1.0 Einführung und Ziele Star Notary Service erlaubt es, Sterne mit Koordinaten in der Ethereum Blockchain zu speichern. Diese Applikation ist eine Demoanwendung, welche die Funktionsweise einer DApp demonstriert. Es wird die Funktionsweise von Solidity und Interaktion mit Javascript vorgestellt. 1.1 Aufgabenstellung Die Anwendung implementiert den Ethereum ERC-721 Token Standard als Solidity Smart Contract. Der […]
Tag: UML
A trusted Database for Systems Boundaries
Why a Blockchain? Many people ask it, some Experts see it as the new golden hammer for all database tasks. Blockchain is a synonym of Distributed Ledger Technology (DLT). A DLT-System has three main components, the Ledger (Blockchain, technical a chained list), consensus algorithms, and distribution. Distribution makes it safe against manipulation; every participation holds […]
Organic Oil Manufacturer
Organic oil manufacturer Ethereum Dapp example. It illustrates the supply chain from the farmer to the customer as a smart contract. Business Story The organic farmer Bob produces exclusive rapeseed oils. Bob presses the oils in a nearby rapeseed mill. Afterward, he sells the oils at the farm shop. The oil is bottling in one-liter […]