Integer Types in Bitcoin
What is an Integer?
- An integer is a whole number that can be positive, negative, or zero. Examples include -5, 0, and 7.
- Importantly, an integer does not have fractional or decimal components—it's always a complete, undivided number.
- While we commonly think of integers in the decimal (base 10) system, they can actually be represented in any numeral system, including binary (base 2), hexadecimal (base 16), and others.
- Regardless of the base used to represent it, an integer remains an integer because it is a whole number without any fractional parts.
How is Unsigned Relevant in Bitcoin?
In Bitcoin, unsigned integers are used to ensure that important values, like transaction amounts and block heights, are always positive. This helps maintain data accuracy and prevents errors in the blockchain.
How do Integer Concepts Apply to Bitcoin?
Integers in Bitcoin are used to store and manage vital data such as block heights, timestamps, and transaction amounts. For example, a 32-bit unsigned integer can store numbers up to over 4 billion, which is sufficient for many of Bitcoin's needs, like tracking the number of blocks or recording transaction values.
Try It Out: Decimal to Binary Converter
Convert a decimal number (0-255) to its 8-bit binary representation:
Exercise: Find the Maximum Value
Use the knowledge you've just learned to find out the maximum value that can be stored in a 4-bit, 8-bit, and 16-bit unsigned integer.
Test Your Knowledge
Quiz
What is an unsigned integer?
What is the maximum value that can be stored in an 8-bit unsigned integer?
Why are unsigned integers used in Bitcoin?