Topic: How would you like to design a bitcoin banknote? - page 6. (Read 94806 times)

Thanks!


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. 


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.

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.

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

bitcoin does not need a printed banknote !

e-currency need only electric power

 


btw:
nice drawings!

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

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. This is one case where I'd definitely keep a copy of the private key at home.



Edit: I just noticed, you edited the slightly more saturated ones, I was hoping to use the more subdued colors, see example below:





Any chance you could add the gold B to the more subdued ones please? thanks

...and they're up:

https://www.dropbox.com/sh/ubt85fo4qx57s0h/m4f9Yapgt3/btcnotes

SVG, EPS, and PNG (rendered at 600 dpi) are available.

Like this?:

That should be doable...just need to see what color was left alone in the existing grayscale note and change the others accordingly.  I'll post again when I have them ready.

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).

If someone wants to run coins and would like to discuss what a new 2013 coin should look like, perhaps we can split the cost of the dies and get better pricing on a combined order.  You would need about a $2000-$2500 minimum budget just for coin blanks.

This is a personal request for Mr. Salfter if I may, and assuming it's not too much trouble:

Could we have a bitcoin bill background image with the golden bitcoin circle on light blue, light green and light purple backgrounds? I think it would look realy cool.

So, the gold "B" circle from the grey one:



added to these ones:







I would like to use the png with Michael S's modified bitaddress utility.

Many thanks in advance! If not possible, no worries

If the initial investment for making physical coins is as low as you indicate, then coining might well be the best option for distributed issuing. I was just  thinking of a natural progression from the notes of this thread. If coins are easier to make resistant to counterfeiting, then that´s a good argument to  choose coins to circulate bitcoins. Yours are really cool, btw!

Then I will also brave the danger of scorn from those abhorrent of centralizing to make another suggestion: If coins are to be used for distributed issuing then a uniform design of the front side (opposed to the hologram) sounds like a practical idea? Any "empty" coin redeemed could then be re-coined easily by another distributed issuer. Bitcoin foundation, anyone?

All of these solutions sound so difficult.

One could also do a coin.  A coin is so freaking easy.  You put a sticker on it very carefully.  Voila!  It lasts much longer than any piece of paper.

Anyone who wants to put $5000 into their own coins and holograms can start making coins just like I do.  I see little reason why someone should want to create a hardened bill meant for circulation but then design it so it scratches off like a lottery ticket and therefore doesn't last.  Casascius Coins will survive a trip through the wash.  If the sticker were lacquered over with something that hardened well, the coins would be almost as resilient as any other coin.

I have thought of lottery tickets, but would think of them mostly as a way to mass-produce disposable wallets.  If I can get BIP 38 to get a little bit more widespread adoption, then having scratchoff disposable paper wallets made by a lottery ticket company would actually be very realistic.  Independent party A could pre-generate intermediate codes for random passphrases and put them in a file.  Independent party B could create the actual product through a company that prints lottery tickets, using those intermediate codes.  Party A takes the final product and somehow overprints the per-ticket passphrase on the outside.  Nobody in the supply chain ever gets access to the real private keys, since redeeming any piece requires both the passphrase and the junk under the scratchoff.

Michael_S has presented a practical solution for making single use notes safely on a PC, with QR codes and all. This thread, and other threads around here,  abounds with beautiful artwork for notes. The two steps away from this to distributed (as in anyone owning a PC and some bit coins) issuing of bills for circulation are: 1. tamper proofing of what´s hiding the private key, and 2. measures to prevent counterfeiting of the visible parts of the note.

1. A solution already exists in that of scratch card lottery tickets, and I can´t imagine applying a rubber coating on plastic will require a lot of investment in equipment.

2. This is likely to be the most tricky part for an economical distributed solution, so I will assume a partial centralization is required. Like that of small banks getting their token credit cards from a central manufacturer, for then stamping the cards themselves with an account number and so on ( I assume this is the way it is done. This central producer of blank bitcoin notes will be able to counterfeit, but this event will not effect the holders of genuine bills (as they can be redeemed to online BTC)

And maybe there is a point 3. Preparing for lawsuits after the government gets wind of it...  

I think Richy is talking about trying to make bills that stay in circulation.  Single-use notes work great.

And I'm on the opposite end of the spectrum.  Single-use paper Bitcoins are even better than paper currency.   The QR code is scanned and and the document discarded.   Either there were funds from it or there weren't.   For the change I get my local currency and coin, just as if I had paid cash.   Or I can show the public ("load & verify") QR code for my the next one and get a receipt from the merchant showing the address and the transaction id.

Bear in mind that it's a gift card. If you wanted to try and complete a transaction with it, you'd run into similar trust issues. Gift card fraud is rife and you'd be foolish to trust it on its own merits.

Since I'm posting anyway, I'll just add that I think the whole bitcoin-note thing is a bit ill advised. It's trying to be something that it isn't and can't be. Even Casascius' coins (which are cool) are somewhat marginal really. Though with that said, I don't want to rain on anyone's parade so I'll be pleasantly surprised if this works out well.

Well, looks like bitcoin is no longer the only pioneer here.

"You can send a Square gift card to anyone with an email address. No smartphone? They can print out a QR code."

That's Square's Jack Dorsey:
 - https://twitter.com/jack/status/277824833130209280

I haven't seen a printout from Square with one of these gift cards, I'ld be curious to see one though.  (e.g., what size is the QR code).

But this paper QR code as a bearer instrument works because it is familiar -- it works kind of like cash [Edit: as long as the underlying electronic transaction can occur.]

You kind of can't, but fortunately it is so expensive to get your own hologram that few are going to do it frivolously and without putting their name on them. Anonymous holograms are cheap there is no point in making a custom no name design.

If not from a centralized trustworthy manufacturer, how can you be certain that the private key is vaild?

How can you know that there is actually a private key under the hologram if everybody can issue out bitnotes?

There are holograms numbered, putting one of them over the private key and print the same number on the bill reduce a lot the risk of counterfeit. But still to accept a self printed bill you've to trust the emitter and the person who gives it to you. I think that the bills are nice idea as introduction to bitcoins, or to store some bitcoins but a wide use of them is not simple, unless you use a central emitter of bitbils (but this is in contrast with the idea of bitcoin).