A Model for Fast Mining Blockchains
Abstract
We study a Markovian model for a blockchain mining process. In the limit where there is an infinite number of miners, the model satisfies a functional law of large numbers due to Barbour and Luczac (2008), leading to an infinite set of coupled ODEs characterising the blockchain heights. We show that the sequence of solutions to this system converges uniformly, to a limiting profile in an appropriate comoving frame. Utilising asymptotic arguments inspired by Brunet and Derrida (1997), we derive an explicit expression for the position of the travelling front, which exhibits a leading order logarithmic Bramson correction in time. For a finite number of miners, we further derive a correction to the travelling speed which is logarithmic in the number of miners. Finally, by application of a computation due to Ablowitz and Zeppetella (1979), we identify that, for a specific choice of the travelling speed, the Painlevé integrable, travelling wave solution of the Fisher-KPP equation with drift accurately matches our limiting profile. Our results are supported by numerical simulations.
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BibTeX
@misc{bowden2026model,
title = {{A Model for Fast Mining Blockchains}},
author = {Rhys Bowden and Cengiz Gazi and Jan de Gier and Peter Taylor},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.41312},
eprint = {2610.41312},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.41312},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - A Model for Fast Mining Blockchains
AU - Rhys Bowden
AU - Cengiz Gazi
AU - Jan de Gier
AU - Peter Taylor
PY - 2026
DA - 2026/10/30
PB - arXiv
DO - 10.48550/arxiv.2610.41312
UR - https://arxiv.org/abs/2610.41312
AB - We study a Markovian model for a blockchain mining process. In the limit where there is an infinite number of miners, the model satisfies a functional law of large numbers due to Barbour and Luczac (2008), leading to an infinite set of coupled ODEs characterising the blockchain heights. We show that the sequence of solutions to this system converges uniformly, to a limiting profile in an appropriate comoving frame. Utilising asymptotic arguments inspired by Brunet and Derrida (1997), we derive an explicit expression for the position of the travelling front, which exhibits a leading order logarithmic Bramson correction in time. For a finite number of miners, we further derive a correction to the travelling speed which is logarithmic in the number of miners. Finally, by application of a computation due to Ablowitz and Zeppetella (1979), we identify that, for a specific choice of the travelling speed, the Painlevé integrable, travelling wave solution of the Fisher-KPP equation with drift accurately matches our limiting profile. Our results are supported by numerical simulations.
ER -