Workshop on

Distributed Cryptocurrencies and Consensus Ledgers (DCCL 2016)
25th July 2016, Chicago (IL), USA

Co-located with PODC 2016 (


The recent global interest in cryptocurrencies was triggered by the rise of
Bitcoin, which introduced a public ledger called the blockchain to record
the history of its transactions. Bitcoin maintains its blockchain through a
decentralized peer-to-peer cryptographic protocol that works without any
trusted central authority, but it assumes (at least) that a majority of the
computing power in the system is held by honest nodes. Cryptographic
techniques ensure the integrity of all transactions in the distributed
ledger and new entries are appended through a consensus protocol. Many
alternative cryptocurrencies have introduced variations of Bitcoin and
proposed alternative designs for consensus ledgers. Novel protocols, known
as "smart contracts", are constructed on top of the blockchain, achieving
guarantees that were not possible before. Today many financial institutions
see the disruptive power of this technology and regard it as a promising
alternative to their established business practices, not depending on
centralized control, eliminating intermediaries, and enabling new

Several consensus mechanisms are currently under investigation: On the one
hand, Bitcoin's consensus protocol, called "Nakamoto consensus", allows
anonymous nodes to participate based on a "proof-of-work". On the other
hand, traditional Byzantine consensus and BFT protocols play a role in
settings where all nodes are known to each other. Many other systems have
been proposed and lie somewhere between these extremes. Distributed
knowledge, consistency, and reaching consensus among selfish and mutually
distrusting nodes are core topics in the theory and practice of distributed
computing. Hence, the popularity of decentralized cryptocurrencies and
consensus ledgers creates a unique opportunity for the field to explore
this nascent domain and to influence it.

Call for Contributions

This workshop aims at discussing questions of consistency, concurrency,
distributed knowledge, integrity, and reaching consensus in the context of
cryptocurrencies and consensus ledgers. The workshop solicits submissions
describing current work addressing decentralized cryptocurrencies and
consensus ledgers, including analytical results, work on systems, and/or
position papers.

Topics of interest include, but are not limited to
* Distributed consensus among selfish nodes
* Scalability
* Mechanisms for consensus ledgers
* Proof-of-work and alternatives
* Byzantine fault tolerance
* Systems implementing distributed ledgers and blockchains
* Applications of blockchains to distributed computing
* Nakamoto consensus and protocols based on proof-of-work
* Smart contracts
* Anonymity and privacy

Program Committee

Elli Androulaki, IBM Research – Zurich, Switzerland
Joseph Bonneau, Stanford University, USA
Christian Cachin, IBM Research – Zurich, Switzerland, Chair
Christian Decker, ETH Zürich
Juan A. Garay, Yahoo Labs, USA
Seth Gilbert, National University of Singapore
Aggelos Kiayias, University of Athens
Marko Vukolić, IBM Research – Zurich, Switzerland

Invited Speakers

Ittay Eyal, Cornell University, USA
Aniket Kate, Purdue University, USA
Sarah Meiklejohn, University College London, UK
Emin Gün Sirer, Cornell University, USA
Aviv Zohar, Hebrew University, Israel


Submissions should be written in English, formatted in single-column
letter-sized or A4-sized format, and prepared as a PDF file. Submissions
have to include: a title, authors' name and affiliation, and an abstract of
up to four pages; additional material may be added in an optional
appendix. Papers must be submitted electronically.

To submit a contribution, go to the submission site at

Final papers will be available to participants electronically during the
workshop. In order to facilitate resubmission to more formal venues, no
archival proceedings will be published. Authors will have the option to
upload the final version of their papers on the workshop website.


Submission deadline             25 May 2016 AoE
Acceptance notification	 	13 June 2016
Workshop	 	 	25 July 2016


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