# Cryptocurrency Also called virtual currency, **cryptocurrency** is a form of currency that exists only digitally and has no central issuing or regulating authority above it - it is controlled by the community. It uses blockchain technology to authenticate transactions. **Blockchain** is a **decentralized technology** spread across numerous computers, that manages and records transactions. As such, it does not rely on banks to verify transactions, but is used as a **peer-to-peer** system enabling users to send and receive payments from and to anywhere in the world. In 2020, the **global cryptocurrency market size was valued at $1.49 trillion**, and is projected to reach **$4.94 trillion by 2030**, growing at a CAGR of 12.8% from 2021 to 2030. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://breach-gg.gitbook.io/breach-gg/market/cryptocurrency.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.