Paper: Expert perspectives on blockchain in the circular economy: A Delphi study with industry specialists Authors: Giulio Caldarelli Date: 2024 Estimated Reading Time: 30 minutes
This paper explores the potential and challenges of integrating blockchain technology within the circular economy (CE) by engaging with eleven distinguished blockchain experts. Utilizing the Delphi method, the study aims to achieve a consensus on the feasibility and outcomes of such integrations. The findings reveal a nuanced perspective: while some applications in the circular economy may face significant hurdles, others could prove effective under certain conditions. The study underscores the importance of appropriately designed tokenomics and a sufficient level of digitalization for successful blockchain integration in CE practices. However, the complete disintermediation of circular practices through blockchain is deemed less feasible due to its reliance on external data providers.
Core Insights:
- Blockchain has potential in incentivizing CE practices through token issuance and enhancing green supplier selection by ensuring transparent and immutable historical performance data.
- Experts are skeptical about blockchain's utility in monitoring green production and prolonging product life due to the reliance on IoT systems for data collection and the inherent manipulation risks.
- The use of blockchain to reduce transaction costs and intermediaries reveals a paradox, with technical and operational expenses often outweighing potential cost savings.
- The concept of digital product passports (DPP) on the blockchain faces practical challenges, including data credibility, high operational costs, and the complexity of ensuring global access or restricted privacy.
- The 'stapling problem'-securely linking digital records to physical products-remains a significant hurdle, particularly in the authentication of recycled products and green production management.
The integration of blockchain technology within the circular economy (CE) offers both opportunities and challenges. The core advantage of blockchain lies in its ability to provide transparency, immutability, and security for recorded data. These attributes are particularly valuable in scenarios where trust between parties is limited, as blockchain can ensure the integrity of transactions and historical performance data. However, the practical application of blockchain in CE practices is complex and multifaceted, often requiring significant digital infrastructure and reliable data inputs.
One of the primary areas where blockchain shows promise is in incentivizing circular behavior through token issuance. By creating a system where green actions, such as recycling, are rewarded with tokens, blockchain can encourage more sustainable practices. However, designing an economically viable and universally compatible incentive system is challenging. The success of such a system hinges on the appropriate economic model and effective management. Micro-communities issuing their own tokens for specific actions might offer a practical solution, but the trust in these communities and the economic model remains uncertain.
Blockchain's potential in enhancing supplier selection is another area of positive consensus. By storing a company's reputation on a decentralized database, blockchain can promote transparency and reduce fraudulent behavior. This application is particularly relevant for industries where historical performance data is crucial for decision-making. However, the implementation of private blockchains, while potentially more suitable, faces significant challenges such as interoperability with legacy systems, finding skilled professionals, and high setup costs.
Conversely, the use of blockchain in managing green production and prolonging product life is met with skepticism. Experts highlight the reliance on IoT systems for data collection, which are often prone to manipulation. Blockchain alone cannot ensure the accuracy and reliability of data inputs, limiting its effectiveness in these applications. The 'stapling problem'-the difficulty of securely linking digital records to physical products-further complicates the use of blockchain for product authentication and lifecycle management. This issue is particularly pronounced in scenarios where products undergo manipulation or transformation, such as in recycling and reuse phases.
The proposal of digital product passports (DPP) on the blockchain encapsulates the broader challenges of blockchain integration. While technically feasible, the practical benefits are constrained by the costs of blockchain operations and the credibility of stored information. Ensuring data integrity and selecting an appropriate blockchain platform (public vs. private) are significant hurdles. Moreover, the effectiveness of DPPs in promoting recycling behaviors remains questionable, as human actions often drive such behaviors more than information availability.
Experts also raise concerns about the potential for blockchain to reduce transaction costs and intermediaries. While theoretically capable of streamlining processes and lowering fees, the reality often shows increased costs due to the technical and operational expenses associated with blockchain systems. This is particularly evident in non-financial sectors where traditional systems and intermediaries are already efficient.
In summary, while blockchain technology holds promise for certain applications within the circular economy, its practical implementation is fraught with challenges. The success of blockchain integration in CE practices depends on the appropriate design of tokenomics, reliable data inputs, and a sufficient level of digitalization. Future research should focus on addressing these challenges, exploring the specific conditions under which blockchain can effectively support circular economy practices, and providing clear guidelines for managers and investors. This study provides a comprehensive foundation for such research, highlighting both the potential and the limitations of blockchain technology in the circular economy.
