Blockchain and Smart Contracts: Vulnerabilities That Still Occur in the Proof of Stake Protocol

• Alison Winkert Dos Santos UDC
• Luciano Santos Cardoso UDC http://orcid.org/0009-0007-2998-8066
• Alessandra Bussador UDC https://orcid.org/0000-0002-5900-9398

DOI: https://doi.org/10.5753/latinoware.2024.245352

Abstract

Blockchain technology has evolved significantly since its inception, becoming a central pillar in the development of cryptocurrencies and decentralized systems. Initially, it provided a secure and immutable structure for digital transactions, leading to the creation and implementation of smart contracts that automate agreements and operations without the need for intermediaries. Over time, new methods have emerged to ensure the security and efficiency of these transactions, such as Ethereum's transition in 2022 from the Proof of Work (PoW) mechanism to Proof of Stake (PoS).

Keywords: Blockchain, Smart Contracts, Vulnerability

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