Blockchain Technology

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Blockchain Technology (Français) / Concept en Anglais (Anglais) / Concept en Arabe (Arabe)

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Traductions

Définition

Domaine, Discipline, Thématique

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Blockchain Technology / Centralized Systems / Distributed Systems / Distributed Ledger Technology (DLT) / Distributed Ledger in Bitcoin Network / Bitcoin / Ethereum / Non-Public Blockchains / Big Consortia /

Justification

Définition écrite

• System

A collection of interacting/interrelated entities structured as a whole

1. Organized for a common purpose
2. Entities may include
3. Human
4. Machines
5. Procedures for different functions
6. Interfaces to the environment (input/output)
7. A system stays in some “state” at any given time
8. Off duty. Under maintenance/update
9. Operational (hopefully correctly as designed)

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Centralized Systems Homogeneous Easier to design, operate, and maintain Single point of control & authority Multiple users share same set of resources Single point of failure (- Honest, - Malicious) Distributed Systems A group of independent systems (nodes) working together for a purpose Connected & communicate to each other via a network Each operates concurrently Can continue correct operations even if some nodes fail

Blockchain Technology - Historique (+)

Définition graphique

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  Blockchain Technology

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Concepts ou notions associés

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Blockchain Technology / Bitcoin Mechanics / Ethereum / PoW vs PoS consensus / consensus models / Enterprise Blockchain / Blockchain Scaling / Stablecoins /

Blockchain Technology - Glossaire / (+)

Exemples, applications, utilisations

Benefits and Challenges • Performance • Scalability • Redundancy (for fault-tolerance) • How to ensure consistency among nodes of a distributed system? • Even if some aren’t reliable nor honest? • Trust without trust? • Requires a way to reach “consensus” Example: Database Systems • For a centralized database system, one central entity handles all requests and data processing • Data updates simple and quick • Cheaper to manage and maintain • Performance bottleneck under high concurrent requests • Single point of failure Distributed Database System • A group of databases cooperating together to provide single data view to users • Fault-tolerant • Handle more concurrent load • Requires “trust” among nodes (• Not a problem if owned by a single enterprise, • For nodes not fully trusting each other, a “consensus” protocol is required to keep a consistent view of data) Distributed Ledger Technology (DLT) • A type of distributed database system • Immutable, append-only database of transactions (for example, exchanges of assets or data) • Ledgers are replicated, synchronized and shared across all nodes in the distributed, peer-to-peer network • Nodes reach consensus on transaction updates to its own copy of ledger, thus maintaining consistent ledger state • Via consensus protocol, this is achievable without central authority or trusted 3rd party mediator (+)

Erreurs ou confusions éventuelles

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Idées ou Réflexions liées à son enseignement

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Education: Autres liens, sites ou portails

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Bibliographie

Pour citer cette page: (Technology)

ABROUGUI, M & al, 2022. Blockchain Technology. In Didaquest [en ligne]. <http:www.didaquest.org/wiki/Blockchain_Technology>, consulté le 22, novembre, 2024

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