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: "verifying the consistency of remote untrusted services with commutative operations"
  Abstract: A group of mutually trusting clients outsources a computation service to a remote server, which they do not fully trust and that may be subject to attacks. The clients do not communicate with each other and would like to verify the correctness of the remote computation and the consistency of the server's responses. This paper first presents the Commutative-Operation verification Protocol (COP) that ensures linearizability when the server is correct and preserves fork-linearizability in any other case. All clients that observe each other's operations are consistent, in the sense that their own operations and those operations of other clients that they see are linearizable. Second, this work extends COP through authenticated data structures to Authenticated COP, which allows consistency verification of outsourced services whose state is kept only remotely, by the server. This yields the first fork-linearizable consistency verification protocol for generic outsourced services that (1) relieves clients from storing the state, (2) supports wait-free client operations, and (3) handles sequences of arbitrary commutative operations.

Connected through hyperedge HE-1 (induced by source paper "rollback and forking detection for trusted execution environments using lightweight collective memory"):
  with members:
    - "don t trust the cloud verify integrity and consistency for cloud object stores"

Connected through hyperedge HE-2 (induced by source paper "don t trust the cloud verify integrity and consistency for cloud object stores"):
  with members:
    - "efficient authenticated data structures for graph connectivity and geometric search problems"

Connected through hyperedge HE-3 (induced by source paper "verifying the consistency of remote untrusted services with conflict free operations"):
  with members:
    - "don t trust the cloud verify integrity and consistency for cloud object stores"
    - "fork sequential consistency is blocking"

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)