Advancing Towards Green Blockchain: A Practical Energy-Efficient Blockchain Based Application for CV Verification
- URL: http://arxiv.org/abs/2410.20605v1
- Date: Sun, 27 Oct 2024 21:32:20 GMT
- Title: Advancing Towards Green Blockchain: A Practical Energy-Efficient Blockchain Based Application for CV Verification
- Authors: Gabriel Fernández-Blanco, Iván Froiz-Míguez, Paula Fraga-Lamas, Tiago M. Fernández-Caramés,
- Abstract summary: This article describes a green blockchain solution and quantifies energy savings when deploying the system on traditional computers.
It is proposed a solution for tackling the problem of academic certificate forgery, which has a significant cost to society.
This article compares the performance of a traditional computer and two SBCs (a Raspberry Pi 4 and an Orange Pi One), showing that is possible to make use of the latter low-power devices.
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- Abstract: Blockchain has been widely criticized due to the use of inefficient consensus protocols and energy-intensive mechanisms that derived into a global enormous power consumption. Fortunately, since the first blockchain was conceived in 2008 (the one that supports Bitcoin), hardware and consensus protocols have evolved, decreasing energy consumption significantly. This article describes a green blockchain solution and quantifies energy savings when deploying the system on traditional computers and embedded Single-Board Computers (SBCs). To illustrate such savings, it is proposed a solution for tackling the problem of academic certificate forgery, which has a significant cost to society, since it harms the trustworthiness of certificates and academic institutions. The proposed solution is aimed at recording and verifying academic records (ARs) through a decentralized application (DApp) that is supported by a smart contract deployed in the Ethereum blockchain. The application stores the raw data (i.e., the data that are not managed by the blockchain) on a decentralized storage system based on Inter-Planetary File System (IPFS). To demonstrate the efficiency of the developed solution, it is evaluated in terms of performance (transaction latency and throughput) and efficiency (CPU usage and energy consumption), comparing the results obtained with a traditional Proof-of-Work (PoW) consensus protocol and the new Proof-of-Authority (PoA) protocol. The results shown in this paper indicate that the latter is clearly greener and demands less CPU load. Moreover, this article compares the performance of a traditional computer and two SBCs (a Raspberry Pi 4 and an Orange Pi One), showing that is possible to make use of the latter low-power devices to implement blockchain nodes for proposed DApp, but at the cost of higher response latency that varies greatly depending on the used SBCs [...]
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