Major project Logistics & Supply Chain

Blockchain provenance tracker for food or medicine

Record each step of a product's journey on a blockchain so a buyer can scan a code and verify where it came from.

The brief

Fake medicines and adulterated food travel through long supply chains where records can be changed. Build a smart contract and app that records each handover (producer, transporter, shop) with a signature, and lets a buyer scan a code to see the verified journey. Good looks like: contracts tested with a full test suite, roles that stop anyone adding steps they should not, and a clear explanation of what the blockchain proves and what it does not.

What you will build

Design the roles, steps and data to record
Write the smart contract in Solidity
Test it thoroughly on a local chain
Build a web app to add steps and scan codes
Store large files off chain with a hash on chain
Write a threat model and cost estimate

Free, open data to build it with

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