We have also described the term blockchain again in our
crypto glossary, but here it is elementary, hence the explanation here: The
blockchain is also referred to as "distributed ledger", as
"distributed ledger". Without this distributed ledger,
cryptocurrencies would not be possible. Since it is ultimately just code, digital
money is theoretically very easy to manipulate.
A hacker only needs to change a few numbers and suddenly he
would be rich. However, the blockchain records the balance and transactions of
the users in a forgery-proof and transparent manner. The blockchain is also
decentralized. It is distributed across various computers and servers, which
constantly exchange information with each other and agree on the current
blockchain version. This ensures that there is only one current version.