Publications

Publications in Google Scholar and DBLP.

• Aegis: A Decentralized Expansion Blockchain
  Yogev Bar-On, Roi Bar-Zur, Omer Ben-Porat, Nimrod Cohen, Ittay Eyal, Matan Sitbon
  Workshop on Scalability & Interoperability of Blockchains at AFT 2024
  Enabling the secure creation of blockchains where validators’ stakes are derived from another chain.
  Paper

• LedgerHedger: Gas Reservation for Smart-Contract Security
  Itay Tsabary, Alex Manuskin, Roi Bar-Zur and Ittay Eyal
  Financial Cryptography and Data Security 2024
  A smart contract secured by a game theoretic analysis, enabling the reservation of future gas for timely transaction confirmation on the blockchain.
  Paper
• Deep Bribe: Predicting the Rise of Bribery in Blockchain Mining with Deep RL
  Roi Bar-Zur*, Danielle Dori*, Sharon Vardi*, Ittay Eyal and Aviv Tamar (*Equal contribution)
  Deep Learning S&P Workshop ‘23 (co-located with IEEE S&P)
  Using deep RL to show that Nakamoto based blockchains become more vulnerable to selfish mining when petty compliant miners are present.
  Paper Code
• WeRLman: To Tackle Whale (Transactions), Go Deep (RL)
  Roi Bar-Zur, Ameer Abu-Hanna, Ittay Eyal and Aviv Tamar
  IEEE S&P ‘23
  Analyzing a model of Nakamoto based blockchains with varying block rewards using deep RL.
  Paper Code Video Blog Poster
• Efficient MDP Analysis for Selfish-Mining in Blockchains
  Roi Bar-Zur, Ittay Eyal and Aviv Tamar
  ACM AFT ‘20
  A novel method to efficiently find the optimal strategy of a selfish miner. We use this method to analyze Ethereum.
  Paper Code Video