# What is Crypto currency?

By [Abhishek Singh](https://paragraph.com/@k0777) · 2022-05-19

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A cryptocurrency (or “crypto”) is a digital asset that can circulate without the need for a central monetary authority such as a government or bank. Instead, cryptocurrencies are created using cryptographic techniques that enable people to buy, sell or trade them securely.

Bitcoin and most other cryptocurrencies are supported by a technology known as blockchain, which maintains a tamper-resistant record of transactions and keeps track of who owns what. The creation of blockchains addressed a problem faced by previous efforts to create purely digital currencies: preventing people from making copies of their holdings and attempting to spend them twice.

Cryptocurrencies let you buy goods and services, or you can trade them for profit. Here's more about what cryptocurrency is, how to buy it and how to protect yourself.

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*Originally published on [Abhishek Singh](https://paragraph.com/@k0777/what-is-crypto-currency)*