Decentralized Supply Chain

Project Description

Supply Chain DApp. Items are tracked along Farmers, Distributors, Retailers and Consumers. Implements Access Control and State Transitions as defined in the diagrams below.

Integrates IPFS storage for product images, the returned hash is then saved as part of the Item's metadata.

UML Diagrams

Activity Diagram

Sequence Diagram

State Diagram

Data Model Diagram

Dependencies

• Solidity v0.6.0 (solc-js)

• Node v12.17.0

• Web3.js v1.2.1

• Truffle v5.1.30 (core: 5.1.30) - Development framework

• @truffle/hdwallet-provider v1.0.36 - HD Wallet-enabled Web3 provider

• truffle-assertions v0.9.2 - Additional assertions for Truffle tests

• chai v4.2.0 - Assertion library

• lite-server v2.4.0 - Lightweight development only node server

• ipfs-api v26.1.2 - A client library for the IPFS HTTP API

Smart Contract

• Deployment TX on the Rinkeby Network: https://rinkeby.etherscan.io/tx/0xf32530de6483b54e7d0c818fbb12ca1ab14fb4a7ffab42552f7e0bc25202841c
• Contract Address on the Rinkeby Network: https://rinkeby.etherscan.io/address/0xC53eC3E3c97Ad52485d78FDC632855f28018cc0a

IPFS

• Product Image IPFS Hash: QmabWWJ2ED6FjgpbgXrjX8qotwDfXp2r9DvUTMHbFVjSCg
• Product Image in IPFS: https://ipfs.infura.io:5001/api/v0/cat?arg=QmabWWJ2ED6FjgpbgXrjX8qotwDfXp2r9DvUTMHbFVjSCg

TX history

• Harvested: 0x0e08dac2df56e69c098166feb74bc62f3fcf74865dbb36a84c6d42ea3879213f
• Processed: 0xbdb8214ddf79e1555afadf63ef6da066a03803409f6e49c2b246c12c69bb8228
• ItemImageHashSaved: 0xb2202032cbdf176207dc485b8febcfc8432d5a36388bdb8253225f9831ed67bc
• Packed: 0xece69c876b90a702c575126a3899276cb536508e7ccbf365830942a42a333ad3
• ForSale: 0xb06b9089981d7ae93c45aa0393549659e7be05eba395c5ed39518f954d45a994
• OwnerChanged: 0x718eb83414b886852f25b49b33efe22e45b5a7265a0ece494b4e37bbc9e9b160
• Sold: 0x718eb83414b886852f25b49b33efe22e45b5a7265a0ece494b4e37bbc9e9b160
• Shipped: 0x254acbf1f274f162e54f52a3bd639e5ac5b89ce45a1d856204ca6c76876cbd3f
• OwnerChanged: 0xc61fb724a34e99ae4999af6fbf1fcf0badeb19dff0ab383c3ce3fedc4b500646
• Received: 0xc61fb724a34e99ae4999af6fbf1fcf0badeb19dff0ab383c3ce3fedc4b500646
• OwnerChanged: 0xa76d8b1bdbb9fb3534671a96d3e5878da25fb0c3bbda999531f92daeef088f1e
• Purchased: 0xa76d8b1bdbb9fb3534671a96d3e5878da25fb0c3bbda999531f92daeef088f1e

Deployment to Rinkeby

• Requires .infuraKey and .secret files (see truffle-config.js).

Getting Started

Install dependencies

npm install

Launch Ganache

ganache-cli

Compile, test and migrate

truffle compile
truffle test
truffle migrate --reset --network=rinkeby

Lauch the DApp

npm run dev