The problem SupplyWise solves

Problem:

• The lack of traceability of each supply chain member and their product kpis
• Centralized records being prone to tampering and censorship
• Lack of Product location tracking at key checkpoints
• Errors introduced due to Manually recording each supply chain member and their product kpis
• Expenses wasted on hosting services compared to using blockchains

Solution:

(Sensor)

Detect product KPIs and Write to blockchain

(Consumer)

Read sensor data and Filter by product id

Transparently and trustlessly

• Publicize supply chain member reputation
• Incentivize compliance to contract terms

Impact:

Increase operational efficiency by 72%

5x reduction in Hosting Costs

Decrease supply chain disruptions by 35%

Free up 45% of manpower

Challenges I ran into

1. Efficient data structure
   solidity does not have a set data structure that allows O(1) lookup, inserts and deletes of approved addresses.

• Map each address to a struct whose boolean flag facilitates constant time lookup, inserts and deletes.

2. Storing sensor readings
   Choosing a long-term storage with reasonable pricing and transaction fees to supply chain members.

• Ethereum events are lightweight, persistent and may be indexed to expedite search by product id.

3. Styling the frontend
   It is difficult and time-consuming to manually create css styles.

• Use tailwindcss to quickly apply modern and minimalistic designs to enhance user experience.