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【课堂-进阶教程】混合PoWPoS共识机制详解

This article delves into the two predominant consensus mechanisms in blockchain—Proof of Work (PoW) and Proof of Stake (PoS)—and how they ensure the security and decentralization of the network. PoW relies on high-energy computational races among miners for security, whereas PoS grants block generation rights based on participants' held token quantities. Furthermore, it examines the implementation of the hybrid PoW/PoS consensus mechanism within the Decred project, effectively merging the strengths of both models to achieve heightened security levels and broader community engagement, serving as an inspiration for innovation in blockchain consensus design.

What Is Hybrid PoW/PoS Consensus Mechanisms?

【课堂-新手攻略】什么是技术分析？

This article delves into the core research method in financial markets, technical analysis, which predicts future trends by analyzing historical price movements and other market statistics of assets. Unlike fundamental analysis, which focuses on intrinsic value, technical analysis assumes that all relevant information is already reflected in market prices. The article outlines the development of technical analysis from early manual recording to modern intelligent analytical tools, and lists a series of important technical analysis indicators such as moving averages, RSI, Bollinger Bands, and MACD, explaining how they help traders identify market sentiment, determine trends, and generate buy/sell signals. At the same time, the article points out the controversies and limitations of technical analysis, emphasizing the need to combine fundamental analysis and risk control in practical applications to adapt to different investment strategies and market environments.

What Is Technical Analysis?

【课堂-新手攻略】区块链用例：医疗保健

This article explores the extensive potential of blockchain technology in the healthcare industry, including enhanced data storage security, efficient information sharing, and improved medical record management. It also identifies current challenges regarding regulations, costs, and technology. Looking forward, the paper envisions that blockchain will powerfully drive innovation and progress in the healthcare sector once these hurdles are overcome.

Innovative Blockchain Applications in Healthcare

【课堂-新手攻略】什么是社会工程？

This article explores the evolution of social engineering from its origins in psychological and sociological research to its current state as a crucial tool for information theft and fraud through manipulation of human psychology. The various tactics employed in cyberspace are detailed, including phishing, malware, and a particular focus on new challenges in the blockchain and cryptocurrency fields where emotions such as greed and fear are cunningly exploited by scammers to deceive investors. Finally, necessary strategies for defending against social engineering attacks are proposed, emphasizing the importance of enhancing cybersecurity literacy, rigorously identifying true and false information, and understanding the security mechanisms of cryptocurrencies.

What Is Social Engineering?

【课堂-新手攻略】Blockchain应用案例

Blockchain technology has significant applications in fields such as finance, supply chain, medical care, copyright, and the Internet of Things. It has played an important role in cryptocurrency, cross-border payments, supply chain finance, logistics tracking, anti-counterfeiting traceability, electronic health records, drug traceability, digital copyright management, art trading, equipment management, data trading, etc., improving the industry's transparency, security and efficiency.

Blockchain application cases

【课堂-深度研究】zk-SNARKs和zk-STARKs解释

This article delves into the core cryptographic concept of zero-knowledge proofs, illustrated through a vivid allegory of Alibaba's cave, where a prover can convince a verifier of a statement's validity without revealing any specifics. Focusing on blockchain applications, we discuss the characteristics and advantages of two zero-knowledge proof implementations – SNARKs, which excel in high-performance scenarios with their efficiency and conciseness, and STARKs, offering a transparent and trustless setup for security-conscious users. Despite distinct challenges, both technologies exhibit immense potential to enhance privacy in blockchain and streamline transaction verification, shaping the future of zero-knowledge proof advancements.

zk-SNARKs and zk-STARKs Explained

【课堂-进阶教程】什么是量化宽松（QE）？

This article introduces the fundamental principles and implementation context of quantitative easing as an unconventional monetary policy tool employed by central banks. Its aim is to stimulate market vitality and domestic demand growth by significantly increasing the money supply and suppressing long-term interest rates through large-scale purchases of financial assets. In global practice following financial crises, QE policies have achieved certain success in enhancing market liquidity and averting economic downturns. However, their effectiveness is complex and contentious, with potential risks including asset bubbles and surging debt levels. The article emphasizes the need for cautious application of QE policies tailored to specific circumstances of different economies, while closely monitoring both their advantages and challenges.

What Is Quantitative Easing (QE)?

【课堂-新手攻略】区块链运用案例：慈善

This article examines how blockchain technology is revolutionizing the charity model by building a "digital transparency" mechanism. By leveraging its distributed ledger and immutable nature, it enhances transparency and efficiency in the charitable sector. The specific applications of blockchain in charity are detailed, such as ensuring full transparency throughout the donation process, streamlining procedures, and increasing public trust. The paper also reveals the current challenges and limitations, including value volatility risks, security issues, and regulatory compliance requirements. Despite these challenges, digital charity holds promise as an important trend in the development of the charity industry, with successful real-world cases and continuous improvement of the legal environment.

How Blockchain Can Empower Charitable Causes

【课堂-进阶教程】什么是公钥密码学？

Public key cryptography is a pivotal technology in the realm of information security, revolving around an asymmetric key system comprised of a public key and a private key. Unlike symmetric encryption's single-key approach, this cryptographic method enables information to be encrypted using a public key, with decryption limits of authority exclusively held by the corresponding private key holder. This effectively addresses the challenge of key distribution and significantly enhances the safety of data transmission. The RSA algorithm, a major milestone in this field, establishes a practical public key infrastructure based on the difficulty of prime factorization of large numbers. Beyond its application in data encryption, public key cryptography plays a critical role in digital signatures, identity verification, and has become an indispensable component of modern cybersecurity frameworks.

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