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Documents authored by Anceaume, Emmanuelle

Document
DOI: 10.4230/LIPIcs.OPODIS.2021.6
On Finality in Blockchains

Authors: Emmanuelle Anceaume, Antonella Del Pozzo, Thibault Rieutord, and Sara Tucci-Piergiovanni

Published in: LIPIcs, Volume 217, 25th International Conference on Principles of Distributed Systems (OPODIS 2021)

Abstract
This paper focuses on blockchain finality, which refers to the time when it becomes impossible to remove a block that has previously been appended to the blockchain. Blockchain finality can be deterministic or probabilistic, immediate or eventual. To favor availability against consistency in the face of partitions, most blockchains only offer probabilistic eventual finality: blocks may be revoked after being appended to the blockchain, yet with decreasing probability as they sink deeper into the chain. Other blockchains favor consistency by leveraging the immediate finality of Consensus - a block appended is never revoked - at the cost of additional synchronization. The quest for "good" deterministic finality properties for blockchains is still in its infancy, though. Our motivation is to provide a thorough study of several possible deterministic finality properties and explore their solvability. This is achieved by introducing the notion of bounded revocation, which informally says that the number of blocks that can be revoked from the current blockchain is bounded. Based on the requirements we impose on this revocation number, we provide reductions between different forms of eventual finality, Consensus and Eventual Consensus. From these reductions, we show some related impossibility results in presence of Byzantine processes, and provide non-trivial results. In particular, we provide an algorithm that solves a weak form of eventual finality in an asynchronous system in presence of an unbounded number of Byzantine processes. We also provide an algorithm that solves eventual finality with a bounded revocation number in an eventually synchronous environment in presence of less than half of Byzantine processes. The simplicity of the arguments should better guide blockchain designs and link them to clear formal properties of finality.
Cite as

Emmanuelle Anceaume, Antonella Del Pozzo, Thibault Rieutord, and Sara Tucci-Piergiovanni. On Finality in Blockchains. In 25th International Conference on Principles of Distributed Systems (OPODIS 2021). Leibniz International Proceedings in Informatics (LIPIcs), Volume 217, pp. 6:1-6:19, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)

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@InProceedings{anceaume_et_al:LIPIcs.OPODIS.2021.6,
  author =	{Anceaume, Emmanuelle and Del Pozzo, Antonella and Rieutord, Thibault and Tucci-Piergiovanni, Sara},
  title =	{{On Finality in Blockchains}},
  booktitle =	{25th International Conference on Principles of Distributed Systems (OPODIS 2021)},
  pages =	{6:1--6:19},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-219-8},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{217},
  editor =	{Bramas, Quentin and Gramoli, Vincent and Milani, Alessia},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2021.6},
  URN =		{urn:nbn:de:0030-drops-157810},
  doi =		{10.4230/LIPIcs.OPODIS.2021.6},
  annote =	{Keywords: Blockchain, consistency properties, Byzantine tolerant implementations}
}
Document
Complete Volume
DOI: 10.4230/OASIcs.Tokenomics.2020
OASIcs, Volume 82, Tokenomics 2020, Complete Volume

Authors: Emmanuelle Anceaume, Christophe Bisière, Matthieu Bouvard, Quentin Bramas, and Catherine Casamatta

Published in: OASIcs, Volume 82, 2nd International Conference on Blockchain Economics, Security and Protocols (Tokenomics 2020)

Abstract
OASIcs, Volume 82, Tokenomics 2020, Complete Volume
Cite as

2nd International Conference on Blockchain Economics, Security and Protocols (Tokenomics 2020). Open Access Series in Informatics (OASIcs), Volume 82, pp. 1-136, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@Proceedings{anceaume_et_al:OASIcs.Tokenomics.2020,
  title =	{{OASIcs, Volume 82, Tokenomics 2020, Complete Volume}},
  booktitle =	{2nd International Conference on Blockchain Economics, Security and Protocols (Tokenomics 2020)},
  pages =	{1--136},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-157-3},
  ISSN =	{2190-6807},
  year =	{2021},
  volume =	{82},
  editor =	{Anceaume, Emmanuelle and Bisi\`{e}re, Christophe and Bouvard, Matthieu and Bramas, Quentin and Casamatta, Catherine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Tokenomics.2020},
  URN =		{urn:nbn:de:0030-drops-135213},
  doi =		{10.4230/OASIcs.Tokenomics.2020},
  annote =	{Keywords: OASIcs, Volume 82, Tokenomics 2020, Complete Volume}
}
Document
Front Matter
DOI: 10.4230/OASIcs.Tokenomics.2020.0
Front Matter, Table of Contents, Preface, Conference Organization

Authors: Emmanuelle Anceaume, Christophe Bisière, Matthieu Bouvard, Quentin Bramas, and Catherine Casamatta

Published in: OASIcs, Volume 82, 2nd International Conference on Blockchain Economics, Security and Protocols (Tokenomics 2020)

Abstract
Front Matter, Table of Contents, Preface, Conference Organization
Cite as

2nd International Conference on Blockchain Economics, Security and Protocols (Tokenomics 2020). Open Access Series in Informatics (OASIcs), Volume 82, pp. 0:i-0:x, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@InProceedings{anceaume_et_al:OASIcs.Tokenomics.2020.0,
  author =	{Anceaume, Emmanuelle and Bisi\`{e}re, Christophe and Bouvard, Matthieu and Bramas, Quentin and Casamatta, Catherine},
  title =	{{Front Matter, Table of Contents, Preface, Conference Organization}},
  booktitle =	{2nd International Conference on Blockchain Economics, Security and Protocols (Tokenomics 2020)},
  pages =	{0:i--0:x},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-157-3},
  ISSN =	{2190-6807},
  year =	{2021},
  volume =	{82},
  editor =	{Anceaume, Emmanuelle and Bisi\`{e}re, Christophe and Bouvard, Matthieu and Bramas, Quentin and Casamatta, Catherine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.Tokenomics.2020.0},
  URN =		{urn:nbn:de:0030-drops-135220},
  doi =		{10.4230/OASIcs.Tokenomics.2020.0},
  annote =	{Keywords: Front Matter, Table of Contents, Preface, Conference Organization}
}
Document
Complete Volume
DOI: 10.4230/LIPIcs.OPODIS.2015
LIPIcs, Volume 46, OPODIS'15, Complete Volume

Authors: Emmanuelle Anceaume, Christian Cachin, and Maria Potop-Butucaru

Published in: LIPIcs, Volume 46, 19th International Conference on Principles of Distributed Systems (OPODIS 2015)

Abstract
LIPIcs, Volume 46, OPODIS'15, Complete Volume
Cite as

19th International Conference on Principles of Distributed Systems (OPODIS 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 46, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016)

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@Proceedings{anceaume_et_al:LIPIcs.OPODIS.2015,
  title =	{{LIPIcs, Volume 46, OPODIS'15, Complete Volume}},
  booktitle =	{19th International Conference on Principles of Distributed Systems (OPODIS 2015)},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-98-9},
  ISSN =	{1868-8969},
  year =	{2016},
  volume =	{46},
  editor =	{Anceaume, Emmanuelle and Cachin, Christian and Potop-Butucaru, Maria},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2015},
  URN =		{urn:nbn:de:0030-drops-67174},
  doi =		{10.4230/LIPIcs.OPODIS.2015},
  annote =	{Keywords: Distributed Systems}
}
Document
Front Matter
DOI: 10.4230/LIPIcs.OPODIS.2015.0
Front Matter, Table of Contents, Preface, Committees, List of Authors

Authors: Emmanuelle Anceaume, Christian Cachin, and Maria Potop-Butucaru

Published in: LIPIcs, Volume 46, 19th International Conference on Principles of Distributed Systems (OPODIS 2015)

Abstract
Front Matter, Table of Contents, Preface, Committees, List of Authors
Cite as

19th International Conference on Principles of Distributed Systems (OPODIS 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 46, pp. 0:i-0:xvi, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016)

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@InProceedings{anceaume_et_al:LIPIcs.OPODIS.2015.0,
  author =	{Anceaume, Emmanuelle and Cachin, Christian and Potop-Butucaru, Maria},
  title =	{{Front Matter, Table of Contents, Preface, Committees, List of Authors}},
  booktitle =	{19th International Conference on Principles of Distributed Systems (OPODIS 2015)},
  pages =	{0:i--0:xvi},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-98-9},
  ISSN =	{1868-8969},
  year =	{2016},
  volume =	{46},
  editor =	{Anceaume, Emmanuelle and Cachin, Christian and Potop-Butucaru, Maria},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2015.0},
  URN =		{urn:nbn:de:0030-drops-66223},
  doi =		{10.4230/LIPIcs.OPODIS.2015.0},
  annote =	{Keywords: Front Matter, Table of Contents, Preface, Committees, List of Authors}
}
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