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: "deconstructing the blockchain to approach physical limits"
  Abstract: Transaction throughput, confirmation latency and confirmation reliability are fundamental performance measures of any blockchain system in addition to its security. In a decentralized setting, these measures are limited by two underlying physical network attributes: communication capacity and speed-of-light propagation delay. Existing systems operate far away from these physical limits. In this work we introduce Prism, a new proof-of-work blockchain protocol, which can achieve 1) security against up to 50% adversarial hashing power; 2) optimal throughput up to the capacity C of the network; 3) confirmation latency for honest transactions proportional to the propagation delay D, with confirmation error probability exponentially small in CD ; 4) eventual total ordering of all transactions. Our approach to the design of this protocol is based on deconstructing the blockchain into its basic functionalities and systematically scaling up these functionalities to approach their physical limits.

Connected through hyperedge HE-1 (induced by source paper "surface a practical blockchain consensus algorithm for real world networks"):
  with members:
    - "rationality is self defeating in permissionless systems"
    - "dfinity technology overview series consensus system"
    - "hotstuff bft consensus in the lens of blockchain"
    - "scaling nakamoto consensus to thousands of transactions per second"
    - "transaction propagation on permissionless blockchains incentive and routing mechanisms"
    - "implicit consensus blockchain with unbounded throughput"
    - "chainspace a sharded smart contracts platform"
    - "casper the friendly finality gadget"

Connected through hyperedge HE-2 (induced by source paper "topology aware cooperative data protection in blockchain based decentralized storage networks"):
  with members:
    - "explicit constructions of msr codes for clustered distributed storage the rack aware storage model"
    - "hierarchical coding to enable scalability and flexibility in heterogeneous cloud storage"
    - "the storage versus repair bandwidth trade off for clustered storage systems"
    - "rack aware regenerating codes for data centers"
    - "cooperative repair constructions of optimal mds codes for all admissible parameters"
    - "multi rack distributed data storage networks"
    - "blockchain in internet of things challenges and solutions"
    - "non homogeneous two rack model for distributed storage systems"

Connected through hyperedge HE-3 (induced by source paper "continuous time analysis of the bitcoin and prism backbone protocols"):
  with members:
    - "on analysis of the bitcoin and prism backbone protocols"
    - "scaling nakamoto consensus to thousands of transactions per second"
    - "the balance attack against proof of work blockchains the r3 testbed as an example"
    - "bitcoin ng a scalable blockchain protocol"

Connected through hyperedge HE-4 (induced by source paper "barracuda the power of ell polling in proof of stake blockchains"):
  with members:
    - "global majority consensus by local majority polling on graphs of a given degree sequence"
    - "scaling nakamoto consensus to thousands of transactions per second"
    - "casper the friendly finality gadget"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "bitcoin ng a scalable blockchain protocol"
    - "deanonymisation of clients in bitcoin p2p network"
    - "majority is not enough bitcoin mining is vulnerable"

Connected through hyperedge HE-5 (induced by source paper "eunomia a permissionless parallel chain protocol based on logical clock"):
  with members:
    - "scaling nakamoto consensus to thousands of transactions per second"
    - "ohie blockchain scaling made simple"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "optimal selfish mining strategies in bitcoin"
    - "majority is not enough bitcoin mining is vulnerable"

Connected through hyperedge HE-6 (induced by source paper "nakamoto consensus with verifiable delay puzzle"):
  with members:
    - "the latest gossip on bft consensus"
    - "scaling nakamoto consensus to thousands of transactions per second"
    - "algorand the efficient and democratic ledger"
    - "cryptocurrencies without proof of work"
    - "majority is not enough bitcoin mining is vulnerable"

Connected through hyperedge HE-7 (induced by source paper "on analysis of the bitcoin and prism backbone protocols"):
  with members:
    - "scaling nakamoto consensus to thousands of transactions per second"
    - "the balance attack against proof of work blockchains the r3 testbed as an example"
    - "optimal selfish mining strategies in bitcoin"
    - "bitcoin ng a scalable blockchain protocol"
    - "bitcoin meets strong consistency"

Connected through hyperedge HE-8 (induced by source paper "prism scaling bitcoin by 10 000x"):
  with members:
    - "scaling nakamoto consensus to thousands of transactions per second"
    - "ohie blockchain scaling made simple"
    - "blockchains consensus protocols in the wild"
    - "the balance attack against proof of work blockchains the r3 testbed as an example"
    - "bitcoin ng a scalable blockchain protocol"

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.CR(Cryptography and Security)