A Survey on Efficient Parallelization of Blockchain-based Smart Contracts

Abstract

The main problem faced by smart contract platforms is the amount of time and computational power required to reach consensus. In a classical blockchain model, each operation is in fact performed by each node, both to update the status and to validate the results of the calculations performed by others. In this short survey we sketch some state-of-the-art approaches to obtain an efficient and scalable computation of smart contracts. Particular emphasis is given to sharding, a promising method that allows parallelization and therefore a more efficient management of the computational resources of the network.

A New ECDLP-Based PoW Model

“…The existence of different types of blocks in blockchains has become common, as it is considered suitable for tackling the problem of scalability [49]. Here, we pursue this idea by designing a scheme with two different types of blocks, but possibly more sophisticated solutions may be taken under consideration for obtaining further worthwhile properties.…”

Cob: a consensus layer enabling sustainable sharding-based consensus protocols

“…Some of them are the block size increase, the use of off-chain state channels, segregated witness (SegWit) [9], the use of directed acyclic graphs as in [14] and sharding. Among these, sharding seems to be the most promising [8,15], a description of the main platforms adopting this technique is presented in [10].…”

Indicador de integridad de datos para un escenario de contratos futuros en una Blockchain

“…En ese sentido la integridad del dato de oráculo en contratos inteligentes es un proceso crítico que requiere una revisión detallada y medible teniendo en cuenta estándares que permitan comprender y validar la integridad del dato [9]. Esto significa que los datos deben ser validados desde la procedencia del oráculo verificando fuentes confiables antes de ser incluidos en el contrato inteligente garantizando que el contrato se ejecute de manera efectiva y justa para todas las partes involucradas [10], es por ello que este trabajo presenta el siguiente orden, en la sección dos presenta la pregunta de investigación e hipótesis, la sección tres presenta el estado del arte, la sección cuatro presenta los objetivos la sección cinco presenta referencias bibliográficas.…”