A framework for modeling and simulate a Blockchain protocol. It follows a discrete event simulation model. Currently, there are models to simulate Bitcoin and Ethereum.

This is an ongoing research project, these framework is in a beta stage. If you find any issue, please report.

We need to setup a Virtualenv and install all the dependencies

pip3 install virtualenv
virtualenv -p python3 venv
source venv/bin/activate
pip3 install -r requirements.txt

python -m blocksim.main

Check our wiki: https://github.com/BlockbirdLabs/blocksim/wiki

A blockchain is a distributed ledger in which participants that do not fully trust each other agree on the ledger's content by running a consensus algorithm. This technology is raising a lot of interest both in academia and industry, but the lack of tools to evaluate design and implementation decisions may hamper fast progress. To address this issue, this paper presents a discrete-event simulator that is flexible enough to evaluate different blockchain implementations. These blockchains can be rapidly modeled and simulated by extending existing models. Running Bitcoin and Ethereum simulations allowed us to change conditions and answer different questions about their performance. For example, we concluded that doubling the number of transactions per block has a low impact on the block propagation delay (10ms) and that encrypting communication has a high impact in that delay (more than 25%).

You can find the full paper here: https://www.carlosfaria.com/papers/blocksim-blockchain-simulator.pdf

Aditionaly, the presentation for the 2019 IEEE International Conference on Blockchain can be found here: https://www.carlosfaria.com/talks/blocksim-ieee-blockchain-2019.pdf