Blockchain 101

1. Blockchain 101
Diego Pacheco

2. The Wild Wild West(WWW) early days

3. Blockchain

4. Centralized “ledger”
https://www.youtube.com/watch?v=l9jOJk30eQs

5. Evolution

6. Distributed Ledger

7. Blockchain
https://anders.com/blockchain/blockchain.html
https://blockchaindemo.io/

8. One simple way to see it: “Distributed” Database

9. Structure

10. When Blockchain make sense?

11. Struggle for the “killer App”
https://www.bloomberg.com/news/articles/2018-01-10/buffett-says-cryptocurrencies-are-certain-to-come-to-bad-ending

12. Real Use cases
❏ Brazilian Government Plans to Process Petitions and Write Laws on Ethereum
https://cointelegraph.com/news/brazilian-government-plans-to-process-petitions-and-write-laws-on-ethereum
❏ Burger King launches WhopperCoin crypto-cash in Russia http://www.bbc.com/news/technology-41082388
❏ Banks are finally preparing to use cryptocurrency to move money between them
https://qz.com/1066467/uber-ipo-what-new-ceo-dara-khosrowshahi-will-have-to-solve-to-take-the-company-public/
❏ Open Bazaar(Bitcoin) https://www.openbazaar.org/
❏ Blockchain — solution for the renewable energy market.
https://hackernoon.com/blockchain-and-energy-market-2aa6add6e86e https://wepower.network/
❏ Crypto Cats :-)
❏ https://www.cryptokitties.co/

13. “Possible” use cases

14. “Possible” use cases

15. Cryptocurrencies: Market Cap & Value
https://coinmarketcap.com/

16. Back to the Bitcoin

17. Protocol: Beyond the Token.

18. ETH
❏ Easy to Code and understand
❏ JavaScript SDKs
❏ Solidity - Smart Contracts
❏ Open Source
❏ Frameworks & Ecosystem
❏ Cost per Tx “gaz”
https://www.ethereum.org/

19. ETH: Frameworks
http://truffleframework.com/
https://metamask.io/
https://www.npmjs.com/pac
kage/ethereumjs-testrpc

20. ETH: CODE
https://github.com/diegopacheco/
blockchain-playground/blob/maste
r/truffle-hello/contracts/MetaCoin.
sol
https://remix.ethereum.org/#
version=soljson-v0.4.13+co
mmit.fb4cb1a.js&optimize=fa
lse

21. Security & Incidents
A hacker stole $31M of Ether — how it happened, and what it means for Ethereum
https://medium.freecodecamp.org/a-hacker-stole-31m-of-ether-how-it-happened-and-what-it-means-for-ethereum-9e5dc29e
33ce
The $280M Ethereum bug. https://blog.comae.io/the-280m-ethereums-bug-f28e5de43513
70M DAO Exploit(2017) https://www.cryptocompare.com/coins/guides/the-dao-the-hack-the-soft-fork-and-the-hard-fork/
Officials arrest suspect in $4 billion Bitcoin money laundering scheme
https://arstechnica.com/tech-policy/2017/07/officials-arrest-suspect-in-4-billion-bitcoin-money-laundering-scheme/
Cryptocurrency mining affects over 500 million people. And they have no idea it is happening.
https://blog.adguard.com/en/crypto-mining-fever/

22. Blockchain issues
❏ Hype / bubble
❏ Just “trading” for now - no consumer centric.
❏ Incidents / Money hack/ forgot my pass
❏ Slow
❏ BC Size
❏ Transaction cost
❏ Scalability
No Bitcoin-based protocol can handle more than 20M users per month
https://runeksvendsen.github.io/blog/posts/2017-10-08-no-bitcoin-based-protocol-can-handle-more-than-20m-users-per-mo
nth.html
❏ Energy Consumption - 1tx = house for a week.
https://motherboard.vice.com/en_us/article/ywbbpm/bitcoin-mining-electricity-consumption-ethereum-energy-climate-chang
e

23. IOTA (Tangle) - 2017
https://iota.org/IOTA_Whitepaper.pdf

24. Hashgraph (swirlds) - 2017
https://hashgraph.com/
http://www.swirlds.com/downloads/SWIRLDS-TR-2016-01.pdf

25. Resources
❏ https://github.com/diegopacheco/blockchain-playground
❏ https://coinmarketcap.com/
❏ https://blockchaindemo.io/
❏ IOTA: https://iota.org/IOTA_Whitepaper.pdf
❏ HashGraph: http://www.swirlds.com/downloads/SWIRLDS-TR-2016-01.pdf
❏ https://medium.freecodecamp.org/a-hacker-stole-31m-of-ether-how-it-happened-and-what-it-means-for-ethereum-9e
5dc29e33ce
❏ https://blog.comae.io/the-280m-ethereums-bug-f28e5de43513
❏ https://www.cryptocompare.com/coins/guides/the-dao-the-hack-the-soft-fork-and-the-hard-fork/

26. Blockchain 101
Thank you!
Diego Pacheco