<p>There is no single price for a Bitcoin.  There are prices at various exchange markets at any point in time.</p>

<p>Since some exchanges have no requirement that every account has identity verified then there is no way for the exchange to know an account is controlled by another party.</p>

<p>Today's exchanges have no mechnism to prevent what you describe.</p>

CC BY-SA 3.0
2013-03-11T13:32:57.877Z
thanks for bringing up the differences in exchanges. MtGox required me to send an ID to verify my identity, still there was no requirement I think for me to just have 1 account
CQM
CC BY-SA 3.0
2013-04-13T16:30:57.087Z
so yeah, this happened :)
CQM
CC BY-SA 3.0
2013-03-11T10:00:07.420Z
2013-03-11T10:00:07.420Z
Stephen Gornick
<p>Is there anything within the structure of bitcoin exchanges to prevent bitcoin price distortion with multiple accounts controlled by one person?</p>

<p>I have seen stocks with similar levels of liquidity be manipulated in price with about five accounts. Each buying and selling to and from each other, to get the price to the most favorable place so that one account with much more capital can take advantage of the price distortion, and buy or sell into the new optimism (more volume when price is high because of new market participants). You can read great detail about this in SEC emergency injunction orders, as they go after people that do this (after the fact though). Some stock promoters are the main perpetrators.</p>

<p>The advantage with bitcoins is that it is not regulated by the Securities Act, with the transparency about how to do this detailed by judicial remedies against those that were under the jurisdiction of the Securities Act. </p>

<p>Given that there are so many bitcoin exchanges, would anything such as the technical structure of bitcoin, the exchanges or bitcoin specific market forces prevent someone from doing this with a series of trading accounts, especially across the more illiquid exchanges?</p>

CC BY-SA 3.0
2013-03-11T13:06:55.020Z
I see no point in doing such a thing.
o0'.
CC BY-SA 3.0
2013-03-11T16:36:25.933Z
It doesn't work and if you try it, as many have, you will just lose money. You go to all this effort to push the price up, and everyone else can sell at the higher price just as much as you can. You go to all this effort to push the price down, and everyone else can buy at the lower price just as much as you can. You do all the work and you get just a sliver of the benefit.
David Schwartz
CC BY-SA 3.0
2013-03-12T00:07:27.397Z
@DavidSchwartz general such actions would be accompanied with some sort of promotion across various forms of media to influence people's decision, whether optimism or pessimism. This rewards the original agent with increased liquidity to sell into, liquidating their holdings before the other participants know that the promotion has ended
CQM
CC BY-SA 3.0
2013-03-12T00:42:57.710Z
@CQM: Whatever promotion you do, everyone else will see it too. If you push the price up, they can sell too. If you push it down, they can buy too. You gain no special advantage for your effort.
David Schwartz
CC BY-SA 3.0
2013-03-12T01:22:32.140Z
@DavidSchwartz a market with the liquidity and market cap of bitcoin is not nearly as efficient as give it credit for
CQM
CC BY-SA 3.0
2013-03-13T07:46:41.640Z
@CQM: It doesn't really have to be efficient. It just has to have a short-term "natural price" and it has to be harder to push the price away from the natural price than towards it. (The more the market has these characteristics, the harder it is to manipulate it.)
David Schwartz
<exchanges><trading><exchange-rate>
How can we prevent distortion of the bitcoin exchange rate?
CQM
# How can we prevent distortion of the bitcoin exchange rate?

(Asked by: username_0 on 2013-03-11)

Is there anything within the structure of bitcoin exchanges to prevent bitcoin price distortion with multiple accounts controlled by one person?

I have seen stocks with similar levels of liquidity be manipulated in price with about five accounts. Each buying and selling to and from each other, to get the price to the most favorable place so that one account with much more capital can take advantage of the price distortion, and buy or sell into the new optimism (more volume when price is high because of new market participants). You can read great detail about this in SEC emergency injunction orders, as they go after people that do this (after the fact though). Some stock promoters are the main perpetrators.

The advantage with bitcoins is that it is not regulated by the Securities Act, with the transparency about how to do this detailed by judicial remedies against those that were under the jurisdiction of the Securities Act.

Given that there are so many bitcoin exchanges, would anything such as the technical structure of bitcoin, the exchanges or bitcoin specific market forces prevent someone from doing this with a series of trading accounts, especially across the more illiquid exchanges?

**Tags:** exchanges, trading, exchange-rate

> **Comments:**
> **username_1**: I see no point in doing such a thing.  
> **username_2**: It doesn't work and if you try it, as many have, you will just lose money. You go to all this effort to push the price up, and everyone else can sell at the higher price just as much as you can. You go to all this effort to push the price down, and everyone else can buy at the lower price just as much as you can. You do all the work and you get just a sliver of the benefit.  
> **username_0**: @username_2 general such actions would be accompanied with some sort of promotion across various forms of media to influence people's decision, whether optimism or pessimism. This rewards the original agent with increased liquidity to sell into, liquidating their holdings before the other participants know that the promotion has ended  
> **username_2**: @username_0: Whatever promotion you do, everyone else will see it too. If you push the price up, they can sell too. If you push it down, they can buy too. You gain no special advantage for your effort.  
> **username_0**: @username_2 a market with the liquidity and market cap of bitcoin is not nearly as efficient as give it credit for  
> **username_2**: @username_0: It doesn't really have to be efficient. It just has to have a short-term "natural price" and it has to be harder to push the price away from the natural price than towards it. (The more the market has these characteristics, the harder it is to manipulate it.)  

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## 1 answers

### Answer by username_3 on 2013-03-11. Score: 3 | Accepted answer

There is no single price for a Bitcoin. There are prices at various exchange markets at any point in time.

Since some exchanges have no requirement that every account has identity verified then there is no way for the exchange to know an account is controlled by another party.

Today's exchanges have no mechnism to prevent what you describe.

> **Comments:**
> **username_0**: thanks for bringing up the differences in exchanges. MtGox required me to send an ID to verify my identity, still there was no requirement I think for me to just have 1 account  
> **username_0**: so yeah, this happened :)  

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