Intro to Blockchain and Ethereum NIColas Cardenas - PowerPoint PPT Presentation

Intro to Blockchain and Ethereum NIColas Cardenas nic247365@gmail.com

Images of bank notes: http://banknotes.resbank.co.za/banknotes. Accessed 2016-06-11 Image of Alice: http://jojoesart.deviantart.com/art/Alice-in-Wonderland-301425862. Accessed 2016-06-11 Image of coin: http://www.coinzoo.net/africa-world-coin-collection/item/south-africa-5-rand-km492. Accessed 2016-06-11

Transaction Number: Transaction #1 • Transaction inputs: R20 note and R10 note from me • Transaction outputs: R25 to Alice and R5 back to me as • change Transaction contract: “I Nic reserve the • aforementioned amount for Alice, who has to present her signature as ID to claim the funds” Signature: Nicolas I. Cardenas • We make duplicates for both of our record keeping • IOU image: https://bestmobileappawards.com/app-submission/iou-pro-debt-manager. Accessed 2016-06-11

Transaction Number: Transaction #2 • Transaction inputs: R25 owed to Alice from transaction #1 • Transaction outputs: R10 to Bob and R15 back to Alice as • change. Transaction contract: “I Alice reserve the aforementioned • amount for Bob, who has to present his signature as ID to claim the funds” Signature: Alice Liddell • Make duplicates of all transactions so they have a paper • trail of the transfer of funds Image of Bob Marley: http://www.hunter.cuny.edu/afprl. Accessed 2016-06-11

Transaction #1 Transaction #2 Bob gives the transactions to our mutual friend Charlie to • verify Charlie checks that Alice has enough listed against her • name to pay Bob, and further more that I have enough to pay Alice Charlie checks that each time value is transferred, the • person transferring the money has signed to prove it is indeed them unlocking the funds Image of Charlie Chaplin: https://meatgrinder.co/colour-charlie-chaplin-301823.html. Accessed 2016-06-11

Nic’s unspent amounts : Alice’s unspent amounts : Bob’s unspent amounts : R5 from Transaction #1 R15 from Transaction #2 R10 from Transaction #2

N Image of distributed network: http://anet.sourceforge.net/docs/user/userIntro.html. Accessed 2016-06-11

Block Miner image: https://www.cryptocoinsnews.com/kncminer-ditches-customers-favor-mining-bitcoin-litecoin-themselves/ Accessed 2016-06-12

 Now how does one get the entire network to come to a consensus on who verified the TXs?? Can’t use a timestamp.

A puzzle Block header Block Crossword image: http://www.animationoptions.com/photobphi/empty-crossword-template. Accessed 2016-06-12

Block header Block Blockchain image: http://alexgorale.com/how-to-program-block-chain-explorers-with-python-part-1. Accessed 2016-06-12

Calculator image: http://calculator.citizen-europe.com/. Accessed 2016-06-12 Cell phone image: http://www.notebookcheck.net/Sony-Xperia-Z5-Compact.150067.0.html. Accessed 2016-06-12

 So the miners process the code in each transaction. They will only do it though if there is enough money tied to that contract to pay to process code.  The advantage of this is that programs can be executed on a distributed network where no one can tamper because it is running on every miner simultaneously.  If there isn’t enough money, the miner just won’t run ones code.

Use cases for Ethereum  ..\..\..\Desktop\Slock.it - Ethereum Blockchain + IoT.mp4  ..\..\..\Desktop\Augur - How A Decentralized Prediction Market Works (Narrated by Shooter Jennings).mp4  ..\..\..\Desktop\TransActive Grid Intro.mp4

 Mastering Bitcoin – Andreas Antonopolous  Coursera – Bitcoin and Cryptocurrency technologies  Bitcoin Academy – 3 courses  Bitcoin whitepaper by Satoshi Nakamoto  Ethereum whitepaper

Questions?