July 7th, 2018

Recently two of my worlds collided a bit; my start-up food business, and my side interest of blockchain tech. I found it incredible what a huge impact blockchain tech could (will) have on this area; not just food, but the whole supply chain.

In the last year I started using GS1 standards for my business. To give some background we’re a startup called Eat Grub and we make insect based food products for human consumption. I won’t talk much about it apart from to say you can click the link if you want to find out why we should be eating insects.

Anyway, using GS1 really changed the way we approached international shipments. We were forced into it due to gaining our very first major national listing in a supermarket chain outside of the UK – we’d never heard of it, and at the time we too were asking – What is GS1?

The reason we had to do so was for traceability, and also conformity. You can imagine a warehouse taking in 100 trucks worth of product each day from all over the world; you would need a specific standard in place or otherwise you’d have a ridiculous amount of information all over the place and their ERP system would be a disaster. If one location has a standard for receiving goods, then it only makes sense that all locations use the same standard. It saves paperwork, time and money. Most importantly it means you can more easily follow goods if there’s a problem.

So, what is GS1?

The ever burning question… what is GS1? Seeing as it’s mentioned so much within the supply-chain space, and how many blockchain companies claim compliance as a big thing, it’s amazing that there’s a lack of education on both the importance of it, and also the basics of how that works, and even benefits you as a consumer. It’s a silent, yet key part of the worlds supply chain data exchange. It is essentially the language of supply chain.

Nearly every product you purchase has a barcode (or GTIN-13 number). You might not know it, but nearly every single small to large company who creates a retail product has a special 8 digit number (GLN code) that forms part of every barcode that they create. Immediately, it gives a product an original source and an element of traceability. How cool is that. So simple, yet so effective.

Now imagine I, as a small business receive my order from my large international customer, and I am required to send a shipment using GS1 standard barcodes, this small piece of traceability gets elevated somewhat. GS1 have a barcode system called GS1–128, which put simply, is a bunch of barcodes, with a bunch of different data encoded.

Why would you do this? Well, it means that if I’m sending 6 pallets of product, I could put a document on each pallet in barcode form that shows exactly what product each pallet contains, the batch number of the product that is on the pallet, and it’s use by date, total weight etc etc. You get the point.

Here below is one of my old GS1–128 sheets that went on one of my pallets that I shipped. You’ll see a bunch of different barcodes and information. I’ll run through each number separately.

What is GS1

1) SSCC — This is really important. This code is a one-off code that is generated only within my GS1 account. I tell it what number SSCC code it will be for me using some predefined parameters, it will then combine that number with my location number, and then use an algorithm to create a checksum number. Each SSCC number is only to be used on one pallet or container, so for a 6-pallet shipment, I’d have 6 different numbers. Each pallet’s contents as a result would be tied to the SSCC number, making it easier to track within a warehouse, or if it is sent onwards to another destination. My business is too small to have a special stock management and tracking system (ERP), so I have a simple spreadsheet that I keep all this info on too just in case I have to refer to it in the future.

2) Content — This is simply the barcode of the product that I’m sending. You’ll notice that my barcode does not match my location prefix, but that is because we are quite new to using GS1. This will be changing soon.

3) This is the batch code of the product. If there’s a problem with it, it can be used to speak with the manufacturer of our product, and he in turn and trace the ingredients back to source.

4) Best before date on packaging.

5) Weight of the pallet.

6) You will notice on all the barcodes there are numbers within ( ) — This is how the standard is formed. Each number within the barcode represents a different piece of data — so, in this example (10) is the batch code. Every member of GS1 will use these same ( ) formats and across the board the numbers will always mean the same thing. If you think that most companies in the food product and healthcare industry are GS1 members, then you can see that any new solutions need to have some kind of conformity to this already excellent system.

Now this example I’ve given is the most basic of use cases. Just think about the complexity for the healthcare industry or for distributors dealing with many different companies’ products.

Instead of asking what is GS1, now we can move on to how it can be used to advantage in industry.

How does GS1 & blockchain come in to play?

Over the years’ there have been a number of scandals involving food. There was the horse meat scandal (which was found in beef products), and then the baby milk scandal in China. There are many counterfeit wines and tobacco products on the market too. Medical supplies (one of GS1’s areas of expertise) can also potentially suffer.

By utilising a system that can track a product using on and off blockchain solutions, it should be possible to create a supply chain with far more integrity than present.

Firstly, utilising a blockchain ledger to store the logistics data (and any other data necessary), there is the possibility to have an un-editable, and therefor more accountable system in place. Companies signing up for block-chain solutions are already most likely operating in an honest manner, so how can we attempt to weed out counterfeit or compromised products?

Tamper proof RFID tags are one such solution, enabling a consumer brand to attach a coded RFID tag to each product, box or pallet of product they put through the supply chain. If that product is then tampered with during the supply process there then should be the opportunity to understand where that likely happened.

From a consumer perspective, if there is no RFID tag present on a product they were expecting to have one (such as an expensive luxury good), it will automatically raise alarm bells, hopefully cutting out a large % of counterfeit goods as they will be shunned by the consumer, or more ideally removed from the chain earlier.

There are a number of other blockchain companies working with these RFID tags already, including VeChain, Waltonchain, and Wabi. RFID can be specific to usage requirements, so for instance they can have temperature monitoring for chilled/frozen goods, be tamper proof for products that need to remain sealed, or just be more simple like a QR code.

To find out more about their individual strategies and partnerships you can find out more on their own channels.

How does all this work for the real customer though? By real customer I’m talking about perhaps a large distribution company who deal with lots of shipments from all over the world every hour of the day, or a wholesale distributor of food products, or even a major supermarket chain who want to verify the sourcing of all their products. Dealing with multiple data sources for tracking would get difficult, so how can we utilise pre-existing ERP solutions whilst taking advantage of new block-chain tech?

Bear in mind that there would never be a sudden switch from all logistics solutions to suddenly solely use block-chain. It would be a slow process that would certainly need a method of storing and using data both on and off the chain for multiple applications.

Enter off-chain solutions

Imagine you could store all the logistic tracking data in a decentralised network but make use of both off-chain standards (like GS1) and then integrate blockchain based ledger data-integrity and other technology.

OriginTrail has done just that. They implemented the GS1 standard and then recently officially partnered with GS1 Slovenia, in order to develop a blockchain agnostic protocol that can act as a middle layer supply chain solution that allows for ease of data exchange, and then get it implemented across GS1 partners worldwide.

This means that their protocol can be applied to any blockchain (including private ones) to enable GS1 conformance. It can also integrate within a supply chain company’s current ERP solution. (ERP is basically a business’s internal process management software and it will deal with things like supply chain, but also other unrelated things — it depends on the company requirements).

The logistics data would be stored on their OriginTrail Decentralised Network, which is in turn written to blockchain ledger for safety and assurance. The logistics company may not even need to have a block-chain themselves. It makes integrating new ideas with old working methods far more easy-to-do. Asking multi-billion-dollar companies to simply change everything over-night is almost impossible so you have to make it easy and work with what they have.

what is gs1

This image shows the flow of data in a simple way. Most importantly you’ll see that nothing changes in the supply chain flow (far left column). It’s uninterrupted. The blockchain layer can consist of any blockchain (even multiple ones), including the other supply chain solutions mentioned earlier.) OriginTrail does not have their own block-chain and their token (TRAC) is an ERC-20 token meaning it is built on Etherium.

I mentioned middle layer solution above. This means that sitting on top of the OriginTrail protocol you could actually develop dApps, also knows as Decentralised Applications, (far right column of the image) for particular requirements if needed, such as the RFID idea mentioned previously, or to simply show compliance. As a specific use cases, you could verify whether a product is Organic Certified, or produced to particular manufacturing standards, such as BRC Certification (which is a requirement of many major food retailers), or even forensically verify authenticity, a project which have been under pilot in labs that include Unilever as one of their clients.

For those that don’t know, Unilever is one of the worlds ‘mega-brands’ that own many of the household names you know and love (or hate), like Marmite. For big companies like this, integrity of product is key, and keeping that over so many brands and products could be a tough task to achieve with efficiency.

On a consumer level you could even track your yoghurt back to source if you wanted to.

The most exciting use of Origin Trail in particular, is that it can be used as part of bespoke solutions. EVRYTHNG, who are a forward thinking tech company recently put together their own product traceability platform, but instead of entering the crypto space themselves, they instead build a platform using the best bits of tools already made, to help them make the perfect solution for their customer base, which includes some of the world’s biggest brands. Origin Trail are the key trust element of their platform. This is exactly why a protocol is an important tool.

What I’m getting at is that this is a fully flexible data verification protocol and service that would be capable of seamlessly integrating into the particular logistic needs whether a GS1 member or not.

You could operate your logistics of let’s say baby formula, to GS1 standards, with each product additionally tagged with RFID that is linked to a block-chain for assurance. You’re making the best of both worlds, and in the end the data is all written to ledger wherever it’s origination came from so it’s safe from tampering after an undesired event.

All the blockchain solutions mentioned make use of node staking. This is what allows it to be authentic. The nodes are in basic terms used to verify, sign and store data and are owned by 3rd parties who own a fixed number of tokens.

If you want to check out how to set up an Origin Trail node there’s a great post here.

To summarise, supply chain blockchain is to me one of the fastest moving, and closest to real-world use cases of the technology at the moment. We’re seeing real-world use cases put into action on a weekly basis if you look across the sector, and there simply isn’t that pace of development over any other area of blockchain. The fact that IBM are trying to do it says it all.

If you’re interested in finding out more about Origin Trail and exploring integrating it into your business, then follow the link to the Origin Trail website and touch base via the Trace Alliance.

Let’s get a conversation going, so if you have any questions or observations, please ask away in the comments.

2 Replies to “What is GS1? A supply chain Story: GS1, the Blockchain and the off-chain”

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