ELI5: what is the difference between blockchain and web3

Blockchain is like a shared, super-safe notebook, while Web3 is like a whole new internet built using that notebook.

Imagine your class keeps track of who borrowed which toys from the toy box.

• Right now (Web2 – the internet we mostly use now), your teacher writes everything in their notebook. You have to trust them to write it fairly and not change things later.

• But what if, instead, everyone in the class had a copy of the notebook (blockchain)? Every time someone borrows a toy, it gets written in all the notebooks at the same time.

• Because everyone has a copy, nobody can cheat! If someone tries to change their notebook, everyone else can see that it's different and ignore it. This shared notebook is super secure and trustworthy.

• Instead of the teacher running everything, everyone in the class can suggest new toys, vote on which toys to buy, and even earn tokens for lending their own toys.

• This new library is built on top of the shared notebook (blockchain), so everything is transparent and fair. The "rules" of the library are written in a way that the shared notebook enforces them automatically. No one person controls it – it's run by everyone together!