Blockchain – Driving productivity, traceability and customer experience in supply chains

Dr Veronica Martinez from the Institute for Manufacturing (IfM) at the University of Cambridge, working with Caroline Burstall and Andrew Noblett at Caterpillar, has used a pilot project to show that blockchain can deliver significant supply chain benefits.

Since blockchain burst onto the scene in 2008, its evangelists have told us that – just like the internet – it will fundamentally change how we all live and work. And it clearly does have that potential.

So far, blockchain has mainly been used for cryptocurrencies, with Bitcoin the best-known example. But this digital technology is much more versatile and has a very broad set of potential uses across a range of sectors.

It essentially enables transactions to take place over a distributed database, with records that cannot be changed and are therefore highly secure [Find a deeper overview at the bottom of this article].


CROP - Blockchain - Depositphotos_136452644_l-2015

Image courtesy of Depositphotos.


Blockchain is an open platform, so companies can use it to build applications customised to their own needs and their customers’ needs. Some are already considering how they can innovate parts of their business operations in the form of ‘private’ blockchains.

Indeed, blockchain’s versatility means it has been attracting attention as a potentially valuable technology for supply chains. Its ability to handle secure and traceable transactions could strengthen trust among supply chain participants because they can keep track of shipments, deliveries and product quality during transport.

Blockchain is one of the top technologies that will significantly change the way consumers and providers operate. The US, China and Germany, among others, have placed blockchain at the centre of their industrial digital transformations.

This article first appeared in the November issue of The Manufacturer magazine. Click here to subscribe

Barriers to adoption

Having a resilient, secure and traceable distributed database, through which data – and payments – can be shared within and across organisations will be transformational. Indeed, firms are worrying about the consequences if they don’t get on board.

So why are we not seeing a race to adopt it? One major hurdle is the cost of implementation (particularly for those firms who have recently invested millions in state-of-the-art ERP systems), which currently outweighs its perceived but as yet unquantifiable benefits.

Another is the sheer scale of the task needed to integrate it into existing company-wide systems and processes.

CROP - Blockchain - Connectivity - Stock image

On top of that, most firms lack blockchain expertise and think they need to bring in consultants to help them implement it. Some of these consultants are being a little overenthusiastic in their sales pitches, which is resulting in even greater circumspection among their potential customers.

Adopting expensive, one-size-fits-all solutions could be a mistake for an organisation, particularly if such solutions don’t integrate with existing systems. Even those firms that are convinced of the benefits are wary of embarking on an exercise that cedes control of the technology to a third party.

Outsourcing is not only costly throughout the whole life of the implementation (making minor modifications in line with changes to the business quickly gets prohibitively expensive), it also prevents organisations from developing their ownership and understanding of the technology.

Low-cost blockchain pilot with Caterpillar

Our research group at the IfM has been working with Caterpillar, who were interested in exploring blockchain as a potential solution to address a business issue. One part of Caterpillar’s business sells a range of diesel and gas engines, which tend to be customised to meet each customer’s needs.

Managing these customer orders has remained a largely manual process over the years, with modifications to the customer’s specification coming in through a variety of channels including phone, fax (yes really!) and email. These requests were then checked by Caterpillar’s production team to make sure they were deliverable.


image courtesy of Caterpillar Global Mining

Image courtesy of Caterpillar Global Mining


This back and forth process of specification and negotiation could last several days, involving six employees and, with information being stored in different formats, in different places by different people, was both inefficient and had plenty of potential to go wrong.

Blockchain was identified as a possible way to streamline this process, making it more efficient while also preserving secure, accurate information. The technology’s characteristics matched the business needs, offering ‘traceability of transactions’ – tracking who, what and when an order was placed or modified.

Furthermore, it secures ‘irreversibility’ of records, offering a safe bridge of ‘trust’ between the customers and suppliers.

Caterpillar was interested in running a pilot as an initial exercise to explore and demonstrate what blockchain can offer, without heavy time and cost investment.

This presented us with an exciting opportunity. Could we build our own blockchain in such a way that Caterpillar could see what it is capable of and learn from the experience without having to make a huge organisational commitment to it?

Our mission was to build and use blockchain to automate the interactions between the customer (demand) and the manufacturing site (supply). We wanted the customer to be able to place orders and make modifications easily, in other words to have a better customer experience.

CROP Transforming Maritime Supply Chains - Stock Image

Image courtesy of Depositphotos.


For Caterpillar, the aim was to harness the  control and traceability that blockchain offers, both to deliver that enhanced customer service while reducing the time and cost of providing it.

DIY blockchain

The project had two key elements: programming the blockchain and simulating the business process. For the programming, we started with a blank sheet of paper.

With no prior experience, our first task was to decide which technologies to use, bearing in mind that one of Caterpillar’s requirements was to keep everything as simple as possible so that its employees could learn how to do it themselves.

We reviewed the options and picked the most basic applications: Hyperledger Composer for the backend (building the blockchain) and React for the user-interface. Both applications happen to be free.

It took four of us (three students and myself) six weeks and a lot of coffee to learn how to do it (mainly from online videos) and to write and de-bug 5,000 lines of code.

Digital Transformation Industry 4.0, the Fourth Industrial Revolution, Smart Manufacturing Data Analytics Digital Transformation Connected value chains - stock image

The other part of the process was to map the complexity of the existing system – identifying all the touch points between the firm and their customer, and where the data was being stored – and to specify a more streamlined, blockchain-enabled approach.

After much trial and error, we achieved our goal: a real-time method of sharing and managing data in a single record.

Achieving supply chain benefits

Once we had our blockchain in place and had tested it with one of Caterpillar’s customers, we carried out a ‘before and after’ analysis to show what we had achieved.

By automating the process, we had reduced the number of storage points from 20 to two, we had reduced the time taken to process a new order by two-thirds and we had halved the number of people needed to carry out the task.

And we had a very positive response from the customer who was now using a bespoke user-interface, which we had co-designed with its procurement team.

In a little more detail, the benefits from our blockchain pilot included:

  • Reducing the number of operations needed to place or amend orders, consequently making the customer order management process simpler and leaner: Blockchain reduced the process for placing orders from 21 to six operations
  • Reducing the average time of orders in the system by more than eight hours (493.3 minutes were saved for placing orders)
  • Showing the traceability of orders through the user interface via dashboards
  • Improving visibility to various supply chain participants through the written rights set on blockchain
  • Consolidating a single point of entry for placing and amending orders
  • Removing multiple checkpoints such as MRC, EDI, customer portal and emails
  • Reducing manual input into the orders
  • Eliminating duplications of report status such as Excel sheets
  • Decreasing the number of storage points
  • Reducing by 50% the number of account coordinators needed: from six to three
  • Reducing the quantity of errors/mistakes in the system.

The final part of the project was to identify a number of potential blockchain developers (and evaluate their costs) who could work with Caterpillar to take this project forward.

What did we learn?

Our research is the first to demonstrate that blockchain improves the efficiency of the processes involved in our pilot project: it reduces the number of operations, reduces the average time of orders in the system, reduces workload, shows traceability of orders and improves visibility to various supply chain participants.

The pilot showed that it is possible to implement blockchain in-house at a small scale and manage its growth within your business in a way that starts to give you quantifiable benefits but without introducing massive disruption and cost.

Of course, there were challenges along the way, but the benefit of this approach is that you are able to learn from those challenges, grow your own expertise and develop the technology in a way that integrates with your existing systems and processes.

What is blockchain?

Blockchain is a revolutionary technology that has so far been largely applied in the financial sector, particularly in cryptocurrencies such as Bitcoin and smart contracts, but has much wider potential application.

Essentially, blockchain is a decentralised distributed database which appends records with timestamps. Information input into the blockchain cannot be changed, so trust among participants is solidified.

This allows peer-to-peer transactions, and has four unique characteristics: (1) resilience, (2) safety, (3) traceability and (4) irreversibility.

Other applications include services in supply chain management, insurance, digital knowledge management and e-commerce, land management and market space, among others.

Dr Veronica Martinez is a University Lecturer and Senior Research Associate in Cambridge Service Alliance at the Institute for Manufacturing, University of Cambridge.

She has been working in the strategy management field since 1998. Before her academic career, she worked in the automotive industry, where she coordinated the launching of a new manufacturing quality assurance system.

She can be contacted on: vm338@cam.ac.uk

Caterpillar’s leads on this project are Andrew Noblett, Supply Chain Planning Engineer, and Caroline Burstall, Supply Chain Manager, Industrial Power System Division, Caterpillar Inc