BlindHub: Bitcoin-Compatible Privacy-Preserving Payment Channel Hubs Supporting Variable Amounts
Published in 44th IEEE Symposium on Security and Privacy (IEEE S&P 2023), San Francisco, CA, USA, 2023
Recommended citation: Xianrui Qin, Shimin Pan, Arash Mirzaei, Zhimei Sui, Oğuzhan Ersoy, Amin Sakzad, Muhammed F. Esgin, Joseph K. Liu, Jiangshan Yu, and Tsz Hon Yuen. “BlindHub: Bitcoin-Compatible Privacy-Preserving Payment Channel Hubs Supporting Variable Amounts.” In 44th IEEE Symposium on Security and Privacy (IEEE S&P 2023), pp. 2462–2480, 2023. https://doi.org/10.1109/SP46215.2023.10179427
BlindHub is the first Bitcoin-compatible privacy-preserving payment-channel hub supporting variable payment amounts while maintaining relationship anonymity. It introduces BlindChannel, blind adaptor signatures, and flexible blind conditional signatures to support practical private conditional payments.