# What is blockchain Have you ever wondered what's behind the **blockchain** **technology**? When two people want to operate a transaction, they usually need a trusted third party, like a bank. Now, imagine a network that allows **peer-to-peer transactions** which involves only two parties: the **sender** and the **receiver**. The blockchain technology is a **decentralized**, **distributed** and **transparent** digital ledger that records transactions. It's a **database** containing the **history** of all exchanges realized between users since its creation. It stores encrypted blocks of data then chains them together chronologically. Validators keep their own copy of the ledger and make sure they always agree with the content of the ledger. That is what blockchain brings us! --- # 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.undergroundmoods.com/faq/technology/what-is-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.