Lockcoin: a secure and privacy-preserving mix service for bitcoin anonymity
This addresses privacy concerns for Bitcoin users by providing a scalable and compatible mix service, though it appears incremental as it builds on existing cryptographic techniques.
The authors tackled the problem of Bitcoin anonymity by proposing Lockcoin, a secure and privacy-preserving mix service that uses blind signatures and multisignature schemes to prevent address linking, with a prototype on the Bitcoin test network showing efficiency.
We propose Lockcoin, a secure and privacy-preserving mix service for bitcoin anonymity. We introduce mix servers to provide mix service for user to prevent attackers linking the input address with output address by using blind signature shceme, multisignature scheme. Lockcoin provides anonymity, scalability, bitcoin compatibillity, theft impossibility and accountability. We have proposed a prototype of Lockcoin based on bitcoin test network, experimental results show that our solution is efficient. Lockcoin's source codes are released on github.com/Northeastern-University-Blockchain/Lockcoin.