71
votes
Accepted
Cryptocurrency Arbitrage - What do I need to know?
Arbitrage - What it is and how it works
Arbitrage refers to the process of instantly trading one or more pairs of currencies or odds for a nigh risk-free profit.
Usually, this involves two ...
- 1,672
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 ...
- 428
11
votes
Accepted
Is there any way to buy bitcoins online without a fee?
Of course you may trade bitcoins with just anyone without having to pay fees to a centralized exchange.
I think Bisq (formerly BitSquare) may be the best answer to the question; decentralized, free ...
- 821
10
votes
What is the strategy behind a sell wall?
I use this type of trading to accumulate buys at a cheaper price. Ex: if I spend 2 hours buying small amounts of coins so nobody notices the large buys, then I put up a large sell wall ($30k-$45k) to ...
- 101
10
votes
Accepted
Can I send bitcoin to other address in my wallet to provide anonymity?
Let's assume you're the outside observer. You see 1 BTC go from aaa to bbb, then from bbb to ccc, then from ccc to ddd, and them from ddd to zzz (zzz being associated with service Z). Can you see how ...
- 3,214
8
votes
Is there any way to buy bitcoins online without a fee?
Some Chinese exchanges don't charge a fee.
Any site that has possession of your bitcoins or dollars means there is at least some risk of getting ripped off.
So unfortunately, what you ask for doesn'...
- 7,729
8
votes
How much does it effectively cost to purchase currency at an exchange?
Essentially, you have to factor in 3 fees in a purchase:
1. Deposit fee (if applicable)
This is usually a fee for wire transfers, and from my experience is only relevant if you deposit cash across ...
- 1,672
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=...
- 461
6
votes
How to transfer bitcoin bought online to my desktop wallet?
You can easily send your bitcoins from Coinbase to Electrum.
Once logged into Coinbase click on the Send / Request button on your left hand menu. A form will pop up asking for an email address or ...
- 5,576
6
votes
Is there any way to buy bitcoins online without a fee?
There is no middle man for using Bitcoin. If all your income and expenses were in Bitcoin, the transfers would have negligible overhead. But what you are looking for is a service that will take your ...
- 19.6k
6
votes
How are Fees Charged at Kraken?
How are fees charged?
They are charged in the currency fee set during a trade.
Due to a discreet nature of trade matching process, it's rather tricky to give a definite answer on how each individual ...
- 1,672
6
votes
Incorrect bitcoin address funded
No you cannot recover Bitcoin sent to the wrong address.
Many people and businesses use HD wallets that generate a new address each time. If the recipient has provided you with a new address but you ...
6
votes
Is it safe/wise to buy bitcoins with a credit card?
Buying any crypto from your credit card is same as buying it through any other payment method. both are equally secure.
But always buy it from authentic source only, there are many scamming sites ...
- 316
5
votes
Accepted
BTC Exchanges and Counterparty Risk
To engage in trading on an exchange, you have to make a deposit of either fiat or Bitcoin. As the balances are then managed by the exchange until paid out, there is no counterparty risk to your ...
- 71.7k
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, ...
- 59
5
votes
Fiat to Satoshi Relationship
The number of satoshi per bitcoin is 1e8 or 100,000,000, so if you have a fiat value per bitcoin such as $7000/BTC, the calculation is:
$/satoshi = $7000/1e8 = $0.00007 per satoshi
Of course, ...
- 7,278
5
votes
buying bitcoins with debit cards that are not mine
I have a couple of friendswho want to purchase bitcoin, I would buy the bitcoins for everyone, that is why I have all of their card and personal info. I wanted to use a single wallet (mine) and then ...
- 17.9k
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,...
- 16.9k
5
votes
Accepted
How did Elon Musk buy Bitcoin when it is open source?
The Bitcoin network is a decentralized network of computers (nodes), that keeps track of bitcoin (BTC, the monetary unit). The Bitcoin network has no admin, no leader, no centralized point of control. ...
- 17.9k
4
votes
I need Fiat -> BTC merchant service
There used to be a service by coinvoice.com that did exactly what you're asking. Unfortunately, they're no longer operating. I've heard bitpagos.com does that for Latin America. Otherwise, you're ...
- 7,729
4
votes
Bitcoin address does not show transaction/balance from Coinbase purchase
I'm no expert but I'm a user of coinbase and noticed there's a mistake in ScripterRon's answer.
The first transaction moves the coins from an address controlled by
Coinbase to a new address ...
- 151
4
votes
What is the strategy behind a sell wall?
http://www.dancingbots.com [1] is visualizing the chronological sequence of limit orders on popular exchanges. You can see how those walls are repositioned if the price moves.
Those big positions are ...
- 151
4
votes
Accepted
Off-chain transactions with Coinbase
From the perspective of the Bitcoin network, Coinbase owns both the Bitcoins you transferred in, and the Bitcoins they sold to you.
This is useful from a technical perspective, because Coinbase can ...
- 29.2k
4
votes
How to build a Java trade bot
So you want to limit your bot strictly to gdax? There are some libs providing abstraction layers from a specific exchange. One example is
https://github.com/timmolter/XChange
This becomes very ...
4
votes
Accepted
What's the difference between a Bitcoin Wallet and a Bitcoin Exchange?
A bitcoin (or any crypto) wallet is simply a set of public/private keys. If you own the keys, you own any coins that those keys can access.
An exchange is very similar to a stock exchange. You ...
- 16.9k
4
votes
Accepted
What can you do with the private key?
Anyone who knows the private key will have full access and control of any coins stored at the corresponding address.
When you put a password on a wallet or login account, that password is only for ...
- 17.9k
4
votes
What can you do with the private key?
What if a person has your private key?
Then they have independent control over all the unspent Bitcoins associated with that private key. Once they have the private key there is nothing you can do ...
- 24.5k
4
votes
Accepted
How do websites sell cryptocurrency with fiat payments?
Essentially you want to start a cryptocurrency exchange? If that is true, you need liquidity for people to be able to buy these coins. There are two ways of going about it:
Use a broker/third party ...
- 156
4
votes
Isn't burning bitcoins a kind of fraud?
BitCoin burning is the process by which digital currency miners and developers can remove bitcoins from circulation
I think you'll find that "Bitcoin burning" refers to owners of Bitcoin ...
- 24.5k
3
votes
Accepted
Is it safe to authorize Coinbase to withdraw cash directly from my bank account?
They don't need your password to process the ACH in the future. this sounds like they used your banking credentials to verify that it really is your account. You should be able to change your ...
- 250
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