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We welcome high-quality papers that describe original and unpublished research advancing the state of the art in ubiquitous intelligence and computing.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