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Blockchain in Supply Chains: Revolutionizing Traceability and Transparency

21 November 2023

By Andrew Drue



Supply chains are becoming increasingly complex in the modern, globalized economy. Products often travel through multiple countries, companies, and facilities before reaching the end consumer. This complexity creates several challenges related to traceability, transparency, efficiency, and sustainability.
Blockchain technology offers innovative solutions to many of these supply chain challenges. As an immutable, decentralized ledger, blockchain provides unprecedented visibility into supply chain data. It enables all parties to track products in near real-time as they move through the chain. Blockchain also ensures data integrity, mitigates fraud, facilitates automation, and promotes sustainability.
This article will explore how blockchain transforms traceability and transparency across global supply chains. We’ll examine key use cases, benefits, and real-world examples of blockchain implementation. Let’s dive in!

The Challenges of Modern Supply Chains


Global supply chains now involve many entities, systems, and borders. This leads to:
  • Lack of transparency: Limited visibility into upstream and downstream supply chain operations

  • Traceability issues: Difficulty tracking provenance, movements, and conditions of products

  • Inefficiencies: Excessive paperwork, manual processes, delays at borders, and more

  • Fraud risks: Counterfeits, gray market diversion, theft, and cybercrime

These challenges erode trust between suppliers, vendors, and customers. They also expose firms to quality control issues, shipment delays, and compliance risks.
Many companies still rely on paper-based records to track supply chain transactions. But papers get lost, damaged, or deliberately altered. There is no unified data trail across disparate systems involving freight forwarders, customs brokers, carriers, and distributors.
Blockchain overcomes these problems with an immutable, shared record of supply chain events. Cryptography, consensus mechanisms, and smart contracts enable product tracking from source to shelf.

Blockchain: A Disruptive Solution


Blockchain is a distributed digital ledger synchronized across a business network. All participants maintain an identical, tamper-proof record of transactions. This enables transparency, accountability, process integrity, and efficiency.
Key attributes make blockchain ideal for enhancing supply chain traceability:
Decentralization - No central authority controls the network or data
Immutability - Transactions cannot be altered after recording
Provenance - Provides a chain of custody for asset movements
Consensus - Network participants validate transactions
Smart contracts - Self-executing code automates processes
Security - Encryption and permissions protect sensitive data
With blockchain, supply chain events like manufacturing, shipping, receiving, and payments get recorded in shared ledgers. This creates an authoritative history of an asset from origin to destination.

Case Study: Tracking Food Products


In 2016, Walmart began testing blockchain to track food products. They partnered with IBM to develop a platform called Food Trust. It aimed to rapidly pinpoint issues like contamination to improve recalls.
The blockchain collects data as produce travels through the supply chain. Farmers upload details like crop treatments, batch numbers, storage temperatures, and shipping info. Suppliers, CPG firms, distributors, and retailers append tracking data as custody changes.
If a safety issue emerges, the blockchain reveals where the affected items originated, what other batches might be impacted, and where all those batches were sent. This mitigates risk by containing the problem. It also assures customers that unaffected batches remain safe, thereby preventing unnecessary waste.
Food Trust delivered a farm-to-store view across complex supply webs. It reduced tracking time from days to seconds, even allowing consumers to scan QR codes for provenance info. The blockchain is now being used by major retailers like Carrefour and Albertsons to revamp food transparency.

Beyond Traceability: Embracing Sustainability


Beyond enhancing traceability, blockchain enables supply chains to verify sustainability claims and credentials. Consumers increasingly demand ethical sourcing and production practices.
With blockchain, suppliers can showcase credentials like organic certifications, fair trade audits, and carbon footprint data. This provides external validation of environmental and social responsibility. It also gives procurement teams verifiable metrics for selecting ethical vendors.
For example, the fashion brand Martine Jarlgaard traces the supply chain of clothing materials on a blockchain. This communicates authenticity for sustainability assertions to conscious consumers.

Embracing the Future of Supply Chain Management


The World Economic Forum predicts that 10% of global GDP will be stored on blockchains by 2027. Supply chain management is among the most promising use cases for this technology.
Leading analysts predict over 50% of large enterprises will adopt blockchain for supply chain operations by 2023. Prominent retailers, manufacturers, shipping carriers, and freight brokers are already piloting and deploying blockchain POCs.
As the digital and physical worlds converge through IoT sensors, big data analytics, and AI, blockchain will serve as the backbone for next-generation supply networks. It will integrate fragmented systems to enable seamless data sharing and automation.
Emerging supply chain blockchain platforms include:
TradeLens - Logistics blockchain jointly developed by Maersk and IBM Food Trust - IBM network for food traceability and accountability  OriginTrail - Platform for supply chains requiring high transparency Provenance - Tracks provenance and sustainability attributes of goods Skuchain - Emphasizes blockchain integration for enterprise systems



In summary, blockchain delivers game-changing transparency, security, and efficiency for global supply chains. Leading enterprises are already leveraging blockchain to transform product traceability, combat fraud, facilitate recalls, and verify sustainability claims. Consumer demand for ethical sourcing, combined with technology advances, will drive rapid adoption across industries. Blockchain enables the transparent, trusted, and timely flow of goods worldwide - building integrity from manufacturer to merchant.

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