Temario

What is Blockchain?

A record of keeping systems
Trust
Decentralization
Trustless environment
How does Blockchain work?

Announcements
Blocks
Nodes
Chaining
Verification
Consensus
Scalability
Privacy
Crypto hashing
Digital fingerprinting
PoW versus PoS
Blockchain Types

Public versus private
Open versus closed
Smart contracts
Blockchain as history
Tokens/coins
Gas
How is Blockchain different from what we have today?

Decentralization
Peer-to-peer architecture
Software versus firmware
Database versus Blockchain
Distributed database or other technology?
Data sovereignty
Group consensus
Blockchain Use Cases

Use case examples
Currency
Banking
Voting
Medical records
Supply chain/value chain
Content distribution
Verification of software updates
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 the solution need to let users do?
Will the proposed solution reduce or remove the problems and pain points 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 and 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 versus firmware
Announcements, not transactions!
Classes, not contracts
Link contracts to share functions
Use calling contracts to keep contract addresses the same
Hyperledger versus Ethereum
Consider the number of users and number of transactions per user
Should a blockless solution be applied?
Performance
Security
Anonymity
Monolithic versus modular
Sandwich complexity model
How do I test a Blockchain app?

Recommendations
Security
Networks (Ethereum)