The town only accepted a new block if the majority agreed the math was correct. The Result
In a bustling digital city called Ledgerville, every citizen carried a notebook. However, there was a problem: people often "erased" their debts or added fake money to their pages when no one was looking. The Basics of Blockchain
Before a block could be added to the wall, it had to include a "fingerprint" of the previous block. This linked them together. If someone tried to change a single letter in an old block, the fingerprint would change, and the entire chain would visibly break. The Network The town only accepted a new block if