what-is-blockchain-beginner-guide
If you've heard terms like Bitcoin or Web3, you've met "blockchain." But for developers, it’s best understood as a distributed, append-only ledger.
🔹 The Logic
A blockchain is a linear sequence of blocks. Each block contains:
Data: Usually a list of transactions.
Timestamp: When the block was created.
Hash: A unique digital fingerprint.
Previous Hash: The link that creates the "chain."
🔹 Why it’s different from a spreadsheet
Unlike a Google Sheet, blockchain is Immutable (cannot be changed) and Decentralized (no single owner). Once a block is added, changing it would require re-calculating every subsequent block across thousands of computers.
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