A Comprehensive Guide to Fetching Bitcoin Market Data Using Go

Bitcoin has become one of the most popular cryptocurrencies in the world, and developers often need to access real-time market data for various applications. This guide explores how to use a Go language tool to fetch Bitcoin price information across multiple currencies.

Understanding the btcprice Tool

The btcprice tool is a command-line application written in Go that allows users to:

• Get current Bitcoin prices in different currencies
• Convert specific amounts of Bitcoin to fiat values
• Choose between silent and verbose output modes

./btcprice:
-c float
count of btcoin
-m silent model ,without loading output
-s string
refer to : https://blockchain.info/ticker (default "USD")

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Basic Usage Examples

Here are some common ways to use the btcprice tool:

Getting Default USD Price

root@mac > ./btcprice
$ 7413.92

Getting Price in Chinese Yuan

root@mac > ./btcprice -s CNY
¥ 46429.95

Converting Specific Bitcoin Amount

root@mac > ./btcprice -s CNY,USD -c 0.044454
¥ 46429.95 2064.00
$ 7387.46 328.40

Supported Platforms

The tool is designed to work across multiple operating systems and architectures:

Available Currency Options

The tool pulls data from Blockchain.info’s API and supports numerous currencies:

json
{
"USD" : {"15m" : 7392.1196853, "last" : 7392.1196853, "buy" : 7392.1196853, "sell" : 7392.1196853, "symbol" : "$"},
"AUD" : {"15m" : 9614.19086270118, "last" : 9614.19086270118, "buy" : 9614.19086270118, "sell" : 9614.19086270118, "symbol" : "$"},
"BRL" : {"15m" : 24473.82985409124, "last" : 24473.82985409124, "buy" : 24473.82985409124, "sell" : 24473.82985409124, "symbol" : "R$"},
"CAD" : {"15m" : 9513.680211340155, "last" : 9513.680211340155, "buy" : 9513.680211340155, "sell" : 9513.680211340155, "symbol" : "$"},
"CHF" : {"15m" : 7050.832911549384, "last" : 7050.832911549384, "buy" : 7050.832911549384, "sell" : 7050.832911549384, "symbol" : "CHF"},
"CLP" : {"15m" : 4476371.996630267, "last" : 4476371.996630267, "buy" : 4476371.996630267, "sell" : 4476371.996630267, "symbol" : "$"},
"CNY" : {"15m" : 46459.22828216088, "last" : 46459.22828216088, "buy" : 46459.22828216088, "sell" : 46459.22828216088, "symbol" : "¥"},
"DKK" : {"15m" : 44703.10458488322, "last" : 44703.10458488322, "buy" : 44703.10458488322, "sell" : 44703.10458488322, "symbol" : "kr"},
"EUR" : {"15m" : 6014.0386327, "last" : 6014.0386327, "buy" : 6014.0386327, "sell" : 6014.0386327, "symbol" : "€"},
"GBP" : {"15m" : 5249.868616260689, "last" : 5249.868616260689, "buy" : 5249.868616260689, "sell" : 5249.868616260689, "symbol" : "£"},
"HKD" : {"15m" : 58021.76013031659, "last" : 58021.76013031659, "buy" : 58021.76013031659, "sell" : 58021.76013031659, "symbol" : "$"},
"INR" : {"15m" : 480543.2204421397, "last" : 480543.2204421397, "buy" : 480543.2204421397, "sell" : 480543.2204421397, "symbol" : "₹"},
"ISK" : {"15m" : 729232.606954845, "last" : 729232.606954845, "buy" : 729232.606954845, "sell" : 729232.606954845, "symbol" : "kr"},
"JPY" : {"15m" : 789070.3094152, "last" : 789070.3094152, "buy" : 789070.3094152, "sell" : 789070.3094152, "symbol" : "¥"},
"KRW" : {"15m" : 7803786.830574358, "last" : 7803786.830574358, "buy" : 7803786.830574358, "sell" : 7803786.830574358, "symbol" : "₩"},
"NZD" : {"15m" : 10196.342464277612, "last" : 10196.342464277612, "buy" : 10196.342464277612, "sell" : 10196.342464277612, "symbol" : "$"},
"PLN" : {"15m" : 25264.417054434074, "last" : 25264.417054434074, "buy" : 25264.417054434074, "sell" : 25264.417054434074, "symbol" : "zł"},
"RUB" : {"15m" : 425179.94005908543, "last" : 425179.94005908543, "buy" : 425179.94005908543, "sell" : 425179.94005908543, "symbol" : "RUB"},
"SEK" : {"15m" : 61881.119288934555, "last" : 61881.119288934555, "buy" : 61881.119288934555, "sell" : 61881.119288934555, "symbol" : "kr"},
"SGD" : {"15m" : 9681.902679018529, "last" : 9681.902679018529, "buy" : 9681.902679018529, "sell" : 9681.902679018529, "symbol" : "$"},
"THB" : {"15m" : 230560.212984507, "last" : 230560.212984507, "buy" : 230560.212984507, "sell" : 230560.212984507, "symbol" : "฿"},
"TWD" : {"15m" : 215481.30893901156, "last" : 215481.30893901156, "buy" : 215481.30893901156, "sell" : 215481.30893901156, "symbol" : "NT$"}
}

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Frequently Asked Questions

How accurate is the Bitcoin price data?

The tool fetches data directly from Blockchain.info’s API, which provides real-time pricing information updated every 15 minutes (as indicated by the “15m” field in the JSON output).

Can I use this tool for commercial purposes?

You should review the terms of service for both the tool itself and the Blockchain.info API to determine any usage restrictions.

How do I install the btcprice tool?

The installation process would typically involve downloading the appropriate binary for your system from the GitHub repository and ensuring it has proper execution permissions.

What’s the difference between “buy” and “sell” prices?

The buy price represents how much you would pay to purchase Bitcoin, while the sell price shows how much you would receive when selling. The spread between these prices represents the exchange’s fee.

Can I get historical price data with this tool?

The current implementation only provides real-time pricing. Historical data would require additional development or a different data source.

Is this tool secure to use?

The tool itself only makes read-only API calls to fetch price data and doesn’t require any sensitive credentials. Always verify the source of any executable before running it on your system.