Town Crier


Featured Talks

  • Silicon Valley Ethereum Meetup by Fan Zhang. Slides
  • Using Hardware Enclaves to Provide Trusted Data to Smart Contracts (Episode 164) by Prof. Ari Juels.
  • IC3 Meetup: Town Crier: An Authenticated Data Feed for Smart Contracts by Prof. Ari Juels. YouTube
  • Conference talk at CCS’16, Vienna by Fan Zhang. YouTube


The Town Crier paper is published at CCS’16.

  • The conference version is available online.
  • An extended version with more technical details and examples is on IACR ePrint.

If you need to cite Town Crier, please use the following:

 author = {Zhang, Fan and Cecchetti, Ethan and Croman, Kyle and Juels, Ari and Shi, Elaine},
 title = {Town Crier: An Authenticated Data Feed for Smart Contracts},
 booktitle = {Proceedings of the 2016 ACM SIGSAC Conference on Computer and Communications Security},
 series = {CCS '16},
 year = {2016},
 isbn = {978-1-4503-4139-4},
 location = {Vienna, Austria},
 pages = {270--282},
 numpages = {13},
 url = {},
 doi = {10.1145/2976749.2978326},
 acmid = {2978326},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {authenticated data feeds, bitcoin, ethereum, intel SGX, smart contracts, trusted hardware},