📊 How Blocks Store Data Securely
Learn how blockchain uses cryptographic hashing to create an immutable data structure
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0 / 5 completed🔗 How Blocks Link Together
Blocks don't exist in isolation. Each block references the previous block's hash, creating an unbreakable chain. Let's see this in action.
🔍 Interactive Chain Explorer
Block #1
Hash:00000a5f...
Prev Hash:00000912...
TX: Alice → Bob (2 BTC)
Block #2
Hash:00000b3c...
Prev Hash:00000a5f...
TX: Bob → Charlie (1 BTC)
Block #3
Hash:00000c7d...
Prev Hash:00000b3c...
TX: Charlie → David (0.5 BTC)
🔐 Why This Matters
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Tamper-Proof: You can't change historical blocks without breaking the entire chain
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Transparent Verification: Anyone can verify the chain's integrity by checking hash links
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Chronological Order: The chain maintains a perfect timeline of all transactions
📊 Block Anatomy Summary
Inside a Block
- • Block Number (height)
- • Timestamp
- • Transaction list
- • Previous block hash
- • Nonce (for mining)
- • Merkle root
Block Properties
- • Immutable once added
- • Cryptographically linked
- • Publicly verifiable
- • Sequential ordering
- • Distributed copies
- • Consensus validated