In previous posts, I gave an overview of the challenges of supply chains, an overview of a blockchain-enabled supply chain platform, as well as a  hardware implementation for production integration. Now we would like to give some examples for implementing smart contracts that allow asset tracking in the blockchain.

A Simplified Asset Tracking Case

In our simplified case, we would like to track assets throughout the supply chain. In reality, the data structures for the assets might be more complicated, but we will focus on a few aspects only: name, description, and manufacturer. It should be guaranteed that there is only a single instance of an asset at any time which leads to a uniqueness requirement of the ID. We would like to keep track of origin and history of the asset. The key actions that should be supported are the creation of new assets as well as transfers of assets. Furthermore, there should be the possibility to check whether a person is actually in the possession of the asset ownership certificate or not.

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