A hybrid IoT-Hadoop-blockchain architecture for decentralized MRV and carbon data governance

Accurate, transparent, and scalable Measurement, Reporting, and Verification (MRV) of greenhouse-gas emissions is foundational to credible climate governance, yet prevailing systems remain fragmented, low-frequency, and vulnerable to manipulation. This paper proposes a hybrid IoT–Hadoop–blockchain architecture that reconceptualizes carbon data as a continuously governed digital asset rather than a static compliance artifact. High-frequency operational data are collected through IoT infrastructures, stored and pre-processed in Hadoop for scalability and data sovereignty, and anchored on a Hyperledger Fabric consortium blockchain using Merkle-tree commitments to ensure immutability and traceability. A Carbon Data Interface Standard (CDIS) harmonizes heterogeneous data sources, while Decentralized Autonomous Organization (DAO)-based governance distributes authority across individual and institutional stakeholders. A Dynamic Authority Selection Mechanism (DASM) aligns participation in the consensus process with verifiable performance, institutionalizing a coopetitive model of data stewardship. The architecture further integrates with a public-chain value layer, enabling tokenization pathways and interoperability with emerging Web3 and Real-World Asset (RWA) climate-finance mechanisms. The results demonstrate how decentralized infrastructure, cryptographic verification, and polycentric governance can jointly improve data integrity, transparency, and market relevance in MRV systems. The paper concludes by outlining empirical pilot pathways and future research directions in AI-assisted verification, dynamic standardization, and climate-linked digital finance.