> ## Documentation Index
> Fetch the complete documentation index at: https://docs.theblockchainlibrary.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Polkadot

> Polkadot connects parachains under a shared relay-chain security model, enabling cross-chain communication.

# Polkadot

Polkadot connects parachains under a shared relay-chain security model, enabling cross-chain communication.

**A heterogeneous multi-chain framework with shared security.**

Polkadot connects parachains under a shared relay-chain security model, enabling cross-chain communication.

## Resource details

* **Organization:** Web3 Foundation
* **Category:** Layer 1
* **Difficulty:** advanced
* **Official:** Yes
* **Editorial label:** Solid Reference

## Official resource

[Visit Polkadot](https://polkadot.network)

## Related knowledge

* [Cosmos](/generated/v2/resources/cosmos) — resource
* [Cosmos](/generated/v2/resources/cosmos) — related-resource
* [Substrate](/generated/v2/resources/substrate) — resource
* [Substrate](/generated/v2/resources/substrate) — related-resource

***

**Canonical knowledge ID:** `resource:polkadot`