Presented at: Open Source 101 - Columbia 2019 Presented by: Angeleen Wilson, Georgia Blockchain Coalition April 18th, 2019 Columbia, SC, USA

1. OPEN SOURCE 101
What’s up with dApps?

2. WHO AM I
DEFINITION by DESIGN
THE BLOCKCHAIN
DIFFERENT TYPES OF DAPPS
DAPPS IN ACTION
USES CASES
DAPP RESOURCE LINKS
AGENDA

3. ANGELEEN WILSON

4. • Open Source: Governed by autonomy and all changes must be
decided by the consensus, or a majority, of its users. Its code
should be available for scrutiny.
• Decentralized: Records of the application’s operation must be
stored on a public and decentralized blockchain to avoid
drawbacks of centralization.
• Incentivized: Validators of the blockchain should be incentivized
by rewarding them accordingly with cryptographic tokens.
• Protocol: The application community must agree on a
cryptographic algorithm to show proof of value.
• Bitcoin uses Proof of Work (PoW)
• Ethereum hybrid PoW/Proof of Stake (PoS)
Don’t have a central point of failure
Dapps connect users and providers directly.
WHAT’S UP WITH DAPPS?
DEFINITION

5. THE DESIGN
Client-server
Traditional - In the office environment, often data is held on servers, and wherever
you log in, you can access the data.
Peer-to-peer
In peer-to-peer models, it’s more like a gossip network where each peer has 100%
the data (or as close to it as possible), and updates are shared around.
WHAT’S UP WITH DAPPS?
DEFINITION

6. • Be completely open-source and operate autonomously with no
entity in charge of the majority of its currency;
• Have any protocol changes that are designed to make some overall
improvement approved by all its users;
• Cryptographically store all of its operation data and records in a
public blockchain;
• Use a bitcoin or a currency that is native to its blockchain system so
that it can be accessed for use and any future contributions to its
value from miners;
• Generate tokens, or currency, which follows a standard cryptographic
algorithm.
WHAT’S UP WITH DAPPS?
DEFINITION

7. Blockchain technology was first introduced in a whitepaper
entitled: “Bitcoin: A Peer-to-Peer Electronic Cash System,” by
Satoshi Nakamoto in 2008.
Bitcoin, the “Digital Gold” is the first cryptocurrency (digital
asset) that was created off of Blockchain.
What Bitcoin does as a value of currency is not as important as
how it works.
“Blockchain will do for trusted transactions
what the internet did for information”
~Ginni Rometty, IBM
WHAT’S UP WITH DAPPS?
THE BLOCKCHAIN

8. A blockchain system is a package which contains a normal database plus some
software that adds new rows, validates that new rows conform to pre-agreed
rules, and listens and broadcasts new rows to its peers across a network,
ensuring that all peers have the same data in their databases.
LEGOS - From the bag, you can take out different bricks and put
them together in different ways to create different results
FOR DEVELOPERS: Need to have some
basic knowledge of C++ and JavaScript.
 Digital Records can be stored = YOUR DATA
 Cryptocurrency - Digital assets = YOUR MONEY
 Smart contracts = YOUR AC
WHAT’S UP WITH DAPPS?
THE BLOCKCHAIN

9. Identity Management
Secure by EncryptionReal Time
Auto-sync every copy is almost
instantly the same
Peer 2 Peer Storage
Everyone
has a copy
Permanent
&
Tamper resistant
Nothing can be deleted
Self-ownership of data
Open Source
Everyone can
add to the database
WHAT’S UP WITH DAPPS?
THE BLOCKCHAIN

10. • Type I: dApps have their own blockchain. These are
know as Bitcoin, Litecoin, and all other “alt coins.”
• Type I
WHAT’S UP WITH DAPPS?
DIFFERENT TYPES OF DAPPS

11. • Type II: dapps use the blockchain of a Type I dapp,
are their own protocols, and have tokens to provide
the necessary functionality.
• This type is like a software program.
• Apps where money is involved (but also
requires another piece).
• In the first type of app, a user may need to
exchange ether as a way to settle a contract
with another user, using the network’s
distributed computer nodes as a way to
facilitate the distribution of this data.
• Type II
WHAT’S UP WITH DAPPS?
DIFFERENT TYPES OF DAPPS

12. • Type III
WHAT’S UP WITH DAPPS?
DIFFERENT TYPES OF DAPPS
• Type III leverage the protocol of a Type II dapp to
become their own protocols. They also have their own
tokens to generate a use.
• A specialized type of software that fulfills a unique need
or function.
• The DAO - form a leaderless company, program rules
at the beginning about how members can vote and
how to release company funds and then….let it go.

13. • Pickflix: is a new movie prediction game where you pick your favorite movies for
that particular box office release instance during a given time.
• Ethereum: has a created a programming language that then allows developers to
create their own decentralized applications on the Ethereum blockchain with
exciting results that address all types of consumer and business issues.
• StorJ: have followed suit with a decentralized data structure for public or private
cloud storage.
• Javvy: An all-in-one crypto experience, a Universal Wallet, built-in decentralized
exchange, quick & easy registration, superior user experience,
• Monero: open-source cryptocurrency created to focuse on fungibility, privacy and
decentralization. Monero uses blockchain to broadcast or send transactions, but
no outside observer can tell the source, amount or destination.
WHAT’S UP WITH DAPPS?
DAPPS IN ACTION

14. https://i.redd.it/mqso53gfwhvy.png
WHAT’S UP WITH DAPPS?
USE CASES

15. https://i.redd.it/mqso53gfwhvy.png
• State of the dApps: https://www.stateofthedapps.com/
• NEO: http://ndapp.org/
• DappRadar: https://dappradar.com/
• Ethereum Dapps: http://ethdocs.org/en/latest/contracts-and-transactions/developer-tools.html
• dApp University: http://www.dappuniversity.com/
WHAT’S UP WITH DAPPS?
RESOURCE LINKS

16. THANK YOU!