1. Blockchain Smartcontracts What is, threats and opportunities.
Roger Olivet
April 26st 2018
Barcelona

2. “ everything that can be invented has been invented
Charles H. Duell (Commissioner of US patent office) 1899

3. YEAR 2000

4. THE BLOCKCHAIN WHAT ARE WE TALKING ABOUT

5. BLOCKCHAIN IS NOT BITCOIN
Bitcoin is a publicly-owned, digital form of currency that uses cryptography to send and receive payments.
Plum gummi bears. Apple pie yummy cake with candy
BRAIN NUKLEUS
Blockchain is a Technology layer.
TECHNOLOGY
Sugar gummi bears. Apple pie yummy cake with candy
VISUAL CORTEX
Not tied to a single use case.
MULTY PURPOSE
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AROUND THE WORLD
P2P protocol like. No central node.
DECENTRALIZED

6. BLOCKCHAIN – PROPERTIES
HIGH AVAILABILITY
DISTRIBUTED
NETWORK
As this is a P2P like protocol, data is duplicated on each node.
INMUTABLE
With the current computer capacity, there is no technical way to change data.
TRANSPARENCY
Transactions are open, and may be checked be everyone.

7. BLOCKCHAIN - DO YOU NEED IT?1
NEED A DATABASE?
Blockchain makes sense if you need to store data 2
DOES IT REQUIRE A SHARED ACCES?
If shared access is not mandatory, you don’t need a blockchain. 3
ARE WRITERS KNOWN AND TRUSTED 4
DO YOU NEED A TRUSTED 3RD PARTY?
If there is the need for a regulator or a contoller, this is not your technoloy.

8. AN (EXTREMELY BAD) HASH FUNCTION
HELLO WORLD A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

9. AN (EXTREMELY BAD) HASH FUNCTION
HELLO WORLD A B C D E F B C D D F G G H I J K L M N H I J K L M N O O P Q R S T U P Q R S T U V V W X Y Z W X Y Z A

10. AN (EXTREMELY BAD) HASH FUNCTION
HELLO WORLD A B C D E F B C D D F G G H I J K L M N H I J K L M N O O P Q R S T U P Q R S T U V V W X Y Z W X Y Z A
IFMMP XPSME
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11. 01 02 03 HASH FUNCTIONS – SHA256 SHA 256 Secure Hash Algorithm
Hello world
64ec88ca00b268e5ba1a35678a1b5316d212f4f366b a8aeca37f3c
Hello world!
c0535e4be2b79ffd bf889314e4a3faec05ecffcbb7df31ad9e51a 02
Hello world
b32b9f2cb2cb86e0dc443eaa8e1ee0839eaa141d0ea24bc7788cc31603caeaf8 03
SHA 256
Secure Hash
Algorithm

12. BLOCKCHAIN – A BASIC EXAMPLE
HASH 1
To calculate
CONTENT
??? – Roger-35
BLOCK #2
HASH 2
??? – Belén 39
BLOCK #3
HASH 3
??? – Gala 1

13. BLOCKCHAIN – A BASIC EXAMPLE

14. BLOCKCHAIN – A BASIC EXAMPLE

15. BLOCKCHAIN – A BASIC EXAMPLE
HASH 1
F0965
CONTENT
??? – Roger-35
BLOCK #2
HASH 2
To calculate
F – Belén 39
BLOCK #3
HASH 3
??? – Gala 1

16. BLOCKCHAIN – A BASIC EXAMPLE

17. BLOCKCHAIN – A BASIC EXAMPLE
HASH 1
F0965
CONTENT
??? – Roger-35
BLOCK #2
HASH 2
6EA3
F – Belén 39
BLOCK #3
HASH 3
B20D
6EA3 – Gala 1

18. BLOCKCHAIN – A BASIC EXAMPLE

19. LIVE DEMO

20. Evidence PAPER? (in case needed) SMARTCONTRACTS
Presenting papers in Court may look simpler, but
having a 24/7 available registry may have its benefits.
Evidence
(in case needed)
EVENT DATE
MARCH
AUGUST
NOVEMBER

21. HOW DOES A SMARTCONTRACT LOOKS LIKE?

22. SMARTCONTRACTS

23. BLOCKCHAIN – A BASIC EXAMPLE

24. BLOCKCHAIN – A BASIC EXAMPLE

25. Vitalik Buterin 1994 ETHEREUM CREATOR FORBES 30 UNDER 30
A smart contract is a mechanism involving digital assets and two or more parties, where some or all of the parties put assets in, and assets are automatically redistributed among those parties according to a formula based on certain data that is not known at the time the contract is initiated. V. Buterin

26. THREATS

27. THREATS– ¿DO WE NEED VIRTUAL CATS?

28. THREATS– POWER CONSUMPTION
Source:

29. THREATS– POWER CONSUMPTION
Source:

30. OPPORTUNITIES FROM A DECENTRALIZED SYSTEM LIKE THIS

31. OPPORTUNITIES – BLOCKCHAIN
Execute a legal contract
Transfer money
SWIFT?
Certify a supply chain
No intermediates need
Register music copyright
Original Digital Copy
Prove your identity
Same way as digital certificates
Share electricity with the neighbours
Any good – no intermediates
Prove ownership of an asset
Token concept

32. SMARTCONTRACTS

33. SMARTCONTRACTS

34. “
Goldman and Google Are Among the Most Active Blockchain Investors- BLOOMBERG 17/10/2017

35. THANK YOU
QUESTIONS?