Einführung in Blockchain Technologie - Consensus/Proof Of Work, und Was ist besonders an Ethereum und IOTA?

1. Blockchain/Ethereum/IOTA
Itemis Leipzig
https://blockchain.wasistdas.org/

2. Agenda
1. Blockchain - Was ist das?
2. Consensus - Proof-of-work
3. Ethereum - VM fürs Internet
4. IOTA - Die Blockchain wird zum Graph
5. Hyperledger - Linux way
6. Wissenswertes - TON, Filecoin, NEO, XAIN, e-estonia
2
https://blockchain.wasistdas.org/

3. 1. Blockchain - terms
3
Blockchain - system of nodes to exchange data/transactions collected as block
Node - blockchain participant (full nodes vs thin or light nodes)
Miner - full node which validates transactions (the engines of the blockchain)
Wallet - light node/software client of a distributed ledger/blockchain
Transaction - data collected as blocks (the fuel of the blockchain)
Difficulty - indicator how easily can a data block mined
Ledger - distributed or central data store (synonym for blockchain)
https://blockchain.wasistdas.org/

4. 1 - Blockchain - Ziele vs. Erwartungen/Träume
Ziele: Blockchain fits
- Privacy: Datensicherheit durch RSA
- Scale: Skalierbar durch Dezentralität
- Identity: Identifizierbar durch Token
Erwartungen/Träume
- Grenzenlos :D
Beispiel:https://anders.com/blockchain/blockchain.html
4
https://blockchain.wasistdas.org/

5. 2. Consensus - Proof of work
5
https://blockchain.wasistdas.org/

6. 3. Ethereum - VM fürs Internet
Pros
- Smart Contract
- Blockchain is the CP+Heap+Stack
- State reflect in Blockchain
Cons
- Skalierungsproblem (25tx/sec)
6
https://blockchain.wasistdas.org/

7. 3. Ethereum - Solidity
7
https://blockchain.wasistdas.org/

8. 4. IOTA - Blockchain wird zum Graph
Pros
- Löst Skalierungsproblem
- Kann Offline genutzt werden
- Keine Transaktionsgebühren
- 0-value Transaktionen to send data
Cons
- Coordinator node
- Keine Smart Contracts
8
https://blockchain.wasistdas.org/

9. 5. Hyperleger - Linux way
9
https://blockchain.wasistdas.org/

10. 6. Wissenswertes
10
1. TON - Telegram Open Network
- white-paper https://drive.google.com/file/d/1ucUeKg_NiR8RxNAonb8Q55jZha03WC0O/view
- promo video: https://www.youtube.com/watch?v=3O-jnS72gY4
2. Filecoin - Distributed file cloud
- white paper: https://filecoin.io/filecoin.pdf
3. NEO - Asiatische Alternative zu Ethereum
- white paper: http://docs.neo.org/de-de/sc/white-paper.html
4. XAIN - Porsche bringt die Blockchain ins Auto
- website: https://xain.io/
5. E-estonia - e-identity based on blockchain
- ksi-blockchain: https://e-estonia.com/solutions/security-and-safety/ksi-blockchain/
- become a e-resident: https://apply.gov.ee/ (100 Euro)
https://blockchain.wasistdas.org/

11. Fertsch
Fragen?
11
https://blockchain.wasistdas.org/