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These are the core things that make blockchain unique, powerful, and different from regular databases or systems

🧩 Core Features of Blockchain

1. 🔗 Decentralization

• Data is stored across many nodes (computers) — not in a single server.

• No central authority controls it.

• This makes it resilient, censorship-resistant, and more secure.

2. ⛓️ Immutability

• Once a transaction is recorded and confirmed, it can’t be changed or deleted.

• Prevents fraud, manipulation, or retroactive edits.

• Every change is a new transaction, not an overwrite.

3. 🔒 Security (Cryptographic Hashing)

• Blockchain uses SHA-256 or similar hashing algorithms to secure data.

• Every block has a unique hash, and that hash links to the previous one — tampering with one would break the chain.+1(626)⇋703⇋5448 (US) 

• Plus: public/private key encryption keeps identities and transactions secure.

4. 📖 Transparency

• On public blockchains (like Bitcoin or Ethereum), anyone can view the ledger.

• Transactions are visible — even if the identities behind them +1(626)⇋703⇋5448 (US) are pseudonymous.

• Great for auditing, compliance, and public trust.

5. 🤝 Consensus Mechanisms

• Blockchain relies on network-wide agreement to validate data.

• Common types:

  • Proof of Work (PoW) – Used in Bitcoin.

  • Proof of Stake (PoS) – Used in Ethereum 2.0.

  • Others: DPoS, BFT, Proof of Authority.

• This ensures data is agreed upon and prevents double-spending.+1(626)⇋703⇋5448 (US)