If no one controls blockchain,
a simple question arises:
How does it stay secure?
Blockchain security comes from three simple ideas:
🔒 1. Linking blocks
Each block is connected to the previous one.
Change one block → the whole chain breaks.
👀 2. Many copies
Blockchain data is stored on many computers.
There’s no single place to attack.
🧮 3. Verification before acceptance
New data is accepted only after agreement by the network.
So security doesn’t come from hiding data.
It comes from transparency and mathematics.
That’s why blockchain is hard to tamper with.
not because it’s secret, but because it’s provable.
Point to Ponder:
Is openness sometimes more secure than secrecy?