This document provides an overview of Ethereum and resources for Ethereum developers. It defines Ethereum as a decentralized platform that runs smart contracts without downtime, censorship or third party interference. It describes the Ethereum workflow and improvement process through Ethereum Improvement Proposals. It lists key Ethereum resources like the Ethereum foundation, Gitter rooms, Devcon conferences, MetaMask wallet, Etherscan block explorer, and the types of decentralized applications that can be built on Ethereum.

1. Ethereum for Developers

2. Kenneth Hu
• Vice President/Blockchain Developer at BlockPlus Inc
• Blockchain/Ethereum trainer at IBS and APTTECK Inc
• The founder of Blockchain&Dapps meetup
• The founder of Singapore IOTA meetup
• Email : Kenneth@Blockplus.com

3. •https://sg.bytepay.com/

5. Ethereum
• This is how Ethereum’s website defines itself:
• “Ethereum is a decentralized platform that runs smart contracts:
applications that run exactly as programmed without any
possibility of downtime, censorship, fraud or third party
interference. These apps run on a custom built blockchain, an
enormously powerful shared global infrastructure that can move
value around and represent the ownership of property.”

6. Ethereum WorkFlow
• Research • Specification
• Prototyping
Implementati
on
• Client side
Implementati
on
Eth 2.0 Eth 1.0

7. Ethereum Improvement Proposals (EIPs)
• Ethereum Improvement Proposals (EIPs) describe standards for the
Ethereum platform, including core protocol specifications, client APIs,
and contract standards.

8. EIP Types
• Standard Track
• - Describes any change that affects most or all Ethereum implementations, such as a change
to the network protocol
• Core
• Improvements requiring a consensus fork (e.g. EIP5, EIP101), as well as changes that are not
necessarily consensus critical but may be relevant to “core dev” discussions
• Networking
• Includes improvements around devp2p (EIP8) and Light Ethereum Subprotocol, as well as
proposed improvements to network protocol specifications of whisper and swarm.
• Interface
• Includes improvements around client API/RPC specifications and standards, and also certain
language-level standards like method names (EIP6) and contract ABIs.

9. EIP Types
• ERC (Ethereum requests for comments)
• Application-level standards and conventions, including contract standards such as
token standards (ERC20), name registries (ERC137), URI schemes (ERC681),
library/package formats (EIP190), and wallet formats (EIP85).
• Informational
• Describes a Ethereum design issue, or provides general guidelines or information
to the Ethereum community, but does not propose a new feature.
• META
• Describes a process surrounding Ethereum or proposes a change to (or an event
in) a process. Process EIPs are like Standards Track EIPs but apply to areas other
than the Ethereum protocol itself.

10. Github - https://github.com/ethereum

11. Gitter Rooms
• go-ethereum
• cpp-ethereum
• web3.js
• Solidity
• serpent
• mist
• light-client
• research
• governance
• whisper
• swarm
• EIPs
• ethereumjs-lib
• devp2p

12. Ethereum Foundation- Ethereum Core Devs Meeting
• https://www.youtube.com/channel/UCNOfzGXD_C9YMYmnefmPH0g
Ethereum Core Devs Meeting

13. Ethereum
Ethereum Core Devs Meeting

14. Ethereum Devcon - Ethereum Foundation
• h

15. 2179 Projects built on Ethereum
• State of the Dapps : https://www.stateofthedapps.com/

16. MetaMask
• https://metamask.io/

17. MetaMask

19. • I made ERC721 token for PINC Pte. Ltd
• Token : https://bit.ly/2Dv09GX
• Etherscan : https://bit.ly/2Fsg0IZ

21. http://www.kennethhu.net/example/ethereum/index.html

22. Ethereum network
KOVANRINKEBY
ROPSTEN
Main network

23. Etherscan

24. Ethereum node
• Total : 13057 nodes
• https://www.ethernodes.o
rg/network/1

25. Decentralized Applications architecture
• Pure DApp:
IPFS/Swarm/AWS/GCE
Client
(Web, mobile)
Miner/smart contract
Ethereum Network

26. Decentralized Applications architecture
Server API
• Sibling DApp:
Miner/Smart contract
Ethereum Network
Client
(Web, mobile)
IPFS/Swarm/AWS/GCE Internet

27. Decentralized Applications architecture
• Protected DApp:
Server API
Miner/smart contract
Ethereum Network
Client
(Web, mobile)
IPFS/Swarm/AWS/GCE
Internet

28. CRITICAL SKILLS FOR A SOLIDITY DEVELOPER
• Knowledge of web technologies
• For example, Ethereum nodes interact with uses via JSON RPC protocol
• Constant striving to learn new skills, new programming languages, new tech
• COBOL specialists are unlikely to be a good fi, despite some running similarities.
• Knowledge of Javascript
• Most smart contracts are tested in it. The Truffle Suite environment for smart contract
development runs on NodeJS
• Understanding of cryptography, game theory and blockchain in general
• Revealing hash values when it is not necessary is a common newbie mistake
• Attention to detail
• Smart contracts are usually only deployed once – an error can nullify a few million dollars
of capitallization

29. How To Become A “High Valued” Ethereum Developer
• What is Blockchain?
• What is Ethereum?
• How does Ethereum mining work?
• What are Smart Contracts?
• What is the Ethereum Virtual Machine?
• What are Ether and Gas?
• What is solidity?
• Dapps and ICOs.
• How does Ethereum wallet work?

30. What Ethereum developer can do
• Private Chain
• ICO – ERC20
• Crypto Exchange
• Crytpo Wallet
• Stable Token /Non-fungible Tokens
• The Security Token Offering
• Crypto Exchange
• The Gaming Industry
DappRadar : https://dappradar.com/
2017 / 2018 2019

32. Singapore Blockchain ecosystem
Incubator/
Composable Ecosystems
Coworking spaceLocal company

33. Singapore Blockchain ecosystem
Media Crypto Exchange
Education/
University

34. How active is Blockchain in SG?
• Blockchain / Forums / Meetups / Conference / TradeShow/ EventBrite
• Avg 2-3 projects presentations evening
• Avg 14-21x projects per week
• Min 56-84x projects per month

35. Ethereum resource in Singapore
• Meetup :
• ETHEREUM SINGAPORE
• BLOCKCHAIN&DAPPS
• ALL WHO LIKE CRYPTOCURRENCY AND BLOCKCHAIN
• OPEN CLASS
• https://alphawallet.com/blockchain-decalogue/
• Zilliqa
• IBS

36. Blockchian&Dapps
• Telegram group for developer: http://bit.ly/2GcnE9x
• Telegram group for business : https://bit.ly/2on9JmN
• Facebook : https://www.facebook.com/groups/140517386608407
• Medium : https://medium.com/singapore-blockchain-dapps
• Youtube : https://www.youtube.com/channel/UCR9Y3p-
EeNM1ceQFFspU1JA

37. Blockchain&Dapps- workshop

38. Thank you for listening !!
• Telegram : @Kennethhutw Feedback
• https://t.me/Kennethhutw Composable token