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Peter Taylor

Event Details:

Friday, June 1, 2018
3:15pm - 4:15pm PDT

Peter Taylor, The University of Melbourne

Block arrivals in the Bitcoin blockchain

Coauthors: Rhys Bowden, Paul Keeler, Tony Krzesinski and Mirte van Weert

Bitcoin is an electronic payment system where payment transactions are verified and stored in a data structure called the blockchain. Bitcoin miners work individually to solve a computationally intensive problem, and with each solution a Bitcoin block is generated, resulting in a new arrival to the blockchain.

In order to control the rate at which blocks are generated, the difficulty of the computational problem is updated every 2,016 blocks  In the original Bitcoin paper, it was suggested that the blockchain arrivals occur according to a homogeneous Poisson process. 

Based on stochastic analysis of the block arrival process as well as blockchain block arrival data, we demonstrate that this is not the case. We present a refined mathematical model for block arrivals, focusing on both the block arrivals during a period of constant difficulty and how the difficulty level evolves over time.

Event Sponsor: 
Advanced Financial Technologies Laboratory
 
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