Blockchain technology is a distributed ledger system
where each transaction is verified across multiple
computers in a secure way, making it impossible to hack
or change.
It works by creating a continuous chain of blocks, each
containing a record of the previous transaction.
The blockchain is secured via a consensus mechanism known
as “mining,” where the nodes of the network are
incentivized to validate transactions and create new
blocks.
This makes it virtually impossible for anyone to tamper
with the data stored on the blockchain, or to make
unauthorized changes. Also, due to its distributed
nature, there is no single point of failure.
That means if one node goes down, the other nodes will
continue to operate without interruption.