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Question: Which note wins first place?
Blue/grey note with fractals - 49 (33.3%)
Bit-Pay Leonardo note - 18 (12.2%)
Orange B-Cash note - 22 (15%)
Psy Yellow Note - 58 (39.5%)
Total Voters: 146

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Author Topic: How would you like to design a bitcoin banknote?  (Read 72580 times)
pazor
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December 13, 2012, 08:50:03 AM
 #621

bitcoin does not need a printed banknote !

e-currency need only electric power

 Grin


btw:
nice drawings!

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December 13, 2012, 01:52:28 PM
 #622

My note generator for C# does encrypted notes. This would be safer to carry as a 50 BTC note.

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 wallets instead.
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December 13, 2012, 04:20:31 PM
 #623

bitcoin does not need a printed banknote !

e-currency need only electric power

 Grin

I agree but they are very good for the permanent storage so they have a point.

I think phisical bitcoins shouldn't be standardized. There can be many variations, the only important thing is how the private key is handled.

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salfter
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December 13, 2012, 05:55:32 PM
 #624

They're absolutely beautiful, thank you so much! tip sent Smiley

Thanks!

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I'm thinking, besides handing out quarter bitcoin notes to people, I'd like to keep a larger note in my wallet, like say a 50btc. The idea is to hopefully spark the idea in people's minds that bitcoin isn't just "play" money. A 50 btc bill is 500 euros, if people can "get" emotionally that this is as real as it gets, that would be a big step forward. The drawback is I wouldn't normally carry a 500 euro bill in my wallet though, so I'm a little ambivalent about the idea.

Is there such a thing as a €500 note?  The largest denomination produced here is $100 (mirrored in my collection by the BTC10 note), though denominations up to $10k have circulated in the past:

http://en.wikipedia.org/wiki/Large_denominations_of_United_States_currency

None of this is to say we couldn't make large-denomination Bitcoin notes, of course.  Grin

Quote
Edit: I just noticed, you edited the slightly more saturated ones, I was hoping to use the more subdued colors...any chance you could add the gold B to the more subdued ones please? thanks Smiley

I've taken the other colors I've done in the past and given them the same treatment; they're uploaded to Dropbox at the link given earlier.

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December 13, 2012, 06:01:27 PM
 #625

How about some odd values like 3.14159 btc? Or 4.20 for those silk-road purchases Smiley

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December 14, 2012, 02:58:50 AM
 #626

Actually, I deliberately designed my 1 BTC coin to be generic enough that others could use it.  It does not say Casascius on it, even though it could.  The only coins I make where I put Casascius on the metal itself are the silver and gold (Casascius is embedded in the binary on the back of the silver, and on the front of the gold).

I was thinking of having all of the business part of the coin on the hologram side. This would not only make them easy to reuse, but also open some precious space for advertising on the all metal side (A circulating bitcoin-bill would lend itself very well to be financed this way). The future designated ad-space would naturally first be used for artwork on coins intended for gifting.
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December 14, 2012, 03:17:49 AM
 #627

I think phisical bitcoins shouldn't be standardized. There can be many variations, the only important thing is how the private key is handled.

In a situation of hyperinflation of the official currency you will find that goods like cigarettes and brandy naturally are promoted as a replacement. A uniformly designed physical unit, recognized by the public as a container of bitcoin, could easily also be put into circulation in a crisis (and is way superior as a currency)
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December 14, 2012, 02:08:08 PM
 #628

I was wondering something:

Any chance we can use Encrypted QR codes, so that only people who know the passphrase can use the note?

Would it be difficult to implement that into current Bitcoin Smartphone applications? I mean, the scanning and decrypting.

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December 14, 2012, 02:35:33 PM
 #629

I was wondering something:

Any chance we can use Encrypted QR codes, so that only people who know the passphrase can use the note?

Would it be difficult to implement that into current Bitcoin Smartphone applications? I mean, the scanning and decrypting.

I of course would second this: the relevant technical information is at https://en.bitcoin.it/wiki/BIP_0038

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 wallets instead.
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December 14, 2012, 05:01:56 PM
 #630

My note generator for C# does encrypted notes. This would be safer to carry as a 50 BTC note.
this would be an awesome option but I guess the encrypted ones are much more difficult to redeem?

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December 14, 2012, 05:09:12 PM
 #631

My note generator for C# does encrypted notes. This would be safer to carry as a 50 BTC note.
this would be an awesome option but I guess the encrypted ones are much more difficult to redeem?

Until more people implement BIP 38, the only way to redeem my notes is to use my generator app to decrypt it into an unencrypted private key.  Other than that limitation, and assuming you're able to run my app, it's not all that difficult.  I have recently added a "decrypt key" screen on the tools menu so it's easier to figure out what to do.

I have faith though... when I started making physical bitcoins, I was speaking along the same lines... telling people they had to use a patched copy of bitcoind in order to redeem private keys of any kind, encrypted or not.  Nowadays, there's at least half a dozen good places you can redeem them.  My canvassing works... eventually.

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 wallets instead.
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December 14, 2012, 07:24:36 PM
 #632

My note generator for C# does encrypted notes. This would be safer to carry as a 50 BTC note.
this would be an awesome option but I guess the encrypted ones are much more difficult to redeem?

Until more people implement BIP 38, the only way to redeem my notes is to use my generator app to decrypt it into an unencrypted private key.
You should implement a C library for BIP 38 since such a library can be used in any language. therefore it would be much easier to implement and would therefore push products/development.

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December 14, 2012, 07:36:19 PM
 #633

You should implement a C library for BIP 38 since such a library can be used in any language. therefore it would be much easier to implement and would therefore push products/development.

The friction isn't so much in the difference between C and C#, but rather, in getting equivalent crypto functionality in the other languages.  If the core of BIP 38 is scrypt, one would be better off using a native implementation of scrypt in the target language, rather than making any attempt to port the one in mine.  The  reference implementation of scrypt itself, as I understand it, is already C, but the implementation that might have the most practical value (besides C) would be one written in javascript.

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 wallets instead.
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December 14, 2012, 11:21:40 PM
 #634

This is why I would love to see BIP 0038 implemented.

PROOF OF CONCEPT: Ignore shitty perspective and other details



In a real case I would probably place the Spend code, together with the written encrypted key on the back. But it's only to show that Paper wallets can also be Plastic Wallets!

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December 14, 2012, 11:28:00 PM
 #635

This is why I would love to see BIP 0038 implemented.

PROOF OF CONCEPT: Ignore shitty perspective and other details



In a real case I would probably place the Spend code, together with the written encrypted key on the back. But it's only to show that Paper wallets can also be Plastic Wallets!
2. Wrong! Use a chip who signs the transaction internal.

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December 14, 2012, 11:35:50 PM
 #636

This is why I would love to see BIP 0038 implemented.

PROOF OF CONCEPT: Ignore shitty perspective and other details



In a real case I would probably place the Spend code, together with the written encrypted key on the back. But it's only to show that Paper wallets can also be Plastic Wallets!
2. Wrong! Use a chip who signs the transaction internal.

It's just a cheap way for a discardable plastic / cardboard /paper card. Just print your card on a piece of paper or plastic and keep switching cards or keys as much as you want.

It is supposed to be an in-between a real debit card and a paper note, for those of us who can't manufacture or buy or own chipped cards. Something more tangible and durable than paper, easy to store in a real wallet.

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December 16, 2012, 02:58:57 AM
 #637

This is why I would love to see BIP 0038 implemented.

PROOF OF CONCEPT: Ignore shitty perspective and other details



In a real case I would probably place the Spend code, together with the written encrypted key on the back. But it's only to show that Paper wallets can also be Plastic Wallets!
2. Wrong! Use a chip who signs the transaction internal.

Cards with chips will cost more, and requires expensive readers to works while qrcode can be decoded by a smartphone or a barcode reader.

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December 16, 2012, 06:39:05 AM
 #638

I'm interested in business card sized designs.  Then we can print more per page.  It's also easy to buy paper that is already perforated for business cards.


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December 16, 2012, 07:03:29 AM
 #639

Here is something similar to the card/business card form factor idea: http://www.paymyaddress.com/

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December 16, 2012, 09:16:08 AM
 #640


What do you mean "Printer manufacturers are controlled by reptilians"? Is it actually insecure to print something sensitive, then connect the printer to an internet-connected machine? Even when power cycling it?

Joke, I myself believe that method to be safe. But some people are always commenting about the issues with printers (closed source etc).

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