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</h2>
<div class="ecosystem__module__details">
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<p>
<em>
This section assumes "blockchain" already means something to you. If you're totally new, the key problem solved by blockhain is the ability for distributed, disparate entities to all agree on a rivalrous state of affairs (such as account balances or metadata associated with a URL).
</em>
</p>
<p>
The LBRY blockchain is a public and uses proof-of-work consensus. It is the foundation of the protocol stack.
</p>
<p>
The most salient feature of the LBRY blockchain is the association of a normalized character string with up to 8KB of metadata.
This string of characters forms a LBRY URL, e.g.
</p>
<p>
The LBRY blockchain contains two parallel [[Merkle Tree]]s, one for transactions (ala Bitcoin) and one for storing LBRY URLs and metadata.
</p>
<p>
Conventionally, this metadata contains information about the content, such as the title and creator, the price (if any), and a unique signature allowing the actual content to be fetched from the data network, the next level in the LBRY stack.
</p>
<h3>Additional Resources</h3>
<ul>
<li>
See the [Whitepaper]
</li>
<li>
See [[Naming]] for learning more about LBRY URLs and how they work.
</li>
<li>
See [[Identities]] for learning how the LBRY blockchain handles publisher identities.
</li>
</ul>
</div>
<span class="__close" v-on:click="close()">&times;</span>

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title: Overview
---
# Introduction to LBRY protocol
## Mission
What if anyone in the world could publish a piece of digital content, anyone else in the world could access it, for free or for payment, and that entire system worked end-to-end without any centralized authority or point of control?
What if anyone in the world could publish a piece of digital content, anyone else in the world could access it, for free or for payment, and that entire system worked without any centralized authority or point of control?
That's the idea behind LBRY. To create a market for accessing and publishing information<sup>1</sup> that is global<sup>2</sup>, decentralized<sup>3</sup>, robust<sup>4</sup>, optimal<sup>5</sup> and complete<sup>6</sup>.
That's the idea behind LBRY.
<div style="max-width: 800px; margin: 40px auto; font-size: 2.0em">To create a market for accessing and publishing information<sup>1</sup> that is global<sup>2</sup>, decentralized<sup>3</sup>, robust<sup>4</sup>, optimal<sup>5</sup> and complete<sup>6</sup>.</div>
That's a fancy sentence, so here's a plainer one: we just thought it'd be really damn cool if there was a system that stored as much of the world's information as possible, but was owned and controlled by no one.
<sup>1</sup>In the information theoric sense, i.e. any data. LBRY facilitates distribution of all data, whether it be a video or a spreadsheet.
<sup>1. In the information theoric sense, i.e. any data. LBRY facilitates distribution of all data, whether it be a video or a spreadsheet.</sup>
<sup>2</sup>Accessible anywhere in the world on any internet-connected device.
<sup>2. Accessible anywhere in the world on any internet-connected device.</sup>
<sup>3</sup>Not controlled by any one person, party or authority.
<sup>3. Not controlled by any one person, party or authority.</sup>
<sup>4</sup>Resistant to censorship or attempts to control; impervious to attacks or disruptions.
<sup>4. Resistant to censorship or attempts to control; impervious to attacks or disruptions.</sup>
<sup>5</sup>In the Pareto sense, with regards to the production and distribution of information (i.e. digital information is both created and distributed in a way that could not be any more efficient from the perspectives of information producers and consumers).
<sup>5. In the Pareto sense, with regards to the production and distribution of information (i.e. digital information is both created and distributed in a way that could not be any more efficient from the perspectives of information producers and consumers).</sup>
<sup>6</sup>The most complete collection of worlds books, films, art, games, etc. should be available via LBRY.
<sup>6. The most complete collection of worlds books, films, art, games, etc. should be available via LBRY.</sup>
## LBRY Basics
## Ecosystem Overview
Learn more about how LBRY works from this ecosystem overview.
<Ecosystem/>
## What's Next?
## Keep Diving
- Try LBRY
- Contribute to things
- Build things
- Explore live metadata and add your own blockchain entry on [the Tour](/tour).
- Read the whitepaper, the API specification and other documentation in [Resources](/resources).
- Learn how to [contribute to LBRY](/contributing) or [build your own application](/build).