• Cryptocurrency
• Cryptographic hash function
• Cryptography
• Distributed ledger
• Distributed consensus algorithm
• Smart contracts
• Hyperledger Fabric
• Blockchain security
• Public blockchain networks
• Private blockchain networks
• Permissioned blockchain networks
• Consortium blockchains
• Blockchain for social media
• Blockchain and artificial intelligence (AI)
• Applications of IoT and blockchain
• Blockchain for social good
• Blockchain for business

• Theories of blockchain
• Distributed consensus
• Fault tolerance mechanisms
• Security, privacy and trust of blockchain
• Security issues & Attacks on blockchain based systems
• Protocols & algorithms based on blockchain
• Blockchain related data structures
• Blockchain for IoT

 •Blockchain for cyber physical systems
• Blockchain for edge and cloud computing
• Blockchain for social media
• Blockchain for supply chain management
• Bolckchain for crowdsourcing and crowdsensing
• Blockchain for 5G/6G
• New applications with blockchain techniques
• Anonymity and privacy issues and measures to enhance them
• New applications using or built on top of blockchains
• Atomic Swapping Big Data and blockchain technology
• Cryptography, scripting/smart contract language etc.
• Consensus protocols for blockchains
• Forensics and monitoring
• Formal Verification of Blockchain Protocols, Smart Contracts
• Fraud detection and financial crime prevention Identity, Identification and trust in blockchain systems
• Internet of things (IoT) and blockchain technology
• Off-chain payment/state channels
• Peer-to-peer networks
• Permissioned and permissionless blockchains
• Proof-of-work, -stake, -burn, and virtual mining
• Real-world measurements and metrics
• Scalability and scalable services for blockchain systems
• Smart Contract Programming Languages and VM's
• Security of Blockchain Protocols