> For the complete documentation index, see [llms.txt](https://dagora.gitbook.io/guides/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dagora.gitbook.io/guides/beginner/lessons/readme.md).

# Distributed Ledgers

A blockchain is a distributed ledger. Distributed ledger technology is notoriously known as a blockchain. A blockchain is a system of recording information in a way that makes it difficult or impossible to change, hack, or cheat the history— *data is highly immutable and encrypted.* 

{% hint style="info" %}
*Information on a blockchain gets recorded in the form of '**inputs**' known as transactions*
{% endhint %}


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