human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "xox fabric a hybrid approach to transaction execution"):
  Abstract: Performance and scalability are a major concern for blockchain systems to become viable for mainstream applications. While many permissionless systems are limited by slow the consensus algorithms, Hyperledger Fabric has unique throughput optimization potential due to its permissioned nature. It has been shown to handle tens of thousands of transactions per second. However, these numbers show only the nominal throughput for uncontested transaction workloads. If incoming transactions compete for a small set of hot keys in the world state, the effective throughput drops drastically. We propose a novel two-pronged transaction execution approach that minimizes invalid transactions in the Fabric blockchain while maximizing concurrent execution.

Includes members:
  Member "fastfabric scaling hyperledger fabric to 20 000 transactions per second":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "xox fabric a hybrid approach to blockchain transaction execution")
  Member "how to databasify a blockchain the case of hyperledger fabric":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "blockchains and distributed databases a twin study")

Question: Please tell me which class the source paper 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)