Methodology

Conducted on the blockchain, smart contracts are self-executing programs based on an if-then logic that are intended to control legally relevant events and actions. They allow us to apply blockchain to create different sets of services. For Servicechain.io, there are two primary smart contracts that interact with a react based front end to create the decentralized application (dAPP for short).

Factory Smart Contract

This is a parent for the Service contract enables companies to create individually deployed contracts in which their employees can interact with data the company has the primary responsibility of setting up the instance of the factory contract

createService is a function that creates an instance of the Service contract for a given instance of the Factory contract. This allows the data for a specific “factory” (company) to be separate from other companies and enables the blockchain to be less cluttered with simultaneous amounts of transactions occurring

Service Smart Contract

The second contract is Service which enables the set of services that empower the application which includes the functions submitTip, sendRatings, getRatings, enterHours, and getTotalHours.

submitTip is a function that allows customers to transfer money from their wallet to the wallet of the employee

sendRatings allow a customer to give a rating to an employee

getRatings allow an employee to view the average ratings they have received from customers

enterHours allow an employee to enter their current hours worked for an arbitrary time frame

getTotalHours allow an employee to view their total hours they have worked since they started using the system

These six functions represent the core functionalities of our decentralized web application and allow us to create a service based application on the blockchain.

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App Structure

The Factory and Service smart contracts work with a custom built front end to enable the decentralized application. The front end is built using React.js, Next.js, as well as some basic Javascript. The app also uses real time market data on ethereum to convert prices into USD in order to ease this transition by making use of aws Lambda and the Gecko API endpoint. Below you can see the pipeline of our application making use of all of these technologies and can test these functionalities out by accessing our demo.

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Data Usage

In the application of smart contracts, there is no data heavy process that involves cleaning, analysis, and modeling like many data driven projects. Many smart contracts do not rely on any data, and instead require data unique to users which will grow as more and more users use the product (the blockchain acquiring more data as time goes on). Within the Servicechain.io application, users data helps craft the blockchain from which much of the value of the application derives. That is, as more and more users use the application, more data regarding average tips, average ratings, and total hours worked are available to the user in the application.

With this data our application will be able to provide real time statistics to both the employees and managers of companies articulated in a performance dashboard form and allowing incentivized rewards such as NFT certifications.

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