What exactly is blockchain?

To put it simply, it's like a giant ledger that everyone keeps together.

In the past, we typically relied on one person or one institution to keep the accounts,

like banks or e-commerce platforms, where the ledger was only in their hands,

this is called "centralized accounting."

But blockchain is different,

it is decentralized —

everyone has an identical ledger in their hands,

every transaction is recorded synchronously by everyone, verified by each other, and no one can change it.

For example:

If someone buys something with Bitcoin, this transaction is like a "small package,"

it contains information about who the parties are, when it happened, how much was involved, etc.,

and then, this package will be bundled into a "block."

These blocks are linked together in chronological order,

it's like a chain — this is "blockchain."

Moreover, once these blocks are written into the chain, they are very hard to alter.

Because to change one block, all subsequent blocks have to be changed together,

and since everyone has a ledger, thinking about cheating? No way!

More importantly — it is transparent,

every participant in the network can see the entire process of the transaction,

this ensures: openness, fairness, and justice.

This is the magic of blockchain.

It's not just one person keeping the accounts; it's the whole world keeping accounts together.

Security, transparency, and immutability are the new foundations of trust for the future.