# The Bitcoin Halving I know, I know, this guide was not meant to dive into the functionality of crypto, but understanding how bitcoin works is crucial to your investment decision making. To summarize the bitcoin halving, it is an event every four years in which the supply is reduced (not an entirely accurate description, so watch the video below for a better explanation). {% embed url="" %} Let’s look at the historical price of bitcoin in relation to these *halvings*:
As we can see, every halving has historically been a catalyst for a *bull run* lasting 12-18 months. At about 2 years after each halving, the price of bitcoin tends to fall back down, before heating back up for the next halving. --- # 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://solanaupdate.gitbook.io/the-crypto-bible/investing/when-to-buy-when-to-sell/the-bitcoin-halving.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.