1. 1e96a1b27a6cb85df68d728cf3695b0c46dbd44d: Filecoin: A cryptocurrency operated file storage network (2014)
2. Apache hadoop. http://hadoop.apache.org/
3. Ali, M., Nelson, J., Shea, R., Freedman, M.J.: Blockstack: A global naming and storage system secured by blockchains. https://www.zurich.ibm.com/dccl/paper-s/nelson_dccl_slides.pdf (2016)
4. Ali, M., Nelson, J., Shea, R., Freedman, M.J.: Blockstack: A global naming and storage system secured by blockchains (2016)
5. Armknecht, F., Bohli, J.M., Karame, G.O., Liu, Z., Reuter, C.A.: Outsourced proofs of retrievability. In: ACM Sigsac conference on computer and communications security, pp. 831–843 (2014)