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\cite{bookmark1} propose a secure validation method and a pricing strategy, and integrate them into the incentive mechanism, though a game theoretical analysis.

\cite{bookmark2} propose a blockchain-based security architecture for distributed cloud storage.

\cite{zh1} propose blockchain incentive mechanism in crowdsensing applications

\cite{zh2} develop blockchain-based digital content distribution system to safeguard the rights holder

@inproceddings{bookmark1,
  title={A Blockchain Based Truthful Incentive Mechanism for Distributed P2P Applications},
  author={ Yunhua He, Hong Li, Xiuzhen Cheng, Yan Liu, Chao Yang, Limin Sun},
  booktitle="IEEE Access",
  volumes= "6",
  month="apr",
  year="2018",
  pages="27324-27335"
}

@article{bookmark2,
  title={Block-secure: Blockchain based scheme for secure P2P cloud storage},
  author={Jiaxing Li,Jigang Wu,Long Chen},
  booktitle="Information Sciences",
  volumes={465},
  year="2018",
  month="oct",
  pages="219-231",
}

@inproceddings{zh1,
  title:{A Blockchain Based Privacy-Preserving Incentive Mechanism in Crowdsensing Applications},
  author:{JINGZHONG WANG, MENGRU LI , YUNHUA HE, HONG LI, KE XIAO,CHAO WANG },
  volumes={6},
  booktitle="IEEE Access",
  year={2017},
  month={jan},
  pages={17545-17556},

}

@inproceddings{zh2,
  title:{The Blockchain-based Digital Content Distribution System},
  author:{Jay Kishigami,Shigeru Fujimura, Hiroki Watanabe, Atsushi Nakadaira, and Akihiko Akutsu},
  journal:{2015 IEEE Fifth International Conference on Big Data and Cloud Computing},
  year:{2015},
  month:{aug},
}