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Brief bio

I'm a researcher and engineer in Blockchain.

Currently, I'm working on Babylon, a project that envisions to bring the security and decentralisation of Bitcoin to the blockchain ecosystem and more.

Previously, I obtained my PhD at Monash University and CSIRO-Data61 (advisors: Jiangshan Yu, Joseph Liu and Shiping Chen), Msc at The University of Manchester (advisor: Christos Kotselidis), and BSc at BUPT.

My name in Chinese is 韩润超.

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Research profile

I aim at improving scalability, security and privacy of permissionless blockchains and cryptocurrencies.
My research mainly combines techniques from cryptography and distributed computing.

[Google scholar] [DBLP]

Since Babylon

At Babylon, I have been focusing on designing and implementing the Babylon system. Nevertheless, I'm still trying to do blockchain research at my spare time.
My current research interest includes inventing new protocols atop Bitcoin, security sharing protocols, and consensus protocols with new security properties.

  • Modeling Mobile Crash in Byzantine Consensus
    Hans Schmiedel, Runchao Han, Qiang Tang, Ron Steinfeld, and Jiangshan Yu
    The 37th IEEE Computer Security Foundations Symposium (CSF 2024)
  • Interchain Timestamping for Mesh Security
    Ertem Nusret Tas, Runchao Han, David Tse, Fisher Yu, and Kamilla Nazirkhanova
    ACM Conference on Computer and Communications Security (CCS 2023)
  • EBFT: Simplifying BFT Consensus Through Egalitarianism
    Jianyu Niu*, Runchao Han*, Shengqi Liu, Fangyu Gai, Ivan Beschastnikh, Yinqian Zhang, and Chen Feng

At Monash

During my PhD, my research mainly focused on blockchain sharding protocols and their underlying primitives, such as shard allocation and decentralised randomness beacon.
I also have worked on some other topics such as cross-chain communication, economic security of blockchains, layer-2 protocols, and optimisation of Proof-of-Work mining.

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Engineering profile

I work on designing and implementing systems that promote individual sovereignty and freedom, especially blockchains.
I like both prototype systems based on research ideas, and make systems production-ready.
Currently, I am building the Babylon blockchain together with a group of fantastic colleagues.
I have been contributing to the design and implementation of various protocols, including BTC timestamping, BTC staking, and more recently the entire stack for BTC staking integration.
I program mostly in Go and Rust.

[Github]

Selected repositories

Standard

Bug bounty

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Professional services

Talks

  • 2023: FC'23
  • 2022: AFT'22, CSIRO-Data61, Nervos Foundation
  • 2021: AsiaCCS'21, CSIRO-Data61, Peep an EIP #23
  • 2020: Huawei Noah's Ark Lab, Decrypto
  • 2019: AFT'19

Conference program committee member

  • 2025: AsiaCCS
  • 2024: GBC
  • 2023: PST, VeriDBSys@SIGMOD
  • 2022: ICA3PP

Conference/journal reviewer

  • 2024: CCS
  • 2023: DSN, TDSC, SecureComm, Ledger Journal, Journal of Network and Systems Management
  • 2022: EuroS&P, IEEE Blockchain, IEEE Transaction of Service Computing, ACM DLT Journal, Journal of Network and Systems Management
  • 2021: DSN, ICBC, IEEE Blockchain, NSS, MSN, TrustCom, IEEE Transaction of Service Computing
  • 2020: AFT, ICDCS, SRDS, ACNS, AsiaCCS, TrustCom, ACISP, ICBC, NSS, TDSC, The Computer Journal, IEEE IoT Journal, IEEE Software Journal, IEEE Transaction of Service Computing
  • 2019: Indocrypt, TrustCom, Future Generation Computing System

Awards

  • Data61 Top-up Scholarship, CSIRO's Data61
  • Faculty of Information Technology International Postgraduate Research Scholarship, Monash University
  • Faculty of Information Technology Research Scholarship, Monash University
  • Best paper nomination, ISPASS'19

Mentoring

Teaching