BLOCKCHAIN
is a decentralized,distributed digital leger that record transaction across many computers. its is also a database of transcation

HOW BLOCKCHAIN WORKS
-someone request a transaction
-Transaction is complete and permanent
-Network validates the transaction usingalgorithms
-Block is added to the existing blockchain
Transaction is broadcast to a network of computers(nodes).

"nodes"-multiple server
"block"-bunch of transaction

KEY BLOCKCHAIN CONCEPTS
-Decentralization
-transparency
-immutability
-consensus
-crytograhy

WEB 3
is the next evolution of the internet that focuses on decentralization, blockchain technology, and user owners

-Aim to reduce reliance of big tech companies
-built on blockchain technology

Web1-Web2-Web3
web-1
-read only static websites
-one way infomation flow

web-2
-interactive, social platfrom
-user-generated content

web-3
-user-owned internet
-Decentralized application