NavTalks
From Navigators
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<h2><strong>September 2018</strong></h2> | <h2><strong>September 2018</strong></h2> | ||
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<td style="width:100px">20 September</td> | <td style="width:100px">20 September</td> | ||
<td style="width:200px">Alysson Bessani</td> | <td style="width:200px">Alysson Bessani</td> | ||
- | <td style="width: | + | <td style="width:600px"><span style="border-bottom: dashed 1px #000" title="The blockchain has emerged as a disruptive paradigm to build decentralized transactional applications such as cryptocurrencies. The core of the technology is the consensus algorithm used to order blocks of transactions in a Byzantine fault-tolerant (BFT) way. There are two basic classes of such algorithms: Nakamoto consensus (employed in Bitcoin and other permissionless systems), which requires peers to solve a cryptographic puzzle to propose new blocks and eventually converge to a single chain; and “traditional” BFT consensus (used in permissioned systems), which employs well-known protocols for reaching agreement in a closed set of known processes. The former scales to 10000s of nodes but can process only a few transactions/s with a latency of hours, while the latter performs much better, but only with a few dozens of nodes. Recently, many hybrid consensus protocols have been proposed. They merge these two classes to achieve both scalability and performance. Although promising, they are still subject to limitations coming from their building blocks (e.g., high latency and power consumption). SMaRtChain aims to devise a set of radically different consensus protocols for both permissioned and permissionless blockchains. First, we plan to extend the Consensus with Unknown Participants paradigm to adapt it for open blockchains, aiming to overcome the limitations described above. Second, we want to design new scalable and high-performance BFT consensus algorithms based on solid theoretical building blocks for 1000s of nodes (enough for hybrid and permissioned blockchains) and capable of processing 1000s of transactions/s with sub-second latency. We will implement and integrate these contributions into existing open-source blockchain platforms (e.g., Fabric, Corda) for maximum impact. Finally, we will investigate and address the limitations of existing blockchains to support applications requiring big data, machine learning, and integration with the internet of things."> |
SMaRtChain: A Principled Design for a New Generation of Blockchains</span></td> | SMaRtChain: A Principled Design for a New Generation of Blockchains</span></td> | ||
<td style="width:30px"> </td> | <td style="width:30px"> </td> |
Revision as of 11:35, 13 November 2018
The Navtalks is a series of informal talks given by Navigators members or some special guests about every two-weeks at Ciências, ULisboa.
Leave mouse over title's presentation to read the abstract.
Contents |
September 2018
20 September | Alysson Bessani | SMaRtChain: A Principled Design for a New Generation of Blockchains | |
20 September | Rui Miguel | Named Data Networking with Programmable Switches |
October 2018
4 October | Bruno Vavala (Research Scientist in Intel Labs) | Private Data Objects | |
4 October | Marcus Völp (Research Scientist, CritiX, SnT, Univ. of Luxembourg) | Reflective Consensus | |
18 October | Yair Amir (Professor, Johns Hopkins University) | Timely, Reliable, and Cost-Effective Internet Transport Service using Structured Overlay Networks |
November 2018
13/11 | Salvatore Signorello | The Past, the Present and some Future of Interest Flooding Attacks in Named-Data Networking | |
13/11 | Tiago Oliveira | Vawlt - Privacy-Centered Cloud Storage |
November 2018
27/11 | Nuno Neves | ||
27/11 | Ricardo Mendes |
December 2018
11/12 | António Casimiro | |||
11/12 | Carlos Nascimento |
January 2019
15/01 | Fernando Alves | ||
15/01 | Ibéria Medeiros | ||
29/01 | Fernando Ramos | ||
29/01 | Miguel Garcia |
February 2019
19/02 | Ana Fidalgo | ||
19/02 | João Sousa |
March 2019
12/03 | Pedro Gaspar | ||
12/03 | Ricardo Morgado | ||
26/03 | André Oliveira | ||
26/03 | Nuno Dionísio |
April 2019
09/04 | Adriano Serckumecka | ||
09/04 | Tulio Ribeiro | ||
30/04 | Miguel Moreira | ||
30/04 | Pedro Ferreira |
May 2019
14/05 | Diogo Gonçalves | ||
14/05 | Vinicius Cogo | ||
28/05 | Francisco Araújo | ||
28/05 | Miguel Matos |
June 2019
11/06 | Eric Vial | ||
11/06 | Robin Vassantlal | ||
25/06 | João Pinto | ||
25/06 | Tiago Correia |