This project aims to offer a drastically simple blockchain demo of a trustless supply chain, in which a customer buys an electronic device from an OEM after a service provider added value to it. Throughout the entire supply chain an IoT device is monitoring environment parameters and a tail of the syslogs for the OEM and Service Provider to be able to prove correnct treatment and secure delivery.
The underlying blockchain can be installed, configured and all participants permissioned using the following Ansible project on Github
Thereafter copy the .env.sample file to .env and fill in your nodes addresses and private keys.
In order to install the required python packages run:
pip3 install -r requirements.txtA multitude of web-based apps give every one of the following stakeholders direct access to the blockchain.
| name | description | port webinterface | port api | status |
|---|---|---|---|---|
| serviceProvider | participant adding value to product | 5004 | 5009 | |
| customer | product purchasing party | 5004 | 5007 | |
| oem | initial producer of product | 5004 | 5003 | |
| bank | issuer of stablecoin USD | 5002 | 5001 | |
| iot | IoT Device with full copy of ledger | - | - |
In this usecase, an OEM is selling goods (electronic devices) to a customer, using a stablecoin USD. The stablecoin is issued by a bank on port 5002 and can be refunded by sending the tokens to the networks burn address.
In order to represent the goods on the supplychain, the OEM mints products by issuing a new asset class and selling the asset to the service provider in an atomic exchange for USD.
Afterwards the service provider re-sells the product to the customer for the original price plus a markup using multichains atomic exchange functionality aswell. From the minting of the asset until the customers reception of the product, the IoT OEM can initiate a virutal IoT device which writes data contiuously to the blockchain regarding location, temperature, humidity, shock (G-force) and the tail of the syslogs.
Before accepting the atomic exchange both the Customer and the Service Provider can check the data written by the IoT device on port 5004 and thus check for mistreatment or malware deployment in the syslogs.
After the multichain has been deployed using for example this Github Project and the .env file has been filled with the nodes addresses and private keys, the webservers can be started by executing the run.sh script.
bash run.sh
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