"Proof of Existence Dragon DApp"

Description

This is a proof of existence DApp. This DApp provides a UI that allows users to interact with IPFS as well as smart contracts on the Ethereum blockchain.

To make the storage system completely decentralized, the images are saved in IPFS (Inter Planetary File System) using Infura.

Users can retrieve necessary reference data about their uploaded items to allow other people to verify the data authenticity.

Upload Image.

Choose an Image, input a tag and timestamp as strings. When loaded, click Submit. Metamask will ask you to confirm transaction with ETH Fee

Check Image.

Your image's address, tag and timestamp is recorded on the Ethereum Blockchain and you can check it when selecting the image and submiting.

How to set up

Clone the project repository.

$ git clone https://github.com/martagonz/proof-of-existence-dapp.git

Go to the project directory

$ cd proof-of-existence-dapp

Install node modules

$ npm install

Compile Smart Contracts

$ truffle compile

Start a development blockchain network

$ ganache-cli

Migrate smart contracts

$  truffle migrate --reset

Start Dapp

$ npm run start

Run tests

$ truffle test

Acknowledgments

My fellow students at ConsenSys Academy