The emergence of Bitcoin and decentralized cryptocurrencies, and their fundamental innovation---blockchains---have allowed for entities to trade and interact without a central trusted third party. This has led to a captivating research activity in multiple domains and across different venues, such as top security and distributed systems conferences and journals, as well as a vibrant startup rush on this new technology.

The fifth IEEE Security and Privacy on the Blockchain (S&B) workshop aims to unite interested scholars as well as industrial members from all relevant disciplines who study and work in the space of blockchains. We solicit previously unpublished papers offering novel contributions in both cryptocurrencies and wider blockchain research. Papers may present advances in the theory, design, implementation, analysis, verification, or empirical evaluation and measurement of existing systems. Papers that shed new light on past or informally known results by means of sound formal theory or through empirical analysis are welcome. Suggested contribution topics include (but are not limited to) empirical and theoretical studies of:

Adoption of blockchains in developing countries
Anonymity and privacy-enhancing technologies
Applications using or built on top of blockchains
Atomic Swapping
Bitcoin, Ethereum, Monero, Zcash protocol, other coins and extensions (cryptography, scripting/smart contract language etc.)
Business models for blockchains (both new and new integrations into existing)
Case studies (e.g., of adoption, attacks, forks, scams etc.)
Censorship
Consensus protocols for blockchains
Cryptocurrency adoption effects (eg economic impact, transition dynamics)
Decentralized Applications (Exchanges, Mining Pools, Trading Platforms)
Economic and monetary aspects
Economics and game theory of mining
Forensics and monitoring
Formal verification of blockchain protocols and Smart Contracts
Fraud detection and financial crime prevention
Governance
Identity, Identification and trust in blockchain systems
Interfacing fiat and cryptocurrencies
Intermediates in different industries and their future
Internet of things (IoT) and blockchains
Legal and policy implications of Smart Contracts
Legal, ethical, and societal aspects of virtual currencies
Legal status of crowdfunding for new blockchain projects (ICO/TGE)
Novel applications of the blockchain
Off-chain payment channels
Peer-to-peer broadcast networks/topologies
Permissioned (e.g. Hyperledger) and permissionless (e.g. Bitcoin) blockchains
Proof-of-work, and its alternatives (e.g., proof-of-stake, proof-of-burn, and virtual
mining)
Real-world measurements and metrics
Regulation and law enforcement
Relation to other payment systems
Scalability and scalable services for blockchain systems
Security of blockchains
Smart Contract Programming Languages and VM's
Transaction graph analysis
Usability and user studies

This topic list is not meant to be exhaustive. S&B is interested in all aspects of the blockchain research relating to security and privacy. Papers that are considered out of scope may be rejected without full review. We encourage submissions that are "far-reaching" and "risky."