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Internship on Blockchain at CEA List

Proof of Stake based Consensus and Leader Elections, a comparative study

Antonella Del Pozzo, PhD

Contact: [email protected]

(2)

CEA, from research to industry

French Alternative Energies and Atomic Energy Commission

CEA is not only Atomic Energy

(3)

Where are we

(4)

The LICIA team

Antonella Del Pozzo

Önder

Gurcan Agnès Lanusse

Francois Le Fevre

Yackholley Amoussou

Sara Tucci Head of the Lab

Zaynah Dargaye

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Blockchain

Untrusted party

Untrusted party

Untrusted party What we think it is

What it is

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Proof of work, proof of Stake

Proof of work: the next block is appended by the peer that solves the crypto puzzle.

Proof of stake based solutions: peers lock cryptomoney on the blockchain. More money are locked and higher is the stake.

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Pure Proof of Stake: Ouroborous

Untrusted party

Untrusted party

Untrusted party

Stake Stake

Stake

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Proof of Stake+Consensus: Tendermint

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Objective

to put in place a simulation environment in order to analyze the two

solutions, Ouroboros and Tendermint, focusing on the way the Proof of Stake is employed.

The objective is indeed, to stress and analyze under which conditions safety and/or liveness conditions can be violated.

In particular we will consider the impact of Proof of Stake mechanism misconfiguration.

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Phases

1. Preparing a state-of-the art about the Tendermint and Ouroboros blockchains;

2. Developing a simulation model (together with its automated tests) for the next block to append running on different nodes about the two approaches;

3. Derive conclusions about the safety and\or liveness guarantees and establish the effective differences that the two approaches bring to the blockchain.

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Competences

1. Being Master 2 in Computer Science/Engineering.

2. Knowledge about distributed systems in general.

3. Knowledge about the blockchain technology is a plus.

4. Good experience in programming in any language.

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