# Midterm essay Blockchain{.container-fluid .text-center style="margin-bottom:15px"}
**Programming Experience Seminar 2018**
Johannes Schneider, Julian Weise
## NPM packages
```javascript {id="importExample"}
import forge from 'node_modules/node-forge/dist/forge.min.js';
```
## Basic transaction implementation
## Basic transaction usage
```javascript {id="transactionExample"}
import Wallet from 'src/blockchain/model/wallet/wallet.js';
import Transaction from 'src/blockchain/model/transaction/transaction.js';
import TransactionInputCollection from 'src/blockchain/model/transaction/transactionInputCollection.js';
import TransactionOutputCollection from 'src/blockchain/model/transaction/transactionOutputCollection.js';
const sender = new Wallet();
const inputCollection = new TransactionInputCollection(sender);
const outputCollection = new TransactionOutputCollection();
(async () => {
return new Transaction(sender, inputCollection, outputCollection);
})();
```
## Inspecting transaction object
## Webcomponent implementation
## Visualization
## Architecture Diagram of Graph Visualization
## Custom Graph Visualization (canvas)
## Resources / Literature
- [Stuart HaberW. Scott Stornetta: How to time-stamp a digital document (1991)](http://www.foo.be/andria/docs/haber91how.ps "How to time-stamp a digital document (1991)")
- [Dave Bayer, Stuart Haber, W. Scott Stornetta: Improving the Efficiency and Reliability of Digital Time-Stamping (1992)](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.71.4891&rep=rep1&type=pdf "Improving the Efficiency and Reliability of Digital Time-Stamping (1992)")
- [Satoshi Nakamoto: Bitcoin: A Peer-to-Peer Electronic Cash System (2008)](https://bitcoin.org/bitcoin.pdf "Bitcoin: A Peer-to-Peer Electronic Cash System (2008)")
- [The Economist: Bitcoin: Blockchains: The great chain of being sure about things (2015)](https://www.economist.com/news/briefing/21677228-technology-behind-bitcoin-lets-people-who-do-not-know-or-trust-each-other-build-dependable "Blockchains: The great chain of being sure about things (2015)")