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: "leader randomization signature free byzantine consensus for consortium blockchains"
  Abstract: This paper presents a new Byzantine consensus algorithm targeting consortium blockchains. To this end, it first revisits the consensus validity property by requiring that the decided value satisfies a predefined predicate, which does not systematically exclude a value proposed only by Byzantine processes, thereby generalizing the validity properties found in the literature. Then, the paper presents a simple and modular Byzantine consensus algorithm that relies neither on a leader, nor on signatures, nor on randomization. It features the fastest multivalued reduction to binary consensus we know of and a time optimal binary Byzantine consensus algorithm. The multivalued reduction runs multiple instances of binary consensus concurrently, which result in a bitmask that is then applied to a vector of multivalued proposals to filter out a valid proposed value that is decided. To ensure eventual decision deterministically, the underlying binary consensus algorithm assumes eventual synchrony.

Connected through hyperedge HE-1 (induced by source paper "tenderbake classical bft style consensus for public blockchains"):
  with members:
    - "correctness analysis of ibft"
    - "introduction to the tezos blockchain"
    - "dissecting tendermint"
    - "dfinity technology overview series consensus system"
    - "the latest gossip on bft consensus"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "blockchains consensus protocols in the wild"
    - "consensus in the age of blockchains"

Connected through hyperedge HE-2 (induced by source paper "on fairness in committee based blockchains"):
  with members:
    - "cryptocurrency egalitarianism a quantitative approach"
    - "fairledger a fair blockchain protocol for financial institutions"
    - "dissecting tendermint"
    - "blockchain abstract data type"
    - "compounding of wealth in proof of stake cryptocurrencies"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "sbft a scalable decentralized trust infrastructure for blockchains"
    - "enhancing accountability and trust in distributed ledgers"

Connected through hyperedge HE-3 (induced by source paper "rationals vs byzantines in consensus based blockchains"):
  with members:
    - "hotstuff bft consensus in the lens of blockchain"
    - "blockchain abstract data type"
    - "a game theoretic analysis of shard based permissionless blockchains"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "optimal selfish mining strategies in bitcoin"
    - "bitcoin ng a scalable blockchain protocol"
    - "bitcoin meets strong consistency"
    - "majority is not enough bitcoin mining is vulnerable"

Connected through hyperedge HE-4 (induced by source paper "dissecting tendermint"):
  with members:
    - "the latest gossip on bft consensus"
    - "blockchain abstract data type"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "correctness and fairness of tendermint core blockchains"
    - "dbft efficient byzantine consensus with a weak coordinator and its application to consortium blockchains"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "bitcoin meets strong consistency"

Connected through hyperedge HE-5 (induced by source paper "correctness analysis of ibft"):
  with members:
    - "the attack of the clones against proof of authority"
    - "the latest gossip on bft consensus"
    - "algorand the efficient and democratic ledger"

Connected through hyperedge HE-6 (induced by source paper "blockchain abstract data type"):
  with members:
    - "formalizing and implementing distributed ledger objects"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "monotonic prefix consistency in distributed systems"
    - "causal consistency beyond memory"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "the weakest failure detector for eventual consistency"
    - "bitcoin meets strong consistency"

Connected through hyperedge HE-7 (induced by source paper "evaluating the red belly blockchain"):
  with members:
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "a byzantine fault tolerant ordering service for the hyperledger fabric blockchain platform"
    - "solida a blockchain protocol based on reconfigurable byzantine consensus"

Connected through hyperedge HE-8 (induced by source paper "a delay tolerant payment scheme based on the ethereum blockchain"):
  with members:
    - "localcoin an ad hoc payment scheme for areas with high connectivity"
    - "the balance attack against proof of work blockchains the r3 testbed as an example"
    - "priority mechanism of bitcoin and its effect on transaction confirmation process"

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)