That actually is the sign language sign for money. But I saw that in the US it's different. Sign language has different dialects depending on the geographic location. But I think the sign you are referring to (and the one from video 2) is recognized around the world.


That would actually be great, also because that would probably mean that bitcoin adoption has become widespread (until then those kind of specific utilities will not become available/profitable).

Yesterday my girlfriend was practicing here sign language. She asked me if there was a sign for Bitcoin. As far as I can tell, there is no sign yet. As part of worlwide adoption of Bictoin, let's decide on a sign for Bitcoin in sign language!

We have two candidates:

The first starts with the sign for the letter 'B', then two vertical bars are drawn. These two signs together resemble the Bitcoin logo.
Video 1

The second sign also starts with the letter 'B', then the sign for money is made.
Video 2

What do you think should become the universal sign for Bitcoin?

I made a quick start:



The label generation works, but the labels are still empty. I will look into adding the private key's during the weekend.

Let me know if this is in the right direction.

My 2nd entry:

Bitcoin is a currency which can be send anywhere in the world from anywhere in the world. You can send very small amounts as easily, fast and reliable as very large amounts. You don't have to pay high fees. And you can do all this from any computer or your phone.

I would like to give this a serious try. I believe I have the needed experience in html/js/css programming.

Is it possible to reserve the bounty for a few days, so I can put some serious time in it without the risk of being outperformed by an anonymous lurker?

If not I might try it anyway during the weekend (if by then nobody has made a serious attempt).

May I ask why you want to fork BitAddress.org instead of using your own wallet generator software?

The wallet generator software is pretty flexible as well and could be altered to do this job.

You did ask me/someone to do this in your opening post. But I don't want any compensation.

I just wanted to use my skillset to earn some bitcoin. It has been a valuable lesson in doing business with complete strangers .

When I have some spare time I will try to add my changes of the code as a pull request to the original github page. Maybe someone else has a use for it.

Yup it's working now


What is the idea behind this page? How would people use it?

An approach is to export the private key from your wallet with the stuck transaction. Then import the private key into another (new) bitcoin client. If you create the same transaction from the new client with a fee attached this time, the other transaction will be seen as a double spend, after which it will be ignored by the network.

Edit: removed an incorrect solution as DannyHamilton points out below.

Great idea to use Bitcoin as a conversation topic in you classes! You probably already know this video (What is Bitcoin? by weusecoins), but if not, it makes for a great (and short) introduction to Bitcoin.

I haven't seen either of the videos you mentioned. I'll save them for later viewing

This thead/post might also be worth checking out: https://bitcointalk.org/index.php?topic=203366.0. The poster claims 800 mhash (he has his card OC'ed, so without OC it will be lower).

Most important: your feathercoins are safe (as long as you don't delete your wallet.dat!), they are safely stored in the blockchain / network.

I'm guessing you don't have very indepth knowledge of the workings of the Feathercoin client, so here is a step by step guide to deleting the corrupted blockchain on your computer which is preventing the feathercoin client from synchronising with the network.

Do the following

• Close the Feathercoin client
• Press 'Windows key + R'
• Paste in '%APPDATA%\Feathercoin' in the run dialog that opened
• Press Enter, windows explorer will open the pasted location
• Make a copy of all files and folder located here to some other folder (just to be sure)
• Delete all files that start with 'blk' located here
• Delete the 'database' folder located here
• Open the feathercoin client
• Your client should redownload the blockchain, and sync including your transaction

Let us know how it works out.

Bounty received. Thanks!

I numbered your questions so I can refer to them more easily:

1. A complete list of all exchanges alongside their daily volume and total percentage share of currency exchange's market volume
2. A list of all exchanges that have shutdown and reasons why
3. A list of all local trading hubs such as localbitcoins and their daily volume
4. Historical data on price (if it exists) on the exchanges
5. A list of all websites and projects that are aggregating something similar to this list
6. API documentation for the exchanges
7. If a commercial entity is involved in this space, then a reference to them

I think there might be some problems with your questions:

• 1. This is a very very large list, depending on which fiat currencies you include. This results in a lot of work (read hours and hours) when answering questions 4 en 6. Do you want data for all existing exchanges, or might it be an idea to narrow it down to the big 5?
  
• 3. The trading volume for local trading is hard to find, because a lot of the transactions originating from those sites will be set up through private messaging or in real life.
• 5. Would these sites not defeat the purpose of this list (or at least questions 1 and 4)?

---

That said, here are the answers (as far as possible) for the top 5 USD exchanges (based on trading volume as reported on http://bitcoincharts.com/markets/). This is not a complete list, but it will give a good picture/overview of the exchange market. I hope this is what you are looking for.

1. A list of the big 5 exchanges (data from bitcoincharts.com):

Exchange (USD)	Volume (BTC)	Trading volume %
Mt. Gox	95,419	82.65
BitStamp	12,990	11.25
BTC-E	6,162	5.34
Camp BX	801	0.69
Vircurex	39	0.03

As you can see, these 5 exchanges make up roughly 99.96% of the total trading volume (at least the volume listed on bitcoincharts).

2. A few (big) exchanges that have shutdown:

• Bitcoin-24 - Closed because german and polish autoristies seized the bank accounts. At the same time a bug in the trading engine awarded incorrect amounts of bitcoin to traders. See their homepage (https://bitcoin-24.com/) for details and current status.
• Bitfloor - Was hacked, later closed because bank account got closed. More information is available on their homepage: https://bitfloor.com/.
• Global Bitcoin Stock Exchange - Legal trouble (ALM, tax and regulations) (see this blogpost for more details: http://bitcoinmagazine.com/global-bitcoin-stock-exchange-shuts-down-for-good/).

3. Local trading hubs (no mention of daily volume):

• https://en.bitcoin.it/wiki/In_Person_Traders - A map with local buyers and sellers
• http://tradebitcoin.com/ - A map with local buyers and sellers
• http://btcnearme.com/ - Hooks up buyers and sellers via e-mail
• https://localbitcoins.com/ - Searchable directory of local buyers and sellers
• http://btcspot.com/ - Searchable directory of local buyers and sellers
• http://bcchanger.com/ - Connects persons selling and buying bitcoins online

4. The history of price for the exchanges can be found on several sites:

• http://bitcoincharts.com/markets/currency/USD.html
• http://bitcoinity.org/markets
• http://bitcoin.clarkmoody.com

5. A list of all websites and projects that are aggregating something similar to this list:

• http://bitcoincharts.com/
• http://bitcoinwatch.com/
• http://bitcoincharts.com/markets/currency/USD.html

6. API documentation:

• Mt. Gox - https://classic.mtgox.com/support/tradeAPI
• BitStamp - https://www.bitstamp.net/api/
• BTC-E - https://btc-e.com/api/documentation
• Camp BX - https://campbx.com/api.php
• Vircurex - https://vircurex.com/welcome/api

7. If a commercial entity is involved in this space, then a reference to them
As far as I know there is no commercial entity doing this kind of aggregation.

Payment received. Nice doing business with you

Bitcoin is a currency without banks to control, influence or decrease the value of the currency. Instead verifiable mathematical calculations are used to secure the transactions and storage of the currency.

Ok, you're really looking to get your bitcoin's worth I see

Here's my final attempt (and my best animated gif I have ever created (I made two so far and am already considering switching careers)): https://www.dropbox.com/s/jfcycth6wdooi62/avatar_glow.gif.

I hope this is what you have in mind, so you can be the first person ever to do a person to person bitcoin transaction with me (see my sig for the address).

I'm replying here to warn other people interested in doing this project. There might be a good explanation for this, but I fear that is not the case.

I have provided bittick with half of the solution (you can print LTC, NMC and BTC wallets). In addition he requested a template to print credit card sized wallets which is also made possible. The other (not implemented) half would be the ability to adjust the placement of the QR codes and text on the printout.

He is active on the forum every day, but he chooses to ignore my messages since I sent him the preview of the work done so far.

Well, I don't know if it works either.

But here's my try at it: https://www.dropbox.com/s/vx0454kmd58hil7/avatar_104095_1.gif (The image does not seem to be animated on the dropbox page. If you download it and view it in your browser, it is animated. Must dropbox not previewing the file right.)

If this does not work, here are the two separate images:

https://www.dropbox.com/s/z2ca6z7q91t5lii/avatar_104095_1_1.gif
https://www.dropbox.com/s/6hjlf94cqgaujwx/avatar_104095_1_2.gif

Animated gifs brings back some 'way back in the days' feelings

I have added the 'Other real world shop maps' to the wiki article. The new section lists websites that display real world shops on a map. So when people don't see the map because the browser blocks it, at least they have a few good alternatives.