This talk was held at the Azure Meetup Munich on March, 15th. In a joint development iBERA AG and Microsoft have developed a solution for the industry of food trade to exchange lab reports for pesticides and other relevant documents confirming the quality of food. Those documents go a long way from the original farmer over transport companies until finally to the food retailing. iBERA has the knowledge and hardware to check food fast for pesticides and Microsoft supported creating a solution to save documents in the cloud and to exchange them tamperproof. This talk gives insights into this joint project, the motivations and decisions, the architecture, and how we built it. Peter Kirchner is Software Engineer in Commercial Software Engineering (CSE) at Microsoft. CSE's purpose is to build together with customers and partners on new products and solutions. 

1. Blockchain in the
Food Supply Chain
Peter.Kirchner@Microsoft.com
Social everything: about.me/peterkirchner
15.03.2018 @ Azure Meetup Munich

2. Topics
Covered
Motivation, why and what
Workflow
Architecture
Smart Contract
Implementation

3. Food Supply
Chain

4. Workflows
Workflow 2:
Receive the
proof
Receive the proof via mail
Validate the proof
Workflow 1:
Storing a Lab
Report
Receive it via mail
Store it via the Outlook Add-In
Forward the proof

5. Architecture

6. Smart Contract
• Events
• StoreProofCompleted
• TransferCompleted
• Functions
• storeProof()
• transfer()
• hasProof()
• getProofInternal()
• getProof()
• getEncryptedProof()
• getPublicProof()
• getOwner()
• getPreviousTrackingId()
contract ProofOfProduceQuality {
struct ProofEntry {
address owner;
string encryptedProof;
string publicProof;
string previousTrackingId;
}
…
}

7. Implementation
• 3 projects
• Umbrella:
https://github.com/Azure/blockchain-supply-
chain-solution
• https://github.com/Azure/supply-chain-
office-integration
• https://github.com/Azure/supply-chain-
services
• https://github.com/Azure/supply-chain-
smart-contracts

8. Deployment
Local via geth or
testrpc
Ethereum (public
or private)

9. References
• GitHub
• https://github.com/Azure/blockchain-
supply-chain-solution
• Code Story
• https://www.microsoft.com/developerblog/
2018/02/26/using-private-ethereum-
consortium-network-store-validate-
documents/
• This Presentation
• Share link in Meetup event page next week