Crypto Tech Week

Unlocking the core tech behind Bitcoin—one day, one concept, five key points. Simple, smart, and straight to the chain.

Day 3: What Are Nodes and Why They Matter

It’s not just about miners—nodes are the real guardians.

1. Full Nodes = Truth Keepers: They store the whole blockchain and check every transaction.

2. Light Nodes: Store less, but still validate. Great for mobile wallets.

3. Decentralization Power: The more nodes, the harder it is to fake data.

4. Consensus Rules: Nodes follow the same “rulebook” to agree on what’s legit.

5. Peer-to-Peer Network: No middleman. Just you and the system.