# Create a new blockchain

### Basic architecture of a blockchain network

<figure><img src="/files/Xtt7TIAE4Nba0HlQpHGO" alt=""><figcaption><p>Basic architecture of a blockchain network</p></figcaption></figure>

### What is a Polkadot SDK?

Learn more about Polkadot SDK: <https://polkadot.com/platform/sdk>

<figure><img src="/files/a6fPqq45pkZbDjshMPQG" alt=""><figcaption><p>Key Features of Polkadot SDK</p></figcaption></figure>

### What is a Substrate framework?&#x20;

Polkadot is a layer-0 protocol and multichain network laying the foundation for the future of Web3. Substrate is the primary blockchain SDK used by developers to create the parachains that make up the Polkadot network.

* Learn more about Substrate: <https://substrate.io/vision/substrate-and-polkadot/>

{% content-ref url="/pages/P10a32KHIwyvgrkjPKj5" %}
[Understanding the architecture](/building-a-blockchain-with-polkadot-sdk/polkadot-sdk/substrate/create-a-new-blockchain/understanding-the-architecture.md)
{% endcontent-ref %}

### Create a new blockchain with Pop CLI

{% content-ref url="/pages/UM7xZLRvWn1JmE7cAsOh" %}
[Introducing to Pop CLI tool](/building-a-blockchain-with-polkadot-sdk/polkadot-sdk/substrate/create-a-new-blockchain/introducing-to-pop-cli-tool.md)
{% endcontent-ref %}

### Running a solochain

{% embed url="<https://docs.substrate.io/tutorials/build-a-blockchain/build-local-blockchain/>" %}

### Running a local relaychain / parachain network

Building a parachain on Polkadot Wiki: <https://wiki.polkadot.network/docs/build-guide#building-parachains>

<figure><img src="/files/MoHYNjM3toBVWUljCyS6" alt=""><figcaption><p>Components of a Polkadot network with Relay Chain &#x26; Parachains</p></figcaption></figure>


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