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Blockchain Basics News

Understand the technology powering cryptocurrencies. Learn how blockchain works, the difference between proof-of-work and proof-of-stake, what makes networks secure, and how smart contracts enable decentralized applications.

Learn All Crypto Topics | Phemex Blog - Phemex
Blockchain Basics1 min
Learn All Crypto Topics | Phemex Blog - Phemex

Explore Phemex's comprehensive blog for insights on cryptocurrency topics, designed for both beginners and experienced investors in the evolving crypto landscap

Mar 29, 2026

Blockchain Basics FAQ

Blockchain is a distributed digital ledger that records transactions across many computers. Each block contains transaction data, a timestamp, and a link to the previous block, creating an immutable chain. This makes it nearly impossible to alter historical records.
Proof-of-work (PoW) requires miners to solve complex puzzles using computing power (Bitcoin uses this). Proof-of-stake (PoS) selects validators based on how much crypto they 'stake' as collateral (Ethereum uses this). PoS is more energy-efficient but has different security tradeoffs.
Blockchain security comes from: decentralization (no single point of failure), cryptographic hashing (linking blocks), consensus mechanisms (requiring network agreement), and immutability (extremely difficult to alter past records). Attacking a major blockchain would require enormous resources.
Nodes are computers that maintain a copy of the blockchain and validate transactions. Full nodes store the entire blockchain history, while light nodes store only essential data. More nodes mean greater decentralization and network resilience.
Blockchain Basics News - Cryptocurrency Updates & Analysis | CoinInformer