Region-based Neighbor Selection in Blockchain Networks

Goto, Yoshinori; Sao, Hidehiro

doi:10.1109/blockchain53845.2021.00015

Cited by 6 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, we compared the block propagation times between networks with nodes having 32 outbound neighbors (𝐴𝐴 + 𝐵𝐵 =32) and networks with nodes having eight outbound neighbors (𝐴𝐴 + 𝐵𝐵 =8) [23]. We found that the networks with nodes having eight outbound neighbors had the shorter block propagation times, though theoretically the condition: 𝐴𝐴 + 𝐵𝐵 =32 has more nodes receiving the block inside and outside the region in each wave.…”

Section: ) Theoretical Number Of Waves Necessary For Block Propagatio...mentioning

confidence: 96%

“…A neighbor selected from inside a region is defined as an inside neighbor and a neighbor selected from outside a region is defined as an outside neighbor. In [23], we proposed each node selects its neighbors randomly from inside and outside the region to which it belongs. Because the neighbor selection is random, it is resilient against eclipse attacks.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

New Neighbor Selection Method for Blockchain Network With Multiple Regions

Goto

Sao²

2022

IEEE Access

Self Cite

View full text Add to dashboard Cite

One of the features of the Bitcoin network today is that its participating nodes are located in different regions of the world. Generally, inter-region data transmission is relatively time-consuming compared with intra-region data transmission. Thus, an important challenge for a blockchain network is shortening the block propagation time in order to reduce forks and maintain fairness, i.e., similar mining durations, for all miners. Previous methods have tried to increase the block propagation speed at the expense of imposing a higher burden on each node and a higher risk of eclipse attack. This paper proposes a new neighbor selection method that is based on only the neighbor's regional information and assumes that a node has a relatively small number of neighbors located outside its region. By using this simple method, the distribution of blocks throughout the network becomes faster and the random neighbor-selection nature of the blockchain network is kept intact; thus, risk of an eclipse attack is low. This paper also proposes a block propagation model over multiple regions for exploring the theoretical reasons for the effectiveness of the proposed neighbor selection method. Finally, it examines a migration scenario to the proposed method from the default neighbor selection method implemented in Bitcoin nodes, and evaluates the migration effects in various sizes of networks.

show abstract

Section: ) Theoretical Number Of Waves Necessary For Block Propagatio...mentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%