So far, weāve talked a lot about blocks.
Today, letās look inside one block simply.
A block is not mysterious.
Itās just a container of information.
A block usually contains:
š§¾ 1. Data
This is the information being recorded
(for example: transactions or records).
ā±ļø 2. Time information
Each block knows when it was created.
This helps keep everything in order.
š 3. Link to the previous block
Every block carries a reference to the one before it.
Thatās what forms the chain.
š 4. A digital fingerprint (hash)
This fingerprint represents the blockās contents.
If data changes, the fingerprint changes too.
Because blocks are linked and fingerprinted,
changing one block would require changing all blocks after it.
which is practically impossible.
Thatās why blockchain records are so hard to tamper with.
Point to Ponder:
If every record carried its own fingerprint, how easy would cheating be?