human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "towards blockchain based auditable storage and sharing of iot data"
  Abstract: Today the cloud plays a central role in storing, processing, and distributing data. Despite contributing to the rapid development of IoT applications, the current IoT cloud-centric architecture has led into a myriad of isolated data silos that hinders the full potential of holistic data-driven analytics within the IoT. In this paper, we present a blockchain-based design for the IoT that brings a distributed access control and data management. We depart from the current trust model that delegates access control of our data to a centralized trusted authority and instead empower the users with data ownership. Our design is tailored for IoT data streams and enables secure data sharing. We enable a secure and resilient access control management, by utilizing the blockchain as an auditable and distributed access control layer to the storage layer. We facilitate the storage of time-series IoT data at the edge of the network via a locality-aware decentralized storage system that is managed with the blockchain technology. Our system is agnostic of the physical storage nodes and supports as well utilization of cloud storage resources as storage nodes.

Connected through hyperedge HE-1 (induced by source paper "iot expunge implementing verifiable retention of iot data"):
  with members:
    - "keeping the smart home private with smart er iot traffic shaping"
    - "fundamental limits of caching"

Connected through hyperedge HE-2 (induced by source paper "a survey on consensus mechanisms and mining strategy management in blockchain networks"):
  with members:
    - "decentralization in bitcoin and ethereum networks"
    - "information and communications technologies for sustainable development goals state of the art needs and perspectives"
    - "a scale out blockchain for value transfer with spontaneous sharding"
    - "a survey on security and privacy issues of bitcoin"
    - "on cyber risk management of blockchain networks a game theoretic approach"
    - "scaling nakamoto consensus to thousands of transactions per second"
    - "competitive data trading in wireless powered internet of things iot crowdsensing systems with blockchain"
    - "blockchained on device federated learning"

Connected through hyperedge HE-3 (induced by source paper "towards blockchain based multi agent robotic systems analysis classification and applications"):
  with members:
    - "a reference architecture for smart and software defined buildings"
    - "interacting with the internet of things using smart contracts and blockchain technologies"
    - "controlling robots using artificial intelligence and a consortium blockchain"
    - "blockchain solutions for multi agent robotic systems related work and open questions"
    - "towards the internet of robotic things analysis architecture components and challenges"
    - "robochain a secure data sharing framework for human robot interaction"
    - "an architecture for distributed ledger based m2m auditing for electric autonomous vehicles"
    - "smart contracts for multiagent plan execution in untrusted cyber physical systems"

Connected through hyperedge HE-4 (induced by source paper "gdpr compliant personal data management a blockchain based solution"):
  with members:
    - "a survey on consensus mechanisms and mining strategy management in blockchain networks"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "a blockchain based approach for data accountability and provenance tracking"
    - "blockbench a framework for analyzing private blockchains"
    - "untangling blockchain a data processing view of blockchain systems"
    - "xft practical fault tolerance beyond crashes"
    - "ipfs content addressed versioned p2p file system"

Connected through hyperedge HE-5 (induced by source paper "on the ethereum blockchain structure a complex networks theory perspective"):
  with members:
    - "likestarter a smart contract based social dao for crowdfunding"
    - "towards blockchain enabled wireless mesh networks"
    - "a blockchain based flight data recorder for cloud accountability"
    - "smart contract slas for dense small cell as a service"
    - "a blockchain based approach for data accountability and provenance tracking"
    - "highly intensive data dissemination in complex networks"
    - "simulation of the internet of things"

Connected through hyperedge HE-6 (induced by source paper "security services using blockchains a state of the art survey"):
  with members:
    - "a survey on security and privacy issues of bitcoin"
    - "blockchain based trust authentication for decentralized sensor networks"
    - "using blockchain and smart contracts for secure data provenance management"
    - "a blockchain based approach for data accountability and provenance tracking"
    - "blockbench a framework for analyzing private blockchains"
    - "bitcoin ng a scalable blockchain protocol"

Connected through hyperedge HE-7 (induced by source paper "a distributed ledger based infrastructure for smart transportation system and social good"):
  with members:
    - "likestarter a smart contract based social dao for crowdfunding"
    - "on the ethereum blockchain structure a complex networks theory perspective"
    - "idmob iot data marketplace on blockchain"
    - "a blockchain based flight data recorder for cloud accountability"
    - "ipfs content addressed versioned p2p file system"

Connected through hyperedge HE-8 (induced by source paper "towards secure and decentralized sharing of iot data"):
  with members:
    - "privacy preserving and cost optimal mobile crowdsensing using smart contracts on blockchain"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "edgechain an edge iot framework and prototype based on blockchain and smart contracts"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.DC(Distributed, Parallel, and Cluster Computing)