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, CAYENNE EXTRA HOT 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 Short Shifter 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.