IEEE Blockchain-2025 will be held in Zhengzhou, Henan, China, October 30- November 02, 2025. The goal of this conference is to promote community-wide discussion for identifying advanced applications, technologies and theories for blockchain. We seek submissions of papers that invent novel techniques, investigate new applications, introduce advanced methodologies, propose promising research directions and discuss approaches for unsolved issues.

As a promising technique to achieve decentralized consensus, blockchain has been successfully applied into digital currency, e.g., bitcoin, for serving as a public ledger for transactions. Its secure design for supporting a distributed computing system with high fault tolerance is attracting wide attention all over the world. Blockchain has a great potential to create new foundations for our socio-economic systems by efficiently establishing trust among people and machines, reducing cost, and increasing utilization of resources. On one hand, blockchain will play an important role for secure decentralization in such emerging fields as Internet of Things, Cyber Physical Systems, edge computing, social networking, crowdsourcing and next generation wireless communications, and even more other fields. On the other hand, its advance should be further evolved in terms of scalability, security, privacy, efficiency, flexibility, availability, real decentralization and high dependability.

We welcome high-quality papers that describe original and unpublished research advancing the state of the art in ubiquitous intelligence and computing. Topics for submissions include but are not limited to the following:

Theories of blockchain and distributed ledger technology
New blockchain architecture
Distributed consensus and fault tolerance mechanisms
Security, privacy and trust of blockchain and distributed ledger
Cross-chain and off-chain technology
Attacks and vulnerabilities of blockchain
Blockchain scalability and performance optimization
Simulation and performance evaluation techniques
Smart contract and chain code
Applications and services based on blockchain
Protocols and algorithms based on blockchain
Blockchain in the Internet of things (IoT)
Blockchain in cyber physical systems
Blockchain in social networking
Blockchain in supply chain management
Blockchain in agriculture
Blockchain in connected and autonomous vehicles
Blockchain in crowdsourcing and crowdsensing
Blockchain in edge and cloud computing
Blockchain in next generation communications and networks
Blockchain and Cryptocurrency
Blockchain and artificial intelligence
Blockchain and game theory
Blockchain and industry 4.0
Redactable blockchain