To my knowledge, bitcoin is not traded on any stock markets. It is traded directly on exchanges specialized in cryptocurrencies. These exchanges don't necessarily close, and therefore trades are always occurring.
Your wallet is reading the price feed from one of these exchanges (you can probably configure which one if you look at the settings), and is ...
Well, everyone can manipulate the exchange value of a currency by trading large volumes.
Having 51% in particular does not really change that.
Besides, for lowering the price, he will have to sell a lot, probably losing his 51% position.
So basically, you can't manipulate the price just by having > 51% of the bitcoins, but by trading very large volumes. ...
There is this classic bootstrapping problem. To make a successful cryptocurrency it needs:
Miners (so that it's secure)
Users (to attract miners, users also want it to be secure)
Value (to attract users and miners)
So new cryptocurrencies need to find a way to jump-start all those things at the same time, which it turns out- is not easy.
Here's a great ...
The High Price is the lowest sell order that is on the exchange. Conversely, the Low Price is the highest buy order on the exchange.
However, the Last Price is calculated differently. It looks at what the price was the last several times that bitcoins changed hands.
If Last Price is higher than High Price, or lower than Low Price, that is indicative of ...
What you are probably missing is the fact that you can buy partial bitcoins, you don't have to purchase a whole bitcoin at once. You could buy a small bit of bitcoin for $20 if you wanted, it can be an affordable investment for anyone.
who controls the price of BTC?
No single person.
Like any market, the price is determined by the individual buyers and sellers.
Since most buyers and sellers are human, the price they are willing to buy or sell at depends in part on irrational or emotional factors in part driven by news about various aspects of the global economy as well as news about ...
First of all, let a number of bitcoins be bought and (x1) is how much you paid for it.
Now the price of 1 bitcoin changes
Then you use the formula:
x2= (New value of 1 bitcoin)*(Number of bitcoins you have)
Now you just find the difference between x1 and x2. This will give you your profit/loss.
All you have to remember is the initial value. In your case ...
The simplest way to calculate would be:
averagecost = ((BTC[t0] x USD[t0]) + (BTC[t1] x USD[t1]) + (so on))/total_BTC
where t0,t1 and so on are different time when you bought.
The above gives you the average cost for all your BTC
Now to know the profit, use the below formula:
profitloss = (current_BTC_price - averagecost) x total_BTC
If profitloss is ...
The prices of basically all altcoins follows that of Bitcoin's. So generally when Bitcoin goes up, so do altcoins', when it drops, so do altcoins'. This is generally because altcoins are primarily used as a way for people to get more Bitcoin.
No, this is not a way that you can accurately calculate this ratio, because trading is often an off-blockchain event. The sequence of events looks something like this:
You send bitcoins to the exchange, using the blockchain. (Or you send fiat money to the exchange.)
You make any number of trades internally to the site. The blockchain is not involved, only ...
Bitcoin follows very closely to USD and RMB, because US and China are the biggest players in the bitcoin market now. You can see the trade charts here: http://bitcoincharts.com/charts/volumepie/
Hence US and China exchange rates will affect the worth of Bitcoin.
In regards to travelling, the merchant accepting Bitcoin will list prices in their local ...
The "51% attack" that is a known vulnerability impacting proof-of-work digital currencies like Bitcoin has to do with 51% of the mining capacity, not 51% of the currency.
There is a concept referred to as the "economic majority" but that describes how those who hold coins and buy newly mined coins are the parties who essentially have the final say on ...