bbc.co.uk/2/hi/technology/6265976.stm
To be safe, you would have to tattoo the entire source code (or at least pseudocode) of Paperback in addition to the bitmap.
A much better idea is to convert the wallet keypair to a QR code and tattoo that code in UV ink.
QR codes are ISO-standardized, so even if they become obsolete, you will always be able to find the old technical papers that tell you how to convert them back to the keypair.
For ultimate security, you can encrypt your wallet, use paperback, then get a tattoo of the bitmap.
Don't put it on your back, though, or you'll have to trust someone else take the picture when you want to recover the wallet.
Hmm. I wonder if you could do the Waterworld thing and shave your hair, get the tattoo on your scalp, and then let your hair grow back so that the tattoo is hidden. I guess for full security, however, you'd have to murder the tattoo artist afterward.
Don't put it on your back, though, or you'll have to trust someone else take the picture when you want to recover the wallet.
Hmm. I wonder if you could do the Waterworld thing and shave your hair, get the tattoo on your scalp, and then let your hair grow back so that the tattoo is hidden. I guess for full security, however, you'd have to murder the tattoo artist afterward.
Theoretically you can do much simpler, just print out the keypair after sending coins to the public key
Very cool! I have been meaning to try this program, nice to hear that it actually works. 
Basics
A program called PaperBack(Win32 at this time, Open Source'd) allows a user to encrypt and print a paper copy of a file, to restore the file you scan or provide a image of the printed paper and it dumps out the file
How to use with you wallet.dat
1) Download PaperBack from the location provided before
2) Open PaperBack
3) Open Options and select the options you wish to have (For more info, read the page provided above)
4) Drag and drop the file (wallet.dat) into the window for printing
4.5)File -> Save to bitmap, It will ask you what file to encode, and then where to save the bitmap
Restoring your Wallet.dat
1)Scan or provide the bitmap of the backup
2)Wait for processing
3)Save wallet.dat
Example
(Due to me not having a printer, I had to kinda fake it)
Here is the first Image: http://imgur.com/8b7nz
Its a empty wallet.dat with Encryption on (AES-256), standard options past that
Here is the damaged copy, Opened in GIMP saved as a JPEG at 4% Compression, then converted back into a Bitmap
http://imgur.com/nKKLO
ECC had to correct 56bytes of bad data.. once decoded the md5 hashes where the same!
Here is a screenshot asking for the password (The password is "bitcoin")
http://imgur.com/OEj6G
Extras
Found this while googling around,
http://ronja.twibright.com/optar/ Its GPL'd and seems to be better for data storage and recovery, but I hear its harder to use
A program called PaperBack(Win32 at this time, Open Source'd) allows a user to encrypt and print a paper copy of a file, to restore the file you scan or provide a image of the printed paper and it dumps out the file
How to use with you wallet.dat
1) Download PaperBack from the location provided before
2) Open PaperBack
3) Open Options and select the options you wish to have (For more info, read the page provided above)
4) Drag and drop the file (wallet.dat) into the window for printing
4.5)File -> Save to bitmap, It will ask you what file to encode, and then where to save the bitmap
Restoring your Wallet.dat
1)Scan or provide the bitmap of the backup
2)Wait for processing
3)Save wallet.dat
Example
(Due to me not having a printer, I had to kinda fake it)
Here is the first Image: http://imgur.com/8b7nz
Its a empty wallet.dat with Encryption on (AES-256), standard options past that
Here is the damaged copy, Opened in GIMP saved as a JPEG at 4% Compression, then converted back into a Bitmap
http://imgur.com/nKKLO
ECC had to correct 56bytes of bad data.. once decoded the md5 hashes where the same!
Here is a screenshot asking for the password (The password is "bitcoin")
http://imgur.com/OEj6G
Extras
Found this while googling around,
http://ronja.twibright.com/optar/ Its GPL'd and seems to be better for data storage and recovery, but I hear its harder to use
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