BlockChain 101

1. NORTH ATLANTA
BLOCKCHAIN
DEVELOPMENT
GROUP
MARCH 13TH 2018

2. AGENDA
• ABOUT THE MEETUP
• HOUSEKEEPING
• INTRODUCTIONS
• BLOCKCHAIN 101
• INDUSTRY USE CASES DISCUSSION
• NEXT MEETUP IDEAS
• WRAP UP

3. WHY ANOTHER MEETUP?
•OUR FOCUS
•HOW’S IT DIFFERENT
•WHAT WE CAN ACHIEVE

4. HOUSEKEEPING
•ORGANIZING TEAM
•EVENT LOCATION HOME
•FUNDING

5. BUSINESS NETWORKS, MARKETS, ASSETS
Business Networks
 Business networks have participants (customers,
suppliers, banks, partners), cross-geography and
regulatory boundaries
 Flow of goods, services across business networks
 E.g. Retail markets, Car Dealerships, Mortgage Finance
Transfer of Assets
 Tangible (House, Car, Land) and Intangible Assets
(mortgage, bonds, digital) transfer across business networks
 Participants in a business network either transfer or own or
lease assets to other participants.
 Transfer of assets are governed by Regulatory body or
intermediaries.

6. WHAT IS BLOCKCHAIN?
•A decentralized or distributed ledger that verifies transactions
•These ledgers are shared and synchronized among participants of the
blockchain network
•All participants in the network have a copy of the blockchain
•Blockchain can be Public or Permissioned

7. TYPES OF BLOCKCHAIN
Public (BitCoin, Ethereum, NEO, IOTA)
•Analogous to the global internet, open to anyone
•No privacy but fully immutable
•No single point of failure
Permissioned (Hyperledger, Quorum)
•Analogous to corporate intranets, permissioned access
•Provides privacy at cost of security
•Easier to scale

8. BLOCK & CONSENSUS
•Blockchain consist of a chain of "blocks"
•These blocks store transaction data that
are in a specific order
•Transactions can represent money, assets,
information, etc.
•Each new block contains a summary or
"hash" of the previous block
•Blocks are validated by participants in the
network through computational power
•Hashes link the next block
•Conflicting transactions within a block
create a different hash
•Different hashes are kicked off the main
chain by validators through consensus

9. WHAT DOES BLOCKCHAIN SOLVE?
Double-spend problem is solved in a decentralized way
•Opens the door for P2P transactions and distributed asset
transfer systems
Transactions are immutable
•Guarantees that transaction data can't change once submitted
to the blockchain, increasing security of data
Transactions are verifiable
•Anyone in the network can validate a transaction which
prevents fraud

10. A SIMPLE USE CASE W/O BLOCKCHAIN

11. CAR LEASING USING BLOCKCHAIN

12. BLOCKCHAIN PLATFORMS
World of
Cryptocurrency
• E.g. BitCoin, ETH, EOS
• PoW (Public), PoS (Permissioned
Public), PoT
• Miners get rewarded for solving the
puzzle and creating the
block/appending.
Blockchain for Business
• Consortium Development
• DAPPS Development
• Permissioned/Private Networks
• Hyperledger (Fabric, Sawtooth, Iroha)
• Ethereum
• More…..

13. BLOCKCHAIN HYPE CYCLE / REALITY
• POC STAGES
• SCALABILITY AND DATA
PRIVACY CHALLENGES
• NOT A SOLUTION FOR ALL
WORLD PROBLEMS
• EXPENSIVE
• LACK OF
DEVELOPERS/COMMUNITY

14. DAPPS - ARCHITECTURE
Application: An engagement layer
(Node.js, Java, Mobility, BPM)
Smart Contract: Chain Code (Golang, PHP, Java, C++)
APIs: Connectivity between ledgers and applications
Blockchain: A public/private ledger

15. MEMBER EXPERIENCES WITH BLOCKCHAIN
INDUSTRY USE CASES

16. NEXT MEETUP TOPIC IDEAS
….HYPERLEDGER TECH DEEP DIVE
….ETHEREUM TECH DEEP DIVE
…..COIN/TOKEN FOR MEETUP GROUP

17. THANK YOU