Ethereum technology and will also show how to make smart contracts within the Ethereum. The presentation will include a little bit of history about the blockchain, advice on how to create an environment to test and deploy your own smart contracts using Truffle, and a breakdown of the tools needed to leverage Ethereum beyond cryptocurrency.

1. ETHEREUM
THEORY AND PRACTICE

2. EDUARDO
NUNES PEREIRA
SOFTWARE ENGINEER

4. HISTORY
CRYPTOCOIN

5. THEORY • HISTORY • CRYPTOCOIN
E-CASH (1980 - 1990)
▸ Conceived by David Chaum as an anonymous
cryptographic electronic money or electronic cash system
in 1983.
▸ Cryptography
▸ Centralized

6. THEORY • HISTORY • CRYPTOCOIN
B-MONEY (1998)
▸ Wei Dai is a computer engineer and cypherpunk best
known as creator of b-money and the developer of the
Crypto++ library.
▸ Creating money through solving computational puzzles
▸ Decentralized consensus

7. THEORY • HISTORY • CRYPTOCOIN
BITCOIN (2009)
▸ Created by Satoshi Nakomoto.
▸ Public / private key
▸ Distributed consensus
▸ Proof of work (Hashcash)

8. THEORY • HISTORY • CRYPTOCOIN
ETHEREUM (2015)
▸ Ethereum was initially proposed in late 2013 by Vitalik
Buterin, a cryptocurrency researcher and programmer.
▸ Is a currency, like Bitcoin
▸ Built-in virtual machine and programming language
▸ Alternative protocol for building decentralized apps
▸ Smart contracts

9. IF AT FIRST AN
IDEA DOES NOT
SOUND ABSURD,
THEN THERE IS
NO HOPE FOR IT
Albert Einstein

10. BLOCKCHAIN
THE NEXT INTERNET REVOLUTION

11. THEORY • THE NEXT REVOLUTION • BLOCKCHAIN
WHAT IS BLOCKCHAIN ?
▸ Simple, is a public and digital ledger or a public database
of transactions
▸ Distributed among computers on the internet
▸ Without a central authority
▸ Anyone can participate

12. BLOCKCHAIN
A TRANSACTION STEP BY STEP

28. SMART CONTRACTS
DISTRIBUTED COMPUTATION

29. THEORY • SMART CONTRACTS • HOW IT WORKS
HOW IT WORKS ?
▸ Ethereum Virtual Machine
▸ Global Computer
▸ Gas, “the fuel for the computation”
▸ It has a programming language

30. THEORY • SMART CONTRACTS • SOLIDITY
SOLIDITY
▸ Compile to Ethereum Virtual Machine
▸ Object oriented programming (OOP)
▸ C-Like and Javascript-Like
▸ Statically typed
▸ The official, but it’s not the only option

31. THEORY • SMART CONTRACTS • DAPPS
DAPPS (DISTRIBUTED APPLICATIONS)
▸ Frontend to Smart Contracts
▸ Can be deployed anywhere
▸ Use the blockchain as the database
▸ The next generation of apps

32. THEORY • SMART CONTRACTS • TRUFFLE
TRUFFLE
▸ Uses NodeJS (Javascript)
▸ Compile and deploy Smart Contracts
▸ Unit tests ready
▸ Easy Dapp environment

33. SMART CONTRACTS
THE FIRST DAPP STEP BY STEP

34. THE SCIENCE OF
TODAY IS THE
TECHNOLOGY OF
TOMORROW
Edward Teller

35. THANK YOU
EDUARDO NUNES PEREIRA
eduardonunesp@gmail.com