# BTC BTC refers to [**Bitcoin**](https://bitcoin.org/en/). It is the first blockchain-based cryptocurrency. It first went online in 2009 and has a total supply of 21 million tokens. It is automatically issued in the form of fees that are awarded to miners and can be bought at various crypto exchanges. It is considered to be the cryptocurrency with the highest liquidity. --- # 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://docs.onto.app/basics/assets-management/btc.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.