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 "are distributed ledger technologies ready for smart transportation systems"):
  Abstract: The aim of this paper is to understand if Distributed Ledger Technologies (DLTs) are ready to support complex services, such as those related to smart transportation systems. In smart transportation services, a huge amount of sensed data is generated by a multitude of vehicles. While DLTs provide very interesting features, such as immutability, traceability and verifiability of data, some doubts on the scalability and responsiveness of these technologies appear to be well-founded. We propose an architecture for smart transportation systems that resorts to DLT features. Moreover, we provide experimental results of a real test-bed over IOTA, a promising DLT for IoT. Results clearly show that, while the viability of the proposal cannot be rejected, further work is needed on the responsiveness of DLT infrastructures.

Includes members:
  Member "likestarter a smart contract based social dao for crowdfunding":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "agent based simulation of blockchains")
  Member "a distributed ledger based infrastructure for smart transportation system and social good":
    also connected through other hyperedges:
      (none)
  Member "on the ethereum blockchain structure a complex networks theory perspective":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "a distributed ledger based infrastructure for smart transportation system and social good")
  Member "orchestrating product provenance story when iota ecosystem meets the electronics supply chain space":
    also connected through other hyperedges:
      (none)
  Member "a blockchain based flight data recorder for cloud accountability":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "agent based simulation of blockchains")
  Member "iota feasibility and perspectives for enabling vehicular applications":
    also connected through other hyperedges:
      (none)
  Member "blackchain scalability for resource constrained accountable vehicle to x communication":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "blockchain for cities a systematic literature review")
  Member "multi level simulation of internet of things on smart territories":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "internet based adaptive distributed simulation of mobile ad hoc networks")

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.CR(Cryptography and Security)