RESUMO
This paper provides an extensive examination of a sizable dataset of English tweets focusing on nine widely recognized cryptocurrencies, specifically Cardano, Binance, Bitcoin, Dogecoin, Ethereum, Fantom, Matic, Shiba, and Ripple. Our goal was to conduct a psycholinguistic and emotional analysis of social media content associated with these cryptocurrencies. Such analysis can enable researchers and experts dealing with cryptocurrencies to make more informed decisions. Our work involved comparing linguistic characteristics across the diverse digital coins, shedding light on the distinctive linguistic patterns emerging in each coin's community. To achieve this, we utilized advanced text analysis techniques. Additionally, this work unveiled an understanding of the interplay between these digital assets. By examining which coin pairs are mentioned together most frequently in the dataset, we established co-mentions among different cryptocurrencies. To ensure the reliability of our findings, we initially gathered a total of 832,559 tweets from X. These tweets underwent a rigorous preprocessing stage, resulting in a refined dataset of 115,899 tweets that were used for our analysis. Overall, our research offers valuable perception into the linguistic nuances of various digital coins' online communities and provides a deeper understanding of their interactions in the cryptocurrency space.
RESUMO
We develop an analysis of the cryptocurrency market borrowing methods and concepts from ecology. This approach makes it possible to identify specific diversity patterns and their variation, in close analogy with ecological systems, and to characterize the cryptocurrency market in an effective way. At the same time, it shows how non-biological systems can have an important role in contrasting different ecological theories and in testing the use of neutral models. The study of the cryptocurrencies abundance distribution and the evolution of the community structure strongly indicates that these statistical patterns are not consistent with neutrality. In particular, the necessity to increase the temporal change in community composition when the number of cryptocurrencies grows, suggests that their interactions are not necessarily weak. The analysis of the intraspecific and interspecific interdependency supports this fact and demonstrates the presence of a market sector influenced by mutualistic relations. These latest findings challenge the hypothesis of weakly interacting symmetric species, the postulate at the heart of neutral models.
RESUMO
Mimblewimble (MW) is a privacy-oriented cryptocurrency technology that provides security and scalability properties that distinguish it from other protocols of its kind. We present and discuss those properties and outline the basis of a model-driven verification approach to address the certification of the correctness of the protocol implementations. In particular, we propose an idealized model that is key in the described verification process, and identify and precisely state the conditions for our model to ensure the verification of the relevant security properties of MW. Since MW is built on top of a consensus protocol, we develop a Z specification of one such protocol and present an excerpt of the {log} prototype after its Z specification. This {log} prototype can be used as an executable model. This allows us to analyze the behavior of the protocol without having to implement it in a low level programming language. Finally, we analyze the Grin and Beam implementations of MW in their current state of development.
Assuntos
PrivacidadeRESUMO
In the present computational scenario, one can perceive the emergence of cryptocurrencies and the increased utilization of IoT devices, which are pushing to new challenges, opportunities, and behavior changes. It is still not known how these technologies will impact the current business and economic models. In this regard, this study proposes an economy of things architecture and an approach comparing several cryptocurrencies. Therefore, the proposed architecture aims to use these new opportunities to enable device-to-device (D2D) interaction based on this novel paradigm, called the Economy of Things (EoT). An experimental environment was conducted to compare characteristics of the cryptocurrencies Ripple, Iota, and Ethereum. The initial results show several interesting differences related to transaction costs, errors, speeds, and threads.
RESUMO
Os problemas socioecológicos são complexos e multidimensionais, envolvendo pelo menos a dimensão ambiental, social, econômica, política e institucional. Os problemas relacionados ao uso múltiplo dos recursos hídricos, a revitalização de bacias hidrográficas e a recuperação de rios urbanos têm colocado novos desafios para a sociedade, os quais requerem soluções inovadoras. Algumas soluções propostas, como a adoção de esquemas de Pagamento por Serviços Ambientais (PSA), têm por objetivo incentivar que as pessoas adotem ações direcionadas para resolver problemas específicos em troca de incentivos econômicos. Mas essas soluções possuem limitações relativas a continuidade das ações após o suprimento dos incentivos. Os PSA tradicionais são baseados na moeda oficial de um país e, consequentemente, podem ser interrompidos na ocorrência de crises econômicas. Nesse sentido, o objetivo principal deste trabalho é apresentar e discutir uma proposta geral de gestão para a Bacia Hidrográfica do Rio Jundiaí baseada na adoção de uma moeda complementar criada com suporte da tecnologia do blockchain. A moeda complementar é a criptomoeda denominada Aqua que visa incentivar ações, por exemplo, como a recuperação das áreas de proteção ambiental em áreas rurais, assim como, ações ambientais em áreas urbanas. A criptomoeda Aqua busca exercer a função de meio de troca e sua circulação ocorrerá somente dentro da rede de usuários que a aceitarem. Visando evitar o efeito negativo de ações especulativas, recomenda-se que a criptomoeda Aqua não seja conversível em reais ou outra criptomoeda.
Socioecological problems are complex and multidimensional, involving at least an environmental, socio, economic, political and institutional dimensions. Proble-ms related to multiple uses of water resources, watershed revitalization and urban river recovery have placed new challenges on society and require innovative solutions. Proposed solutions, such as payment for ecosystem services (PES), aim to encourage people to adopt actions to solve specific issues in exchange for economic incentives. These solutions have limitations related to continuity of actions after the economic incentives cease. Thus, the main goal of this paper is to introduce and discuss a proposal to manage the Jundiai River Watershed that includes the adoption of a complementary currency created with blockchain technology, the Aqua. The main purposes of this cryptocurrency arethe recovery of riparian forests in rural zones and environmental actions in urban areas. The cryptocurrency Aqua would act as a medium of exchange and circulate only within the network of establishments that accept it. Seeking to avoid the negative consequences of speculative actions, we recommend the Aqua is not convertible into Reais or other cryptocurrencies.