Mecanismele de consens blockchain

Sfetcu, Nicolae Mecanismele de consens blockchain. IIT & C, 2023, vol. 2, n. 2, pp. 26-32. [Journal article (Paginated)]

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English abstract

In principle, any node within a blockchain network can propose adding new information to the blockchain. To validate that this addition of information (eg a transaction record) is legitimate, the nodes must reach some form of agreement. This is where a "consensus mechanism" comes into play. In short, a consensus mechanism is a predefined specific (cryptographic) validation method that ensures correct sequencing of transactions on the blockchain. In the case of cryptocurrencies, such sequencing is necessary to address the problem of "double spending" (ie the problem that the same payment instrument or asset can be transferred multiple times if the transfers are not centrally recorded and controlled.

Romanian abstract

În principiu, orice nod din cadrul unei rețele blockchain poate propune adăugarea de informații noi în blockchain. Pentru a valida dacă această adăugare de informații (de exemplu o înregistrare de tranzacție) este legitimă, nodurile trebuie să ajungă la o formă de acord. Aici intră în joc un „mecanism de consens”. Pe scurt, un mecanism de consens este o metodă de validare specifică (criptografică) predefinită care asigură o secvențiere corectă a tranzacțiilor pe blockchain. În cazul criptomonedelor, o astfel de secvențiere este necesară pentru a aborda problema „dublei cheltuieli” (adică problema că același instrument de plată sau activ poate fi transferat de mai multe ori dacă transferurile nu sunt înregistrate și controlate centralizat.

Item type:	Journal article (Paginated)
Keywords:	tehnologia blockchain, blockchain, mecanisme de consens, proof of work, proof of stake
Subjects:	J. Technical services in libraries, archives, museum. L. Information technology and library technology L. Information technology and library technology > LH. Computer and network security.
Depositing user:	Nicolae Sfetcu
Date deposited:	10 Jul 2024 06:16
Last modified:	10 Jul 2024 06:16
URI:	http://hdl.handle.net/10760/45874

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