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: "the consensus number of a cryptocurrency"
  Abstract: Many blockchain-based algorithms, such as Bitcoin, implement a decentralized asset transfer system, often referred to as a cryptocurrency. As stated in the original paper by Nakamoto, at the heart of these systems lies the problem of preventing double-spending ; this is usually solved by achieving consensus on the order of transfers among the participants. By treating the asset transfer problem as a concurrent object and determining its consensus number, we show that consensus is not necessary to prevent double-spending. We first consider the problem as defined by Nakamoto, where only a single process---the account owner---can withdraw from each account. Safety and liveness need to be ensured for correct account owners, whereas misbehaving account owners might be unable to perform transfers. We show that the consensus number of an asset transfer object is 1. We then consider a more general k-shared asset transfer object where up to k processes can atomically withdraw from the same account, and show that this object has consensus number k. We first establish these these results in the context of shared memory with benign faults, in order to properly understand the level of difficulty of the asset transfer problem. Then, we translate our result in the more practically relevant message passing setting with Byzantine players. We describe an asynchronous Byzantine fault-tolerant asset transfer implementation that is both simpler and more efficient than state-of-the-art consensus-based solutions. Our results are applicable to both the permissioned (private) and permissionless (public) setting, as normally their differentiation is hidden by the abstractions on top of which our algorithms are based.

Connected through hyperedge HE-1 (induced by source paper "dynamic byzantine reliable broadcast technical report"):
  with members:
    - "at2 asynchronous trustworthy transfers"

Connected through hyperedge HE-2 (induced by source paper "formal verification of blockchain byzantine fault tolerance"):
  with members:
    - "on the correctness of egalitarian paxos"
    - "correctness analysis of ibft"
    - "dissecting tendermint"
    - "the latest gossip on bft consensus"
    - "analysis of the xrp ledger consensus protocol"
    - "evaluating the red belly blockchain"
    - "sbft a scalable decentralized trust infrastructure for blockchains"
    - "correctness and fairness of tendermint core blockchains"

Connected through hyperedge HE-3 (induced by source paper "can 100 machines agree"):
  with members:
    - "sbft a scalable and decentralized trust infrastructure"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "sbft a scalable decentralized trust infrastructure for blockchains"
    - "a byzantine fault tolerant ordering service for the hyperledger fabric blockchain platform"
    - "revisiting fast practical byzantine fault tolerance"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "incremental consistency guarantees for replicated objects"
    - "xft practical fault tolerance beyond crashes"

Connected through hyperedge HE-4 (induced by source paper "hotpow finality from proof of work quorums"):
  with members:
    - "all that glitters is not bitcoin unveiling the centralized nature of the btc ip network"
    - "squirrl automating attack discovery on blockchain incentive mechanisms with deep reinforcement learning"
    - "txprobe discovering bitcoin s network topology using orphan transactions"
    - "consensus in the age of blockchains"
    - "bobtail a proof of work target that minimizes blockchain mining variance draft"
    - "hijacking bitcoin routing attacks on cryptocurrencies"
    - "blockchain mining games"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"

Connected through hyperedge HE-5 (induced by source paper "certifying blockchain byzantine fault tolerance"):
  with members:
    - "on the correctness of egalitarian paxos"
    - "correctness analysis of ibft"
    - "dissecting tendermint"
    - "the latest gossip on bft consensus"
    - "analysis of the xrp ledger consensus protocol"
    - "evaluating the red belly blockchain"
    - "sbft a scalable decentralized trust infrastructure for blockchains"
    - "blockchains consensus protocols in the wild"

Connected through hyperedge HE-6 (induced by source paper "cryptocurrency with fully asynchronous communication based on banks and democracy"):
  with members:
    - "blockclique scaling blockchains through transaction sharding in a multithreaded block graph"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "majority is not enough bitcoin mining is vulnerable"

Connected through hyperedge HE-7 (induced by source paper "scalable byzantine reliable broadcast extended version"):
  with members:
    - "discovery through gossip"
    - "order optimal information spreading using algebraic gossip"

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)