> For the complete documentation index, see [llms.txt](https://bootcamp.openguild.wtf/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bootcamp.openguild.wtf/building-a-blockchain-with-polkadot-sdk/polkadot/additional-reads/why-do-you-want-to-build-a-blockchain-on-polkadot.md). # Why do you want to build a blockchain on Polkadot?

If you search on Google: "Is building a blockchain hard?"

Building a blockchain is not an easy process. You can take a 4 months bootcamp to learn how to build a fullstack web application. However, with blockchain engineering, it requires strong foundational knowledge in computer science, networking and cryptography to build something that is usable by the industry.

There are a lot of domain specific knowledge to build a blockchain
that is beneficial to the industry

**Polkadot SDK** provides a framework for you to use to build a blockchain easily without caring much about other primitvie knowledge and low-level engineering like cryptography, virtual machine, database...and only need to focus on building what matters to the logic of the blockchain. This is so-called application specific blockchain.

Substrate Client is a game console while the logic built on top of it is
a game catridge that only need to plug and play

And there is another anology I really like is the LEGO bridge analogy:

Building a blockchain with Substrate is like playing LEGO
What you want to build is a complete LEGO house aka a blockchain
And what you have is single solid LEGO bridge aka a Substrate framework

You just simply add these small blue LEGO bridge on top of your Substrate LEGO bridge.
And BAMP! You have a complete blockchain

## Benefits of building a blockchain on Polkadot {% embed url="" %}