Agenda 18:00 Pre-mingle 18:30 Introduction to the Blockchain and - - PowerPoint PPT Presentation

• 18:00 Pre-mingle
• 18:30 Introduction to the Blockchain and Ethereum

Thomas Backlund - Founder Blockie

• 19:10 Short break
• 19:15 Creating Lendroid - an Ethereum-based app

Vignesh M. Sundaram - Founder Lendroid

• 19:40 Community Announcements
• 20:00 Open Discussion

Agenda

Someone got in early...

Ethereum: we REALLY need to talk about this

Thomas Backlund - @BlockieOrg

Introduction

• Founded Blockie.org in 2013
• From the forest...
• More at thomasbacklund.com

• Blockchain solves the “double spending” problem (Nobel Prize?)
• If the file “one-dollar.txt” is worth $1, what prevents me from spending it more than
• nce?
• Blockchain is a growing list of “truths” maintaining a consensus around who-owns-what
• Many computers make up the network for a blockchain
• Where is my money?

Blockchain (the core of Bitcoin and Ethereum)

Where is my money?

• In everybody's pockets, but cryptography ensures that only you can spend it
• Asymmetric cryptography - public/private key pairs & Proof-of-work
• Private key -> Public key → Address → Account
• Private key unlocks account to transfer funds
• No matter what Wallet or Exchange, it’s your private keys which matters!
• Private key stored as is, on paper, on USB, or as memorable mnemonic, 12 words:

○ happy pool frog recall good old good days in the sunny pond

Enter Ethereum

• A “new” blockchain implementation (Currency: Ether)
• Not just money. The Ethereum Virtual Machine (EVM) can:

○ run code and store data ○ transfer funds on certain events/triggers ○ ^ Smart Contracts

• Transformation is triggered by accounts sending funds to other accounts (POKE).
• Accounts being users (you) or other contracts.

• A contract is represented by an address, and is an account
• A contract is an “internal” account
• A user account is “external”. Externally Owned Account (EOA)
• A contract is triggered to run when anyone sends funds to it
• Contracts are public code, viewable by anyone
• Results from running contracts are stored in new blocks on the chain
• Contracts can’t interact with the outside world directly

Enter Ethereum - Smart contracts

• How can a contract know the result of a soccer game to fulfill a bet?
• Oracle: authenticated/trusted source to take decisions and bridge the gap to the outside

world

• A contract is created, then waits for an Oracle to message it when the outside world trigger

has happened (which is done by sending a (small) transaction to the contract)

Enter Ethereum - Oracles

• Create your own currencies/tokens
• Token sales

○ Crowdfunding for startups ○ Initial Coin Offering (ICO ~ IPO)

• Decentralized Autonomous Organizations

○ A set of smart contracts which builds a democracy on the blockchain

Enter Ethereum - Token Sales & DAOs

Enter Ethereum - Token Sales, ICOs

• “The DAO” - $150M → Hard fork
• Golem - $8,6M → “AirBnB for computers” - Decentralized Cloud
• uPort - N/A → Identity
• Bancor - $153M → Smart tokens, Liquidity
• Gnosis - $12M → Prediction market
• Wings.ai - $2M → Creating DAOs
• Aragon - $24M → DAOs with digital jurisdiction
• Ethlance - N/A → Job market

• Blockchain + The Ethereum Virtual Machine
• Ether is sent between accounts in the network, operations cost Gas (Ether).
• Contracts are “internal” accounts, your account is an Externally Owned Account
• Contracts contain code, which is run when they receive funds
• A contract is created by sending funds (and a payload) to “nobody”
• Trusted Oracles can trigger contracts, providing them with outside world data
• You can create your own currencies/tokens

Enter Ethereum - Summary

Past, Present and Future?

Web Changes Features Decentralized Centralized 1 New protocols, IMAP, HTTP, etc Servers, Online 24/7 Yes 2 New services: Google, Facebook, Uber, AirBnB, et al. Cloud Yes 3 New protocols: Blockchain, Ethereum, etc. Digital assets, tokens Yes 4 New services: ?? Intelligence ? Yes?

• Space.sh - The Space Shell - for Web3 to leverage Web2

○ Smart contracts automate on the blockchain ○ The Space Shell automate outside the blockchain

• BecomeAThing

○ An Ethereum-based project for creating a Digital Unified Persona (DUP)

Blockie.org - Our two satoshis for a Web3

Thank You!

• Check out the Space.sh at space.sh
• Subscribe to Blockie.org newsletter and @BlockieOrg on Twitter
• Twitter: @ThomasBacklund
• Email: thomas@blockie.org