---
title: Intro to Blockchain
description:
  Understand the core blockchain model and how it maps to Solana development.
---

## What you will learn

- The core blockchain primitives used by application developers.
- How accounts, transactions, and program execution differ on Solana.
- Why throughput, fees, and parallel execution matter for product design.

## Build checklist

- Define the state model for your first app in plain language.
- Identify what data should be on-chain vs off-chain.
- Write down one performance and one security assumption to validate later.