Supply chain

Here, we present a use case we tested in-house for a fictitious company called 'Clear Supply'.


By harnessing the power of blockchain and Overledger, you can offer enterprises and their customers the opportunity to delve into a product's complete journey, from its origin to the store shelf, revolutionising how consumers understand and interact with the products they use.

Blockchain technology assigns a distinct address to each touchpoint in this journey, creating an unbreakable link between materials and their verified, certified sources. This robust verification process ensures that a brand's claims about a product's origin and impact are not just words but verifiable facts.

With this system, consumers would gain unprecedented insight into the journey of raw materials, tracking each transformation at every location. They can zoom in on the ethics, initiatives, and standards in place, empowering them to make informed decisions and truly support sustainable, ethical products.

Use case: 'Clear Supply'

Let's frame this example by examining a t-shirt's journey from the cotton farm to the store.

Let’s build an Overledger application to power this use case:

We will start by explaining the flow of interactions with blockchain networks so a brand can store all the information, from the cultivation of raw materials to the placement of the t-shirts in-store.

2 smart contracts have been deployed to support the t-shirt supply chain

  • 1 fungible token deployed through Quant Connect
  • 1 non-fungible token deployed through Quant Connect

Interactions steps

  1. Farmers mint tokens for each kg of raw cotton
    1. Smart contract write API [ Mint function]
  2. Raw cotton tokens are transferred to the mill's address
    1. Smart contract write API [ Transfer function]
  3. The mill transforms cotton into a bolt of cotton by minting a token
    1. Smart contract write API [ Mint function]
  4. The bolt tokens are transferred to the factory
    1. Smart contract write [ Transfer function]
  5. Factory burn bolts of cotton tokens as they use the cotton to make T-shirts
    1. Smart contract write API [ Burn function]
  6. For each T-shirt, a non-fungible token is minted
    1. Smart contract write API [ Mint function]

Once the t-shirt is in store, it will have a reference like a QR code which can be queried by a customer and unveil all the information related to the making of the item. This last step requires a smart contract read endpoint through Overledger.