Bit Commitment for Lottery and Auction on Quantum Blockchain
This work addresses secure digital transactions for users in blockchain systems, but it is incremental as it applies existing quantum techniques to specific applications.
The paper tackles the problem of designing secure and decentralized lottery and auction protocols by proposing quantum blockchain-based solutions that achieve unconditional security, randomness, and privacy, with practical feasibility using current technology.
This paper propose a protocol for lottery and a protocol for auction on quantum Blockchain. Our protocol of lottery satisfies randomness, unpredictability, unforgeability, verifiability, decentralization and unconditional security. Our protocol of auction satisfies bid privacy, posterior privacy, bids' binding, decentralization and unconditional security. Except quantum Block-chain, the main technique involved in both protocols is quantum bit commitment. Since both quantum blockchain and quantum bit commitment can be realized by the current technology, our protocols are practically feasible.