Tweet Verifier

Tweet verifier aims to prevent the spread of false information. Users may submit a tweet by using their ethereum wallets to create immutable records of it. It is planned as 4 week(1 working day) for 2 people, for Istanbul Technical University's Project I course.

Smart Contract

For deployment, go to Ethereum Remix. Upload the tweet-verifier.sol. Use a compatible solidity version(^0.4.0 - 0.6.0) to compile. (You may get some warnings about some solidity features that are still beta.)

Go to deployment section. For demo purpose, Javascript VM can be used. Or injected Web3 for on-chain tests. Vertical navigation in Deploy, Run & Transactions section show the contract and allows you to transact to contract. There are two functions: one for submitting new tweet record and a function to query tweet record by id.

Webpage

A simple front-end app is implemented for smart contract. web3js and metamask is used to connect Ethereum network. For live preview of current application: Heroku: tweet-verifier

In order to use preview webpage, you need to connect Ethereum ropsten test network. Contract is deployed there and its address & network is hardcoded.

Front-end Functionalities

Submit A Tweet

Change initial content in following cases:

1. When input is empty.
2. When the input is not a valid tweet URL
3. When the input is a valid tweet URL

NOTE: It submits the same tweet from (./tweet.json) each time. Because Twitter rejected API access and blocks web-scraping tweets. If you have API auth in a idle account, you can communicate to share keys.

Query A Tweet

Change initial content in following cases:

1. When input is empty.
2. When the input is not a valid recordId (form doesn't check it)

Inject Web3

• Use Google Chrome & Metamask extension
• Change status indicator color when clicked (The Web3 connection via Metamask is obtained at this level)

Clear

• Change the current content to initial content.

Project Deliverables

All completed.

W1

• Data Model
• Guide Materials

W2

• Smart Contract
• Front-end Draft

W3

• Contract API
• Front-end Functionalities & Design

W4

• Web-App
• Presentation

Licence

MIT License

Copyright (c) 2021 Samed Kahyaoglu, Guris Ozen

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