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

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!

GNOSIS - ONE OF THE FIRST FULL DAPPS

3 SIMPLE TUTORIAL DAPPS (1/3) TIC TAC TOE- tic tac toe on the blockchain

- small „test framework“ for decentralized decision making contracts

(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

(3/3) WRITE OR DIEStill 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“

OVERVIEW OF EXISTING DAPPS - DAPPS.ETHERCASTS.COM

Virtual networks (testrpc)

THE DAPP STACK

Ethereum -testnet

Ethereum

Contract StatesEVM Contract

Byte Code

Serpent

Solidity

DAPP - UI

RPC - interface (web3)

SOLIDITY ONLINE COMPILER

Virtual networks (testrpc)

SOLIDITY ONLINE COMPILER

Ethereum -testnet

Ethereum

Contract StatesEVM Contract

Byte Code

Serpent

Solidity

DAPP - UI

RPC - interface (web3)

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 • …

TRUFFLE

Virtual networks (testrpc)Ethereum -testnet

Ethereum

Contract StatesEVM Contract

Byte Code

Serpent

Solidity

DAPP - UI

RPC - interface (web3)

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

ETHER.CAMPMost sophisticated blockchain explorer

ETHER.CAMP

Virtual networks (testrpc)Ethereum -testnet

Ethereum

Contract StatesEVM Contract

Byte Code

Serpent

Solidity

DAPP - UI

RPC - interface (web3)

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

VISUAL STUDIO (SOLIDITY SUPPORT)

DIFFERENT MODELS TO CONNECT DAPP TO ETH- MIST - GETH - RPC - Light - wallet

- signing in the browser - connect to any RPC-server (local/remote)

- metamask - …

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