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: "bitcoin and beyond exclusively informational money"
  Abstract: The famous new money Bitcoin is classified as a technical informational money (TIM). Besides introducing the idea of a TIM, a more extreme notion of informational money will be developed: exclusively informational money (EXIM). The informational coins (INCOs) of an EXIM can be in control of an agent but are not owned by any agent. INCOs of an EXIM cannot be stolen, but they can be lost, or thrown away. The difference between an EXIM and a TIM shows up when considering a user perspective on security matters. Security for an EXIM user is discussed in substantial detail, with the remarkable conclusion that computer security (security models, access control, user names, passwords, firewalls etc.) is not always essential for an EXIM, while the application of cryptography based information security is unavoidable for the use of an EXIM. Bitcoin seems to meet the criteria of an EXIM, but the assertion that "Bitcoin is an EXIM", might also be considered problematic. As a thought experiment we will contemplate Bitguilder, a hypothetical copy of Bitcoin that qualifies as an EXIM. A business ethics assessment of Bitcoin is made which reveals a number of worries. By combining Bitguilder with a so-called technical informational near-money (TINM) a dual money system, having two units with a fluctuating rate, may be obtained. It seems that a dual money can remedy some, but not all, of the ethical worries that arise when contemplating Bitcoin after hypothetically having become a dominant form of money. The contributions that Bitcoin's designers can potentially make to the evolution of EXIMs and TIMs is analyzed in terms of the update of the portfolio of money related natural kinds that comes with Bitcoin.

Connected through hyperedge HE-1 (induced by source paper "architectural adequacy and evolutionary adequacy as characteristics of a candidate informational money"):
  with members:
    - "bitcoin a money like informational commodity"
    - "questions related to bitcoin and other informational money"

Connected through hyperedge HE-2 (induced by source paper "bitcoin a money like informational commodity"):
  with members:
    - "the false premises and promises of bitcoin"
    - "questions related to bitcoin and other informational money"
    - "the unreasonable fundamental incertitudes behind bitcoin mining"
    - "instruction sequence processing operators"
    - "information carriers and identification of information objects an ontological approach"
    - "on the expressiveness of single pass instruction sequences"
    - "informaticology combining computer science data science and fiction science"
    - "ologs a categorical framework for knowledge representation"

Connected through hyperedge HE-3 (induced by source paper "promises impositions and other directionals"):
  with members:
    - "decision taking versus promise issuing"
    - "questions related to bitcoin and other informational money"
    - "a static theory of promises"

Connected through hyperedge HE-4 (induced by source paper "decision taking versus promise issuing"):
  with members:
    - "questions related to bitcoin and other informational money"
    - "decision taking versus action determination"
    - "decision taking for selling thread startup"
    - "instruction sequence processing operators"
    - "informaticology combining computer science data science and fiction science"
    - "decision taking as a service"
    - "about instruction sequence testing"
    - "four conceptions of instruction sequence faults"

Connected through hyperedge HE-5 (induced by source paper "questions related to bitcoin and other informational money"):
  with members:
    - "the false premises and promises of bitcoin"
    - "the unreasonable fundamental incertitudes behind bitcoin mining"
    - "long multiplication by instruction sequences with backward jump instructions"
    - "decision taking for selling thread startup"
    - "informaticology combining computer science data science and fiction science"
    - "on bitcoin and red balloons"
    - "machine structure oriented control code logic"
    - "a static theory of promises"

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.CY(Computers and Society)