Nodes and Network Validation

7 min readarticleIncludes quiz · 3 questions

Nodes are the backbone of Bitcoin's decentralization. They validate transactions, enforce rules, and maintain the blockchain.

Types of Nodes:

Full Node:

  • •Stores complete blockchain (400+ GB)
  • •Validates all transactions and blocks
  • •Enforces all consensus rules
  • •Doesn't trust, verifies everything

Light Node (SPV):

  • •Stores only block headers
  • •Relies on full nodes for validation
  • •Good for mobile wallets
  • •Less secure but more practical
Running a Bitcoin Node
Running a Bitcoin Node

Why Run a Node?

  • •Verify don't trust: Check your own transactions
  • •Privacy: Don't reveal your addresses to others
  • •Support the network: Help decentralization
  • •Vote with your node: Enforce the rules you agree with
  • •Learn: Understand Bitcoin at a deeper level

Test Your Knowledge

This lesson includes a 3-question quiz (passing score: 75%).

Quiz functionality available in the mobile app.