| Texto completo | |
| Autor(es): Mostrar menos - |
Camilo, Gustavo F.
;
Rebello, Gabriel Antonio F.
;
de Souza, Lucas Airam C.
;
Potop-Butucaru, Maria
;
Amorim, Marcelo D.
;
Campista, Miguel Elias M.
;
Costa, Luis Henrique M. K.
;
Moraes, IM
;
Campista, MEM
;
Ghamri-Doudane, Y
;
Costa, LHMK
;
Rubinstein, MG
Número total de Autores: 12
|
| Tipo de documento: | Artigo Científico |
| Fonte: | 2022 IEEE LATIN-AMERICAN CONFERENCE ON COMMUNICATIONS (LATINCOM); v. N/A, p. 6-pg., 2022-01-01. |
| Resumo | |
Payment channel networks (PCN) offer a fast, secure, and distributed alternative payment method while avoiding slow consensus mechanisms of blockchains. Nonetheless, the PCN topology directly influences the performance, cost, and payment success rate. This paper analyzes the evolution of the Lightning Network topology, which is currently the leading payment channel network. We reconstruct the network graph using real data from a set of channel announcement messages collected between January 2020 and August 2021. Our analysis uses typical graph metrics, such as transitivity, diameter, and degree centrality, to evaluate the state and evolution of the network. The results show a strong trend in resource and connectivity centralization. Only 0.38% of nodes concentrate 50% of the network capacity, exposing a vulnerability to targeted attacks. As with the Bitcoin cryptocurrency, the centralization of the Lightning PCN directly contrasts with the original goal of a fully-decentralized network. Moreover, the low network transitivity compromises channel rebalancing techniques, which contribute to the stability of the system. This trend evidences the need for new attachment policies prioritizing greater network decentralization and robustness. (AU) | |
| Processo FAPESP: | 18/23292-0 - Projeto ACCRUE-SFI: infraestrutura avançada e colaborativa de pesquisa para internet do futuro segura |
| Beneficiário: | Otto Carlos Muniz Bandeira Duarte |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 15/24485-9 - Internet do futuro aplicada a cidades inteligentes |
| Beneficiário: | Fabio Kon |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 14/50937-1 - INCT 2014: da Internet do Futuro |
| Beneficiário: | Fabio Kon |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 15/24494-8 - Comunicação e processamento de big data em nuvens e névoas computacionais |
| Beneficiário: | Nelson Luis Saldanha da Fonseca |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |