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What is Blockchain?

A record keeping system
Trust
Decentralization
Trustless environment

How does Blockchain work?

Announcements
Blocks
Nodes
Chaining
Verification
Consensus
Scalability
Privacy
Crypto Hashing
Digital Fingerprinting
PoW vs PoS

Types of Blockchains

Public vs Private
Open vs closed
Smart Contracts
Blockchain as History
Tokens / Coins
Gas

How is Blockchain different from what we have today?

Decentralized
Peer-to-peer architecture
Software vs Firmware
Database vs Blockchain
Distributed database or other technology?
Data Sovereignty
Group Consensus

What are Use Cases for Blockchain?

Use Case Examples
 Currency
 Banking Services
 Voting
 Medical Records
 Supply Chain / Value Chain
 Content Distribution
 Verification of Software Updates (cars, planes, trains, etc)
 Law Enforcement
 Title and Ownership Records
 Social Media and Online Credibility
 Fractional asset ownership
 Cable Television billing
High fault tolerance
DDoS-proof
Public or Private Blockchain?
Who are the participants?

What does a Blockchain app look like?

DApp
Resembles typical full stack web application
Any internal state changes and all transactions are written to the blockchain
Node.js
IDE
Public Blockchain visibility
Private Blockchain solutions
Oracles

How do I design a Blockchain app?

What does this solution need to let users do?
Will the proposed solution reduce or remove the problems and pain points currently felt by users?
What should this solution prevent users from doing?
Do you need a solution ready for heavy use on day 1?
Is your solution idea enhanced by the use of Blockchain? Does the use of Blockchain create a better end-user experience? If so, how?
Has your business developed custom software solutions before?
What level of support are you going to need?
How big is the developer community?
Does your vision of the future align with the project or platform’s vision of the future?
Does the platform aim to make new and significant contributions to the development space, or is it an efficiency / cost play?
Should the solution be a public or private Blockchain?
Should the solution be an open or closed Blockchain?
Create a plan for contract updates and changes!
Hybrid solutions
Monetary exchanges?

How do I develop a Blockchain app?

AGILE approach pre-release
Define guiding principles up front
Software vs Firmware
Announcements, not transactions!
Classes, not contracts
Link contracts to share functions
Use calling contracts to keep contract address the same
Hyperledger vs Ethereum
CONSIDER No of Users * Avg No of Transactions (state changes) per User
Should a Blockless solution be applied?
Performance
Security
Anonymity
Security
Monolithic vs Modular
Sandwich complexity model

How do I test a Blockchain app?

Recommend 5x to 10x traditional application testing time
SECURITY is #1!
Networks (Ethereum)

We provide instructor-led in three modalities:

Instructors at classroom locations globally
Instructors Onsite at your location
Via WebEx led by an Instructor with live labs

Note: If you have 3 or more students we can come onsite to your location.
This training is an emerging tech; we reserve the right to change the content of the class.