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: "hyperledger fabric a distributed operating system for permissioned blockchains"
  Abstract: Fabric is a modular and extensible open-source system for deploying and operating permissioned blockchains and one of the Hyperledger projects hosted by the Linux Foundation (www.hyperledger.org).   Fabric is the first truly extensible blockchain system for running distributed applications. It supports modular consensus protocols, which allows the system to be tailored to particular use cases and trust models. Fabric is also the first blockchain system that runs distributed applications written in standard, general-purpose programming languages, without systemic dependency on a native cryptocurrency. This stands in sharp contrast to existing block-chain platforms that require "smart-contracts" to be written in domain-specific languages or rely on a cryptocurrency. Fabric realizes the permissioned model using a portable notion of membership, which may be integrated with industry-standard identity management. To support such flexibility, Fabric introduces an entirely novel blockchain design and revamps the way blockchains cope with non-determinism, resource exhaustion, and performance attacks.   This paper describes Fabric, its architecture, the rationale behind various design decisions, its most prominent implementation aspects, as well as its distributed application programming model. We further evaluate Fabric by implementing and benchmarking a Bitcoin-inspired digital currency. We show that Fabric achieves end-to-end throughput of more than 3500 transactions per second in certain popular deployment configurations, with sub-second latency, scaling well to over 100 peers.

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"
    - "blockchains consensus protocols in the wild"
    - "consensus in the age of blockchains"
    - "leader randomization signature free byzantine consensus for consortium blockchains"

Connected through hyperedge HE-2 (induced by source paper "formalising and verifying smart contracts with solidifier a bounded model checker for solidity"):
  with members:
    - "smt friendly formalization of the solidity memory model"
    - "ekiden a platform for confidentiality preserving trustworthy and performant smart contracts"
    - "solc verify a modular verifier for solidity smart contracts"
    - "a semantic framework for the security analysis of ethereum smart contracts"
    - "formal specification and verification of smart contracts for azure blockchain"
    - "securify practical security analysis of smart contracts"

Connected through hyperedge HE-3 (induced by source paper "verifiable and auditable digital interchange framework"):
  with members:
    - "sprites and state channels payment networks that go faster than lightning"
    - "chainspace a sharded smart contracts platform"
    - "performance characterization of a commercial video streaming service"
    - "bitcoin ng a scalable blockchain protocol"
    - "centrally banked cryptocurrencies"

Connected through hyperedge HE-4 (induced by source paper "improving pki bgp and dns using blockchain a systematic review"):
  with members:
    - "lightchain a dht based blockchain for resource constrained environments"
    - "certledger a new pki model with certificate transparency based on blockchain"
    - "certificate transparency with privacy"
    - "certificate transparency with privacy"
    - "majority is not enough bitcoin mining is vulnerable"

Connected through hyperedge HE-5 (induced by source paper "trends in development of databases and blockchain"):
  with members:
    - "chainifydb how to blockchainify any data management system"
    - "blockchain meets database design and implementation of a blockchain relational database"
    - "sok of used cryptography in blockchain"
    - "vchain enabling verifiable boolean range queries over blockchain databases"
    - "ipfs content addressed versioned p2p file system"

Connected through hyperedge HE-6 (induced by source paper "fides managing data on untrusted infrastructure"):
  with members:
    - "parblockchain leveraging transaction parallelism in permissioned blockchain systems"
    - "chainspace a sharded smart contracts platform"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "keeping authorities honest or bust with decentralized witness cosigning"

Connected through hyperedge HE-7 (induced by source paper "pigpaxos devouring the communication bottlenecks in distributed consensus"):
  with members:
    - "cross chain deals and adversarial commerce"
    - "wpaxos wide area network flexible consensus"
    - "casper the friendly finality gadget"
    - "flexible paxos quorum intersection revisited"

Connected through hyperedge HE-8 (induced by source paper "xox fabric a hybrid approach to blockchain transaction execution"):
  with members:
    - "parblockchain leveraging transaction parallelism in permissioned blockchain systems"
    - "fastfabric scaling hyperledger fabric to 20 000 transactions per second"
    - "blockbench a framework for analyzing private blockchains"

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)