Understanding Blockchain Technology and How It Actually Works
A blockchain is a distributed digital ledger where transactions are grouped into blocks and linked together cryptographically. Users often compare it to a shared spreadsheet where everyone has a copy and agrees on the contents. This ensures no single entity controls the records. Computers on the network verify these transactions by solving complex puzzles. Once a block is verified, it is added to the chain and everyone updates their copy. While the records are highly secure, it is important to remember that these systems are inefficient databases by design, trading speed for security.
How Cryptography and DLT Explain Bitcoin's Purpose
Studying cryptography and distributed ledger technology clarifies how Bitcoin provides security, decentralization, and censorship resistance. Cryptography secures transactions through math like SHA-256, making the protocol resistant to hacking and giving users full control through private keys. Distributed ledger technology ensures Bitcoin operates without central authority, keeping a shared, unchangeable record that network consensus validates.