⛓️ Creating an Unbreakable Digital Chain
Learn how blocks link together to form an immutable, tamper-proof chain
Your Progress
0 / 5 completed⛓️ How Blocks Chain Together
A blockchain is more than just blocks of data - it's a chain where each block is cryptographically linked to the one before it, creating an unbreakable sequence.
🎯 Core Concept
Think of a blockchain like a chain of train cars. Each car (block) is connected to the previous one with a special lock (hash). If you try to detach or modify any car, the entire chain breaks and everyone knows something's wrong.
🔍 Interactive Chain Explorer
Click on a block to see how it links to the previous one:
Cryptographic Linking
Each block stores the previous block's hash, creating a mathematical link that's impossible to break without detection.
Tamper-Proof
Change any data in a historical block, and its hash changes, breaking the link with the next block.
Chronological Order
The chain creates a permanent timeline - you can't rearrange or insert blocks without breaking the links.
Transparent Verification
Anyone can verify the chain's integrity by checking if each block's previous hash matches the actual hash of the previous block.
💡 Real-World Analogy
Imagine a notary stamping documents with a unique seal that includes the previous document's seal number. To forge any document in the middle, you'd need to:
- Change the document (impossible - the notary already stamped it)
- Get a new matching seal (impossible - seals are unique)
- Update ALL subsequent documents (detected immediately)
This is exactly how blockchain prevents tampering - change one block, break the entire chain.