Welcome to the 9th IEEE International Conference on Blockchain 2026 (Blockchain 2026).

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We welcome high-quality papers that describe original and unpublished research advancing the state of the art in ubiquitous intelligence and computing.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

• 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 vehiclesBlockchain 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