# Blockchain #### The Basics A @blockchain is a distributed database that continuously grows with a record of all of the transactions that have occurred with a given cryptocurrency. This database is often referred to as a ledger because the data contains a large list of transactions that have taken place. In Haven, these transactions are packaged together into 'blocks' every 2 minutes (on average), and all miners and nodes on the network have copies of these blocks. #### Haven's @Blockchain Unlike Bitcoin and other cryptocurrencies, transactions in the Haven @blockchain do not reveal where funds came from or went to, providing anonymity and making the currency completely @fungible. Additionally, the amounts of all transactions are hidden by @RingCT, a feature of Haven. For auditing or other transparency purposes a user can share a @view-key to prove they control certain amounts of Haven. --- # 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://wiki.havenprotocol.org/overview/blockchain.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.