Questions tagged [exchange-rate]

refers to the rate at which two currencies are exchanged one-for-another.

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18answers
10k views

I paid in bitcoin, now I'm owed a refund. Can I demand it in bitcoin too?

This is, I suppose, a legal question so I should point out that I'm most interested in US and European law. I made a payment to a company for a product more than a year ago in bitcoin. The amount ...
33
votes
7answers
58k views

Why do the price of bitcoins vary wildly between exchanges?

▼ mtgoxUSD 95.0000 108.452 -12.404% 2428892 ▼ btc24EUR 67.5047 89.036 -24.183% 348160 ▼ btceUSD 82.9900 106.794 -22.289% 277286 ▼ bitstampUSD 75.9900 109.320 ...
24
votes
10answers
23k views

Where can I get historic data series of Bitcoin prices?

Where can I get a time series of (date, bitcoin price in USD)? BitcoinCharts no longer provide historic data, only the last 20,000 samples.
18
votes
6answers
13k views

How is the exchange rate for Bitcoin established?

I noticed that there are exchange rates for Bitcoin to other given currencies. How are these rates established?
17
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5answers
18k views

Where can I get all historical trades BTC price data?

Where can I get all historical trades BTC price data? (There are some similar questions, but I am looking for high-resolution data, while the previous questions asked for lower resolution data, such ...
16
votes
5answers
2k views

Why have prices fallen so drastically around October 2011?

Any idea why bitcoin prices have fallen so in September and October of 2011? It seems like back in August, one bitcoin cost about US$17, whereas in late October, it's just somewhat over US$2.
16
votes
4answers
36k views

Anyone know of an API I can get historical price time series for multiple coins

I'd like to build some historical price charts, to use in my cryptocoin portfolio tracking app, using time series data (with HighCharts js). Anyone know of an API that provides this price data, ...
14
votes
4answers
4k views

Is there empirical data about a relationship between bitcoin price and difficulty?

There have been claims that Bitcoin price and difficulty correspond. Is there empirical data to support or refute this?
12
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4answers
8k views

Need authoritative source for historic Bitcoin conversion prices from all exchanges

What are the authoritative sources for historic Bitcoin prices? Ideally this will be an API for all major exchanges.
12
votes
1answer
3k views

Why do namecoins have any value?

Many Bitcoin mining pools offer merged mining with Namecoin, and there are places where one can buy and sell BTC for NMC and the other way around. But, why would anyone want to own NMC? As far as I ...
11
votes
3answers
1k views

What is the easiest way to programmatically obtain the current USD-BTC spot price?

E.g., if I wanted to create a cron script that would grab the latest spot price every hour and store it in a local file or database, what would be the place to "scrape" that information from? (...
10
votes
2answers
2k views

Digital currencies pegged to dollar value

Some digital currencies, like NuBits, declare that they peg their value to dollar or other fiat currency. How does this work? Under what conditions this can work? Can this be distributed, or does ...
10
votes
1answer
439 views

Why does blockchain.info say BTC was traded for $35?

According to blockchain.info, BTC reached a peak rate of $35 in June 2011. According to the data available from bitcoincharts.com, the highest price BTC was traded in Mtgox that month (and until ...
9
votes
3answers
2k views

How does bitcoin's price volatility compare to commodities/stocks with comparable market capitalizations?

Bitcoin's long term (after 21 million units have been created) market cap is about $102 million. Price volatility of individual commodities/stocks is inversely correlated with their market cap, so ...
9
votes
1answer
6k views

Why is MTGOX's Price/Bitcoin higher than most other exchanges?

I've been watching BitCoins for the last few months, and noticed that MTGOX's price per bitcoin is always higher than the price per bitcoin of similar exchanges, (eg cavirtex.com, and bitstamp.com). ...
9
votes
5answers
8k views

Is anyone taking advantage of different prices across exchanges?

Say I have funds on two exchanges. Whenever the price of bitcoin is higher on the first one, I sell on that one and buy on the other one. Is anyone doing this or has a program that does this? Is it ...
9
votes
2answers
6k views

Is there a website that shows historic price data?

I need to find what the Bitcoin-Mt. Gox USD price was at certain historic dates and times (exact timestamp). Is there a website where I can input a specific historic date+time, and get the rate for ...
8
votes
3answers
1k views

How much should I charge a client if they pay me in bitcoins?

The price of bitcoins fluctuates rapidly against other currencies. If I were to go to a restaurant and pay for a meal in bitcoins the price at the start of the meal would almost certainly be different ...
8
votes
4answers
387 views

Psychological price

I live in Europe, and more than a decade ago our national currency was replaced by the Euro. For a few years, everyone calculated back the price in Euro to the old currency when buying something, ...
8
votes
3answers
1k views

“Market capitalization” over time

Is there a convenient data source and/or graph that gives the "market capitalization" over time for Bitcoin (i.e. the number of bitcoins issued to date times their current value on the big exchanges). ...
8
votes
2answers
836 views

Trying to understand the bitcoin chart

I'm trying to understant this bitcoin chart, but there's no indication of what's the Y axis. The "200K" means the value in dollars? Or in bitcoins? Or what? I'm trying to check out the value of a ...
8
votes
1answer
431 views

Is there an API for price estimation?

I need to display at my website what a certain amount of Bitcoins will likely cost. I can fetch the latest price using the MtGox API and multiply it by the amount, but for large amounts this is ...
8
votes
5answers
10k views

Is there a Bitcoin gadget for Windows 7?

Is there a Bitcoin gadget for Windows 7, which features conversion rate with EUR? (i.e. EUR/BTC)
7
votes
3answers
1k views

Why does the Bitcoin conversion rate change wildly?

I don't understand why the conversion rate for bitcoin changes wildly. Why does it?
7
votes
4answers
1k views

How to stabilize Bitcoin's exchange rate (reduce volatility)?

Is it possible to stabilize exchange rate(s) of Bitcoin to FIAT currencies (USD, EUR etc.) and make the rates less volatile only by raising the market capitalization (more people buy/invest in Bitcoin ...
7
votes
3answers
284 views

Freelancer: billing my customers in bitcoin

I do freelance work and I was considering offering my customers the option of paying me in Bitcoin. Given that bills are usually paid in 2 - 4 weeks after sending them, and the exchange is still quite ...
7
votes
6answers
10k views

Why did Bitcoin lose value so fast in early January 2015?

What on earth is driving the price of Bitcoin and other alternative currencies down lately? It's one thing for it to go down a bit but losing practically 80% of its value in less than a year? I feel ...
6
votes
9answers
19k views

Displaying price in BTC based on USD exchange rate

This is a pretty classic programming question, but I think it is a very common one for the Bitcoin community, and would be helpful to have the code publicly available. My preference is for a php ...
6
votes
6answers
5k views

How much energy will the Bitcoin network eventually consume? [duplicate]

A recent Bloomberg article stated that the Bitcoin network currently consumes about half as much energy as the Large Hadron Collider or enough to power 31,000 US homes. Even if the article is way off ...
6
votes
6answers
15k views

Generating a Bitcoin Address QR code with current USD price embedded?

I'm creating a Bitcoin QR link with my website, but I want to be able to just link to a page that generates the QR code with the current USD price equivalent of BTC in the QR. I tried blockchain.info, ...
6
votes
4answers
2k views

How do bitcoin exchanges set prices?

What do exchanges base their Bitcoin and alt currency prices on? What makes them say that they will sell bitcoins for certain amount? Do they increase and decrease their price based on what other ...
6
votes
1answer
1k views

Is Ripple's trade history recorded?

Currently there isn't a graph of the ripple trade values. I'd like to know if each trade is recorded in the Ripple's equivalent of the blockchain, so that if in future someone wants to build such ...
6
votes
2answers
4k views

How will the Bitcoin network look after BFL ASIC hardware shipments?

There have been over 7000 pre-orders of BFL SC series mining machines, with the cheapest one supposedly running at 3.5 GH/s and the most expensive being 1000GH/s thats a lot of hashes about to be ...
6
votes
2answers
2k views

Is there any desktop notifier application for bitcoin prices?

There's a nice C2DM push based notifier for android but I'd like to know if there is one for the desktop environment, ideally linux? Does anyone know if one exists?
6
votes
3answers
3k views

What happens if an exchange's order book has only Market Orders [closed]

If a bitcoin exchange offers Market Orders, let's suppose there are X buy orders at market price, and Y sell orders at market price (no limit orders): How are these matched and at what price, since ...
6
votes
3answers
1k views

Pricing bitcoins

Bitcoin functions as a a quasi-commodity currency and I believe it can be priced according to particular factors, variables, instead of simply by the supply and demand in the exchange order book. The ...
6
votes
1answer
135 views

How does Ripple decide which offer to fulfil if they offer the same rate?

If two offers have the same exchange rate, how does Ripple decide which one to fulfil first?
5
votes
1answer
660 views

What are some of the proposed ideas to why the Bitcoin dropped to sub $400 in the end of summer 2014?

Having seen that BTC was around $600 early summer of 2014 (May-July). It is currently almost 50% of that value. I read many varying reports of the cause of such a big drop. Can someone give a list of ...
5
votes
3answers
522 views

Bitcoin price drop in the past few days (25/10/12 to 27/10/12)

Does anyone have any solid ideas or knowledge on why the price has dropped so much over the past few days? There is a lot of speculation, but nothing I have read to date seems to adequately explain ...
5
votes
3answers
4k views

Bitcoin's real-time Buy and Sell price API

What is the API to get Bitcoin's real-time Buy price and sell price on my site? and how can get it from to implement in my website developed in PHP.
5
votes
3answers
4k views

Where can I download BTC historical ticker data?

Where can I download historical data for Bitcoin price for mtgox? In this 2 Year old thread: Where can I get historic data series of Bitcoin prices? The described solution is as follows: download ...
5
votes
2answers
107 views

BTCUSD mean value

Recently I've heard of a site which gathers prices from some exchanges, and gives you a mean value. I've tried googling for it and I failed, couldn't find anything related for some reason. Could you ...
5
votes
4answers
3k views

What is the Bitcoin spot price and how is it calculated?

I was offered to buy Bitcoin for today's spot price (MtGox to be specific). So, I am wondering, what is the spot price and how is it calculated? Is there a standard tool to look it up?
5
votes
4answers
135 views

Bitcoin taxes question for USA

If one were to receive Bitcoins then immediately use a conversion service (for example to PayPal) would gains/losses need to be recorded? If so, is there any software that can do this automatically? ...
5
votes
2answers
161 views

Is price volatility necessarily a bad thing?

Discussions of BitCoin as the potential basis for a future global monetary system often point to the currency's price volatility as a shortcoming. Fiat currencies, by comparison, are (mostly) a lot ...
5
votes
2answers
927 views

How does Mt.Gox calculate high and low price?

How does Mt.Gox. calculate high and low price? How can last price, over time, be higher than the high price?
5
votes
3answers
2k views

Does LTC price correlates to BTC price?

I always expected the LTC and BTC exchange rate to show synchronous tops/bottoms, but to my surprise LTC seems to remains stable during BTC crashes (and vice versa). Is this because I'm a novice at ...
5
votes
1answer
281 views

How can we trust big exchanges? [closed]

After reading the question What are ways a BTC Exchange could steal from its customers, and how can they protect themselves?, it would seem that you can't really trust the big exchanges (or anyone) ...
4
votes
2answers
521 views

Why is the exchange rate of Bitcoins the same for everyone?

If I open Google and type 1 Bitcoin to Dollar I'm returned with a number (as of writing, "1 Bitcoin equals 246.09 US Dollar"). But where does this number come from? Given the decentralized nature of ...
4
votes
2answers
29k views

What determines a bitcoin's value? [duplicate]

I've been talking with my friend about this, and apparently, it seems that Bitcoins have some sort of value that is given to them. On some websites like bitstamp, there are graphs and charts that ...