Miners as Construction Workers and Inspectors

In blockchains using PoW, miners are like construction workers and building inspectors. They put in the effort to build new structures (blocks) and ensure they meet all the city’s codes and standards (blockchain rules). Once approved, these new buildings become part of the city’s landscape (blockchain ledger).

Cryptography as Security Systems

Cryptography in blockchain ensures data is secure and tamper-proof. This is similar to the locks, security cameras, and alarm systems that protect buildings and residents in the city. Each person has keys (private keys) to access their home, ensuring only authorized access.