Blockchain
Technology
Intro
by Galin Dinkov
https://www.linkedin.com/in/galindinkov/
17 Oct 2017
About CryptoVarna
CryptoVarna is a group of people interested in Blockchain technologies, cryptocurrencies, ICOs and the
possibilities they provide. It is an open group with members specialized in different fields, from informatics to
law.
Facebook Group:
https://www.facebook.com/groups/123317971755498
Meetup.com:
https://www.meetup.com/preview/CryptoVarna-Blockchains-Bitcoins-Ethereum
Slack:
https://cryptovarna.slack.com/join/shared_invite/enQtMjYwNDU4OTQxNjIwLTVmOGM4MDEyMjgxYWVlZDRiYmI0OTI4ZGEwMzM3N2Q
wMzkyYzQ2OTFhOTgzZTAzODkyY2EyNjJlZDJhODE4ZmE
About VarnaLab
VarnaLab is an independent hacker’s space where people with common interest can meet, work and drink beer.
The spheres of interest include but not limited to: software technologies, hardware and electronics, art and
design, photography, gaming and more.
It is part of huge network of 1600 hackerspaces worldwide.
VarnaLab is a non-profit organization and is free for everyone. It is financially supported by its members by a
non-fixed donations.
Facebook Page:
https://www.facebook.com/varnalab/
Web:
https://varnalab.org
Trello:
https://trello.com/varnalab
Github:
https://github.com/VarnaLab
What is the
Blockchain?
The Blockchain is…
Data Structure
The Blockchain is…
Distributed
The Blockchain is…
Immutable
The Blockchain is…
Secure
The Blockchain is…
Anonymous (Pseudo)
The Blockchain is…
Autonomous
The Blockchain is…
Public or Private
Genesis
Before Bitcoin
● Libertarianism
● Evolvement of cryptography
● Cypherpunk
● Online payments
● Hashcash, b-money, Bit Gold
● Financial crises
Satoshi
Nakamoto
White Paper
White paper: https://bitcoin.org/bitcoin.pdf
Who is?
Hal Finney
1st Bitcoin Transaction
PGP Employee
Nick Szabo
Bit Gold
Smart Contracts
Wei Dai
b-money
Crypto++
Dorian Nakamoto
Finney’s neighbour
Who is?
Craig Wright
Claims to be Satoshi
Scientists think he’s a
scammer
What Can Be Used
For?
Cryptocurrency
● No central authority
● Faster* and cheaper* transactions
● Anonymous*
● Transparent
● Limited supply
Distributed File Storage
● Distributed
● Cheaper
● More secure
● Everyone can earn
● Filecoin made ICO for $200m+
Storj.io: https://vimeo.com/102119715
Digital Identity
● Easier to use
● Better privacy
● Safer against data breach
Interesting:
Password Pill
e-Estonia
Civic: https://youtu.be/2XDGX41nr1o
Voting
● Saves time
● Everyone can vote from
everywhere, anytime
● More secure!
● Immediate and transparent
results
● Anonymous
● Saves millions
Smart Contracts
● Rules in a form of a program
● Could replace the notaries
● Cannot be modified
● Validated and guaranteed by
thousands of independent nodes
instead of the court or the
government
● Smart property
Distributed Autonomous Organization
Crowdfunding (ICO)
Public Records
● No papers!
● Secure
● Transparent
● Cheaper
● Land/Property Registry of Russia,
Georgia, Sweden, Dubai
Copyrights
● Can prove the date and author of
any creation
● Lot cheaper and easier to use and
verify
IoT
● Secure communication between IoT
devices
● Sensors storing tamper-proof data
● Supply chains
IBM Blockchain: https://youtu.be/ZKscEx2lO-4
Car Leasing
IBM Demo: https://youtu.be/IgNfoQQ5Reg
Final
https://www.linkedin.com/in/galindinkov/
by Galin Dinkov

Intro to blockchain technology