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A public key is a cryptographic code that you can share openly and is used to receive funds or verify signatures. It is part of an asymmetric key pair, which also includes a private key that must be kept secret. **How it works** 1. **Key pair generation** – When you create a wallet, the software generates a private key (a random 256‑bit number). From this private key, a corresponding public key is mathematically derived. 2. **Address creation** – The public key is usually hashed (e.g., with SH

Proof of Work (PoW) is a consensus mechanism used by many blockchain networks—most famously Bitcoin—to secure the ledger and achieve distributed agreement on the order of transactions. ### How PoW Works 1. **Mining Puzzle** – Miners compete to solve a computational puzzle. The puzzle requires repeatedly hashing block data (including a nonce) until the resulting hash is lower than a target difficulty value. 2. **Proof of Work** – The successful hash serves as a *proof* that the miner expended a