The first presentation of an ongoing series on how to build decentralized application (DAPPs) on top of the Ethereum blockchain.

1. SAN FRANCISCO
ETHEREUM
DEVELOPER
MEETUP
BUILDING DAPPS (1/3) - OVERVIEW OF THE MOST
USEFUL ETHEREUM DEVELOPER TOOLS

2. GOALS OF THE
MEETUP GROUP
- place to exchange experiences for active Ethereum
developers
- short term: a bunch of overview and tutorial talks
Lets create some DAPPs together!

3. GNOSIS - ONE OF THE
FIRST FULL DAPPS

4. 3 SIMPLE TUTORIAL
DAPPS (1/3) TIC TAC TOE
- tic tac toe on the blockchain
- small „test framework“ for decentralized decision making
contracts

5. (2/3) HODL ETH COIN
- decentralized coin that is basically free but still has some
scarcity
- lock x ETH for y days in a contract and create x*y HODL
coins
- have a look at https://github.com/ethereum/wiki/wiki/
Standardized_Contract_APIs

6. (3/3) WRITE OR DIE
Still haven’t written your thesis/ this blog post/ this doc/ …?
commit your self to do it.
Lock up x ETH - specify your goal („3 pages of my thesis“) -
send the link/hash to your writing to the contact
Oracle will decide wether you get the money back or whether
it will be destroyed/ sent to an „opponent“

7. OVERVIEW OF EXISTING DAPPS
- DAPPS.ETHERCASTS.COM

8. Virtual networks (testrpc)
THE DAPP STACK
Ethereum -testnet
Ethereum
Contract
States
EVM
Contract
Byte Code
Serpent
Solidity
DAPP - UI
RPC - interface (web3)

9. SOLIDITY ONLINE COMPILER

10. Virtual networks (testrpc)
SOLIDITY ONLINE COMPILER
Ethereum -testnet
Ethereum
Contract
States
EVM
Contract
Byte Code
Serpent
Solidity
DAPP - UI
RPC - interface (web3)

11. TRUFFLE - COMMAND LINE
DEVELOPMENT MANAGEMENT TOOL
• With 4 commands to your first DAPP
• Built-in automated compilation, library linking,
deployment and binary management.
• Automated contract testing with Mocha and
Chai.
• Configurable build pipeline with support for
custom build processes
• …

12. TRUFFLE
Virtual networks (testrpc)
Ethereum -testnet
Ethereum
Contract
States
EVM
Contract
Byte Code
Serpent
Solidity
DAPP - UI
RPC - interface (web3)

13. MIX - FULL DAPP IDE
• create virtual states
• debugging - step (forward and backward) through EVM
• …

14. ETHER.CAMP
Most sophisticated blockchain explorer

15. ETHER.CAMP
Virtual networks (testrpc)
Ethereum -testnet
Ethereum
Contract
States
EVM
Contract
Byte Code
Serpent
Solidity
DAPP - UI
RPC - interface (web3)

16. ETHEREUM STUDIO
• fully fledged web/cloud based IDE
• easy collaboration on contracts

17. VISUAL STUDIO
(SOLIDITY SUPPORT)

18. DIFFERENT MODELS TO
CONNECT DAPP TO ETH
- MIST
- GETH - RPC
- Light - wallet
- signing in the browser
- connect to any RPC-server (local/remote)
- metamask
- …

19. NEW YORK - BLOCKCHAIN
WORKSHOP - 4-5 ARILP
- ask me for up to 75% discount codes