🌐 “What is Layer 0?” Think of it as the main road connecting all the small blockchains together.
You have heard of Layer 1 like Ethereum, Solana...
You have also heard of Layer 2 like Arbitrum, Optimism...
So what is Layer 0? Where does it fit in?
💡 Simply put:
Imagine blockchains as separate cities.
Each city (Layer 1) has its own rules, its own people, but it's hard for them to communicate with one another.
Layer 2 is like the subway stations in that city that help you get around faster.
And Layer 0 is… the interstate highway, enabling blockchain cities to communicate, connect, and exchange data with each other!
Layer 0 is not a specific blockchain, but a foundation for building many other blockchains, allowing for:
Interoperability between networks (cross-chain),
Launching new blockchains more easily and quickly.
🧠 Real-world examples:
Polkadot is Layer 0 that allows “parachains” to operate within a single system.
Cosmos is Layer 0 that helps blockchains like Cronos, Osmosis… communicate with each other.
Celestia separates the “data” part as a foundation for blockchain apps to build upon.
✅ In summary:
Layer 0 is the lowest foundational layer that helps other blockchains connect with each other, share data, and develop more easily.