Aug 2026· American Journal of AI Cyber Computing Management· Vol 6, pp. 671-678· 0 citations· 29 references
TL;DR
PriChain gives data owners the authority to manage who may access and alter their on-chain data, guaranteeing that redaction can only be carried out by authorized users while maintaining data confidentiality.
Abstract
Redactable blockchain, which provides decentralization, traceability, and transparency while permitting permitted changes to on-chain data, has become a promising technology in recent years. Despite their benefits, existing redactable blockchain systems are limited in their practical use by issues including significant communication overhead and data privacy breaches. This study presents PriChain, a fine-grained redactable blockchain technology for decentralized contexts that preserves privacy in order to address these problems. PriChain gives data owners the authority to manage who may access and alter their on-chain data, guaranteeing that redaction can only be carried out by authorized users while maintaining data confidentiality. Through the use of attributebased encryption with several authorities, PriChain guarantees resistance to unwanted cooperation or collusion and permits exact access control. When compared to traditional techniques, the framework dramatically lowers communication and storage overhead. PriChain is a reliable and useful option for blockchain applications that prioritize privacy as security analysis demonstrates that it is impervious to chosen-plaintext attacks.
PEACE is presented, an authentication mechanism for blockchains that combines the practicality of traditional Web systems with decentralization and privacy-preservation, building on a recent groundbreaking zkLogin protocol.
Stefan Dziembowski, Shahriar Ebrahimi, Paweł K. ̨edzior et al.· International Conference on...· 0 citations
The authors research the adoption of blockchain-based identity management within e-Governance sites and shows enhanced security, less identity fraud, and better data security, so there is a possibility of scalability and resilient e-Governance applications.
J. Nováková, Adi Lestari· International Journal of Mod...· 0 citations
Blockchain transparency poses a barrier to enterprise adoption in domains requiring data privacy. We introduce
private data collections
, a mechanism for permissioned blockchains that decouples private data storage from the replicated ledger: private data is shared only among authorized peers, while cryptographic hashes are recorded on-chain for tamper-evidence and serializability verification. Our key theoretical contribution is
blind validation
: we prove that on-chain hashes form a
conflict-complete proxy
for private state—optimistic concurrency control (OCC) based serializability checks on hashed state detect exactly the same conflicts as checks on the underlying data, enabling the entire network to verify private transactions without accessing private data. A three-component dissemination protocol—proactive push, reactive pull, and background reconciliation—ensures data availability. The design targets any blockchain following the simulate-order-validate-commit protocol. We implement it in Hyperledger Fabric with only 3–14% throughput overhead. The mechanism has been in production since Fabric v1.2, with deployments spanning food traceability, pharmaceuticals, aerospace, financial services, and global shipping.
Senthilnathan Natarajan, Manish Sethi, David Enyeart et al.· Proceedings of the VLDB Endo...· 0 citations
Blockchain technology has emerged as a powerful solution for improving the security, transparency, and efficiency of financial transactions. Unlike traditional financial systems that depend on centralized intermediaries, blockchain uses decentralized distributed ledgers, cryptographic security, consensus mechanisms, and immutable records to ensure trust and data integrity. This study examines the role of blockchain in securing financial transactions and explores its core components, including distributed ledgers, cryptographic hashing, consensus protocols, smart contracts, and decentralized networks. The research analyzes how blockchain mitigates security threats such as fraud, double spending, identity theft, unauthorized access, and transaction tampering. It also investigates applications in digital payments, cross-border remittances, banking, trade finance, cryptocurrencies, and decentralized finance (DeFi). A blockchain-enabled financial transaction framework is proposed and evaluated using metrics such as security, transparency, scalability, efficiency, and fraud prevention. The findings indicate that blockchain significantly enhances transaction security and transparency while reducing costs and processing times. Although challenges such as scalability, regulatory issues, interoperability, and energy consumption remain, blockchain demonstrates strong potential to transform modern financial systems and support the development of secure, efficient, and decentralized financial ecosystems.
Kenji Sato, Aiko Yamamoto· International Journal of Com...· 2 citations
This paper proposes EPPCDS, an efficient privacy-preserving cloud data sharing scheme with blockchain-assisted access control and periodic integrity checking, and demonstrates that it outperforms representative existing schemes in terms of policy creation, policy update, and data access efficiency.
The rapid evolution of digital payment technologies has highlighted critical challenges in ensuring data security, transparency, and compliance across centralized tokenization systems. Traditional models such as those used by EMVCo and major card networks rely on Token Service Providers (TSPs) and token vaults, which, while effective at masking Primary Account Numbers (PANs), still suffer from single points of failure, limited auditability, and potential privacy risks. Fully decentralized blockchain-based payment models, on the other hand, often face latency, scalability, and regulatory compliance challenges that hinder real-world adoption. This paper proposes a blockchain-based distributed tokenization model that decentralizes the tokenization and validation phases while maintaining centralized authorization and settlement through existing ISO 8583 payment rails. Unlike traditional centralized tokenization architectures that rely on a central TSP for token management, and fully decentralized approaches that migrate payment processing onto the blockchain, the proposed model selectively decentralizes token lifecycle functions while preserving compatibility with existing payment infrastructure. The model introduces a two-layer architecture: an on-chain layer for token creation, validation, and consumption using smart contracts deployed on the Ethereum network, and an off-chain layer for detokenization, authorization, and regulatory compliance through the issuer-side Token resolution service (TRS) and Token Vault. Experimental results show a 65–70% reduction in gas consumption and lower transaction latency compared to a fully on-chain reference model. These improvements stem from the model’s hybrid structure, which minimizes state changes and optimizes network resource utilization. The findings indicate that the proposed model enhances security, interoperability, and operational efficiency while supporting regulatory compliance and blockchain-based token lifecycle management within real-time payment workflows, while keeping latency-critical authorization and settlement off-chain.
Omniah Abdullah Al Ibrahim, Suhair Alshehri· International Journal of Adv...· 0 citations
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