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Our mission urges us to consider problems across multiple subject areas, both applied and theoretical. We pursue these problems in the open and share our results in recorded talks and published papers.

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2024-02-01 / Report
A finality calculator for Filecoin’s Expected Consensus
We propose a finality calculator for Filecoin’s Expected consensus that considers what takes place during epochs and can attain, under normal operating conditions, an error probability of 2^(−30) in 30 epochs (15 minutes) - a 30x improvement over the current 900-epoch threshold.
2023-08-30 / Report
Filecoin Proof of Useful Space
This document provides a simple formal definition of Proof of Space (taken from the academic literature) and an informal definition of persistent and useful space (needed for Filecoin). It describes construction details and a security proof for the Stacked-DRGs proof of space (SDR), and goes into how SDR is used in Filecoin.
2023-08-14 / Conference paper
Security analysis of Filecoin's Expected Consensus in the Byzantine vs honest model
Filecoin is the largest storage-based open-source blockchain, both by storage capacity (>11EiB) and market capitalization. This paper provides the first formal security analysis of Filecoin’s consensus (ordering) protocol, Expected Consensus (EC).
AFT 2023 / 2023.10.23 / Princeton, NJ, USA
2023-04-22 / Conference paper
Base fee manipulation in Ethereum's EIP-1559 transaction fee mechanism
In 2021 Ethereum adjusted the transaction pricing mechanism by implementing EIP-1559, which introduces the base fee - a fixed network fee per block that is burned and adjusted dynamically in accordance with network demand.
DISC 2023 / 2023.10.09 / L'Aquila, Italy
Sarah Azouvi , Guy Goren , Lioba Heimbach, Alexander Hicks