Overview
Syllabus
Intro
Transaction order and state
In a centralized system
In a distributed and decentralized database
How do you reach consensus?
Various implementations of these concepts
Different instances of the same implementation
Why do you need a crypto-currency?
It started off as a currency
A payment transaction
A generic transaction
A generic blockchain
Everywhere there is a registry of andered transactions nobody should be able to tamper with
Each transaction involves business logic
In a blockchain, business processes are coded into smart contracts
A distributed application Dapa is a set of smart contracts with a user interface
Blockchain = design pattern
Pay-to-participate
Transaction confirmation times are long
System evolution is slow
You need a decision model
A few pieces of advice
Taught by
Devoxx