Crypto Trading 101: What is Block Chain

In the journey of CryptoTrading 101, it is crucial to understand the fundamental of "Crypto Terminology", we will understand what is Block Chain in simple Term.

What is Blockchain?

I want you to imagine when you are BUY USD$5000 Gucci bag in CHINA. How do you know its real thing? You can either buy at Hotel shopping gallery or Duty-Free Shop,
how do you ensure the Bag is REAL?
Or if you are going to invest in a multi-million art, what is the reliable system to make sure its authenticity.

The blockchain is the way for you to make sure internet services, a single source of truth, a unchangeable fact recorded of
Ledger.

"A Blockchain is a constantly growing ledger that keeps a permanent record of all the transactions that have taken place, in a secured, chronological and immutable way".

(1) Ledger: Track all the transactions in permanently secured fashion.

(2)Constantly growing.

(3) Immutable, once something, records has been added, it can not be altered or change the records.

Quiz:

-Blockchains keep record exclusively in alphabetic order?
True/False

-Records on a Blockchain can be modified at any moment?
True/False