Special Issues

Blockchains publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue polices and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Feature Papers in Blockchains
edited by and
submission deadline 31 Dec 2024 | 17 articles | Viewed by 53639 | Submission Open
Keywords: blockchain and distributed ledger technology implementation; blockchain and cryptography; blockchain and digital currency; blockchain in finance; blockchain in management; bitcoin and ethereum; new applications of blockchain; emerging technologies and developments of blockchain; blockchain theory; blockchain for data exchange; NFT (non-fungible token); new architecture; framework; or models of blockchain; security and privacy in blockchain; blockchain advances in 6G network; smart contract methods; blockchain-based business model; data governance in blockchain; blockchain and secure critical infrastructure; blockchain in metaverse; cross chain techniques; attacks and threats on blockchain
Key Technologies for Security and Privacy in Web 3.0
edited by Jingyu Hua and Na Ruan
submission deadline 31 Jan 2025 | 4 articles | Viewed by 6377 | Submission Open
Keywords: blockchain security; decentralized identity; secure smart contracts; decentralized trust management; privacy preservation in Web 3.0; DeFi (decentralized finance); NFT (non-fungible token); cryptography for Web 3.0; incentive mechanism for Web 3.0; machine learning in Web 3.0; secure transaction verification in Web 3.0.
Security and Privacy Challenges in Cross-Chain Systems
edited by , Licheng Wang, Xiangyun Tang, Jianan Hong and
submission deadline 30 Sep 2025 | Viewed by 69 | Submission Open
Keywords: secure transaction protocols in cross-chain environments; privacy-preserving cross-chain communication methods; cross-chain identity authentication and access control technologies; defence against malicious attack methods in cross-chain systems; design and implementation of scalable and secure cross-chain frameworks; secure and efficient consensus mechanism in cross-chain systems; regulation and auditing of cross-chain transactions and interactions; security and functionality of cross-chain smart contracts
Next Generation Blockchain, Information Security and Soft Computing for Future IoT Networks
edited by
submission deadline 31 Dec 2025 | Viewed by 432 | Submission Open
Keywords: blockchain; information security; soft computing; IoT; AI; UAVs; NLP
Blockchain-Enabled Distributed Machine Learning
edited by Xiangyun Tang, Tao Zhang, Li Duan, Li Chao and Yijing Lin
submission deadline 31 Dec 2025 | Viewed by 274 | Submission Open
Keywords: blockchain; distributed machine learning; secure smart contracts for distributed machine learning; data privacy and security; data integrity and confidentiality; decentralized identity and authentication; blockchain-based federated learning; resource management in distributed machine learning
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