A decentralized computer system

Adding code into blocks

Adding code into blocks - Demo

Triggering smart contracts

Triggering smart contracts - Demo

Trigger transactions are added to the next block

Trigger transactions are added to the next block - Demo

Miners execute the code when mining

Miners execute the code when mining - Demo

Virtual machines run the code

What does it cost to run smart contracts? 

Transaction fees - Demo

What happens when the code is executed?

1️⃣ Smart contracts creating a new transaction - Demo

2️⃣ Smart contracts updating the state - Demo

Recap

Big picture: advantages of decentralization

Big picture: what is possible with smart contracts?

Big picture: limitations of smart contracts

1 Section

Transition to Web3 - Course 4 | How Smart Contracts Work

Just like we can add any data into a block, we can add software programs into a block.&nbsp;
🕵️‍♀️ Definition: These software programs that go into the blocks are called “smart contracts.”
For example, let’s create a program named buyBook. In this example, buyBook manages a very simple transaction: