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58 votes

What happens if I buy Bitcoins and the price goes down?

If you bought a bar of gold at $1200 / ounce, then the price of the gold drops to $600 / ounce, you wouldn't actually lose any money at all unless you decided to sell your gold at that time. However, ...
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28 votes

What happens if I buy Bitcoins and the price goes down?

If you bought one bitcoin and the price goes down, you still have one bitcoin. If the price goes up...still one bitcoin. This is just like everything else, including groceries, gasoline, gold, stock ...
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  • 8,724
19 votes

What would it take to create my own Bitcoin exchange?

Setting up and operating an exchange can be quite involved. A few tiers to start thinking about: legal, banking, tech+security, and volume. Legal The first question is whether you want to operate ...
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17 votes

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

I am developing the ccxt cryptocurrency trading library, check it out on GitHub: https://github.com/kroitor/ccxt It is a library for cryptocurrency trading and e-commerce with support for many ...
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16 votes
Accepted

Bitcoin market hours (open/close prices)

In 24 hour markets High and Low usually mean "highest/lowest price in last 24 hours". Open generally refers to the price at 12:01 AM UTC of any given day and close generally refers to the price at ...
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  • 6,189
13 votes

What happens if I buy Bitcoins and the price goes down?

tl;dr- This is called a capital loss. You're said to realize the capital loss if you sell the Bitcoins at the lower price, such that you lost money due to having bought/sold them. However, note ...
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  • 241
11 votes

What happens if I buy Bitcoins and the price goes down?

The answer is not unique to bitcoin. It would be the same if you're dealing with (non-crypto) foreign currency, stock, a stock derivative or commodity or commodity futures. When you buy something ...
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  • 211
9 votes

What happens if I buy Bitcoins and the price goes down?

Yes, you lose a quantity of your money, at the time you gave it away in exchange for the bitcoin you received. Subsequent changes in the exchange rate only vary the hypothetical value of what you ...
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8 votes

Anyone know of an API for RSI and other indicators?

I had the same problem, couldn’t seem to find a good API that supported most of the popular indicators, and at the same time covered all the exchanges. So I decided to start up a project for this. So ...
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  • 91
7 votes

Limit order versus Market order

In a limit order, you specify how much of the asset (in this case BTC) you want to buy or sell, and the price you want. If there are matching orders on the book (e.g. someone who wants to sell at the ...
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7 votes

Losses when trading with bitcoins

Yes, absolutely. Here's just one example of how this can happen: You invest Bitcoins worth $100 in some kind of high interest scheme. You cash out of the scheme and get Bitcoins worth $200. You ...
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7 votes
Accepted

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

Found the data on crypto compare const endpoint = 'https://min-api.cryptocompare.com/data/histoday?aggregate=1&e=CCCAGG&extraParams=CryptoCompare&fsym='+ ticker.toUpperCase() +'&limit=...
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7 votes

How to tell if a cryptocurrency exchange or trading platform is trustworthy?

Here's a few checks I'd advise anyone to do. Does it promise to earn you more than 10% profit in less than a month? If so it is a fraud. Does it make implausibly impressive claims like "SEC ...
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6 votes

Why don't people buy at one exchange and sell at another?

Something I am currently looking into, and a huge issue that nobody has really mentioned earlier is blockchain time. 1) Bitcoin is traded on a number of exchanges, however the entire process of ...
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6 votes

How good is "bitcoin-trader.biz"?

Their claims are, IMO, implausible. If they're not in it for an honest profit, what are they in it for? If they are in it for an honest profit, what do they need your money for? They're essentially ...
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6 votes
Accepted

How to read an exchange order book?

Irrespective of bullish or bearish outlook, there are two attitudes a trader can have in the market: active or passive. Limit orders and stop orders are "passive" trades because they don't move ...
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  • 599
5 votes

Transferring Bitcoins from Wallet to Wallet

1) The exchange that has your bitcoin should have the option to withdraw bitcoins. It will then ask you to what bitcoin address you want to withdraw and how much. 2) The exchange you want to transfer ...
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5 votes
Accepted

Library for trading on major exchanges

Check out xchange on github:: https://github.com/timmolter/XChange It works on multiple exchanges, and is written in Java.
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  • 164
5 votes

How to transfer different cryptocoins from one daemon to another

How do you transfer your potatos into rice? You go to market, find somebody who wants to "transfer" his rice into potatos and exchange it with him. There's no direct way of transfering one commodity ...
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  • 1,394
5 votes
Accepted

Why do most trading platforms require ID Verification?

In the US, these are called "Know your Customer", and "Anti Money Laundering" (KYC/AML) laws and is enforced by FINCEN (financial crimes enforcement network) in the US for any businesses that ...
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  • 2,052
5 votes

Bitcoin market hours (open/close prices)

For the Gemini exchange the closing price is at the time of their daily auction at 4pm ET. You can read more about the auction here: https://gemini.com/marketplace/ And why it is considered their "...
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5 votes

Algorithmic trading python library?

Check out my ccxt library on GitHub: https://github.com/kroitor/ccxt With it you can access market data and trade bitcoin, ether and altcoins with many crypto currency exchanges. It is used to ...
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5 votes

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

http://www.cryptocoincharts.info Advance API to more than 100 exchanges: cryptocurrency pricing, OHLC and volume data from multiple exchanges. BTC38, BTCC, BTER, Bit2C, Bitfinex, Bitstamp, Bittrex, ...
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  • 59
5 votes

Why is the USD spread of the order book on GDAX kept very low most of the time?

GDAX offers 0% fee to maker (traders who's trades are being matched by a seller or buyer). That incentives traders to try to match bid and ask as close as possible thus reducing spreads.
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  • 1,254
5 votes

Trading Bitcoins through binary miner

Their homepage advertises them as: WORLD'S BEST RISK FREE FOREX, BINARY AND BITCOIN INVESTMENT Any entity that advertises any form of trading as risk free is a scam. Essentially all binary options,...
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  • 16.5k
4 votes
Accepted

How do exchanges decide on cryptocurrency trading pairs?

Exchanges generally choose a few base currencies and build trading pairs on top of them. It has multiple reasons: The exchange needs to find a base currency where people can understand the value of X ...
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  • 3,148
4 votes

What would cause the price of Bitcoin to flatline for several hours on Bitstamp?

I think this was "Bitcoin Sell Wall of Death" at Bitstamp. Somebody sold 31 000 BTC at 300 USD. The wall was eaten over Sunday-Monday night. https://www.cryptocoinsnews.com/bitcoin-sell-wall-death-...
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4 votes

Bitcoin market hours (open/close prices)

Traditional markets are not open for trade all day, so the opening and closing price refer to the first and last price of the day. They are used as measurements for the trading activity of a day. ...
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  • 63.4k
4 votes
Accepted

What is the purpose of XBTEUR.d tradable pair?

The difference between XBTEUR and XBTEUR.d is that the former is on the "regular" kraken exchange whereas the latter is on a dark pool. In substance, dark pool orders are only visible to the exchange ...
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  • 156
4 votes

Anyone know of an API for RSI and other indicators?

You can calculate it yourself. Use an API to get the gains and losses over an period of 14 points and put it into the formula described here: http://stockcharts.com/school/doku.php?id=chart_school:...
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  • 141

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