Blockchain Basics

Delegated Proof of Stake (DPoS) A variation of Proof of Stake where token holders elect delegates (validators). TL;DR: Token holders vote for a small set of delegates who validate blocks. Fast, efficient, but introduces political risks. DPoS trades a broad validator set for a rotating committee elected by stake; performance rises, but the system must […]

Consensus Mechanisms: Proof of Work vs Proof of Stake How networks agree on truth without a central authority, energy vs stake, miners vs validators. TL;DR: Proof of Work (PoW): miners burn electricity to secure the chain. Attacking requires massive energy & hardware. Proof of Stake (PoS): validators lock tokens (“stake”) to earn rewards. Attacking risks

Gas Fees Explained: Why Transactions Cost Money Estimated read time: 10–12 minutes | Level: Beginner | Topic: Blockchain Basics TL;DR: Gas fees exist to price scarce block space and pay the people (validators) who include and verify transactions. On Ethereum since EIP-1559, you set a max fee and a priority tip; the network burns the

Public & Private Keys Explained (Wallet Addresses, Seed Phrases, Signatures) Beginner → Intermediate Wallets • ~12 min read • Updated: 08/08/2025 TL;DR: Your private key is a secret number that proves control over an account. Its matching public key lets others verify your signatures and derive your address (safe to share). A 12–24 word seed

What is a Blockchain? (Blocks, Hashes, Consensus) Beginner Blockchain Basics • ~11 min read • Updated: 08/08/2025 TL;DR: A blockchain is a shared database that many independent computers (nodes) keep in sync. Transactions are batched into blocks. Each block includes a hash (a tamper-evident fingerprint) and a pointer to the previous block’s hash, forming a