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【课堂-新手攻略】什么是限价单？

Limit orders are commands traders use to buy or sell assets at a determined price, providing precision in price control and reducing the need to monitor the market through automated execution. This article explores the basic concepts of limit orders, how they work, comparisons with stop orders, and their application in various trading strategies. Specifically, it outlines the steps for placing limit orders on the LBank platform, highlighting considerations for market liquidity and the uncertainty of order execution. By utilizing limit orders effectively, investors can better manage risk and achieve investment goals.

What Is a Limit Order?

【课堂-进阶教程】权威证明解释

Proof of Authority (PoA) is a blockchain consensus algorithm that relies on the credibility and identity of participants, offering an efficient solution for private chains while discarding the traditional cryptocurrency staking model. This mechanism depends on pre-approved trustworthy entities functioning as validation nodes to ensure network security and stability. PoA excels in enhancing performance, preserving privacy, and accommodating enterprise-level use cases, with successful implementation on Microsoft's Azure platform. However, it is important to consider its lower level of decentralization and potential risks of third-party intervention. Despite these concerns, Proof of Authority holds substantial application potential, particularly in industries where high trust and controllability are paramount.

What is Proof-of-Authority and Its Use Cases?

【课堂-进阶教程】布林线指标的解释

This article presents the origins and fundamental structure of the Bollinger Bands indicator, a three-line system derived from moving averages and standard deviation calculations that elucidates patterns in market price fluctuations and serves to gauge overbought/oversold conditions as well as volatility shifts. It delves into the application of Bollinger Bands within trading strategies, such as utilizing signals from price breakouts above or below the bands, band expansion and contraction, to inform buy/sell decisions. Additionally, it conducts a comparative analysis of the similarities and differences between Bollinger Bands and the Keltner Channel in terms of underlying principles and market interpretation.

Leveraging the Bollinger Bands Indicator for Trading

【课堂-新手攻略】女巫攻击(Sybil Attack)

This article thoroughly analyzes the definition, consequences, and how blockchain technology mitigates the impact of Sybil attacks in the cryptocurrency domain. Sybil attacks, threatening network security by creating a multitude of fake identities, lead to issues such as transaction delays and double-spending. Blockchain technology, through consensus algorithms like Proof of Work (PoW) and Proof of Stake (PoS), effectively increases the cost of attacks, enhancing network security. The article also discusses other security threats in the cryptocurrency domain, such as 51% attacks and replay attacks, underscoring the importance of continuous technological innovation and security measure updates.

Witches' Attack: A Threat to Blockchain Security

【课堂-进阶教程】什么是权益证明(PoS)？

Proof of Stake (PoS) is a blockchain consensus mechanism that relies on the value of held tokens rather than computational power competition, with the aim of enhancing energy efficiency and network performance. The intricate operation of this mechanism encompasses token staking for validator eligibility, random selection of validators, transaction verification, and reward distribution. PoS has been extensively adopted in blockchain projects such as Ethereum, Solana, Avalanche, Polkadot, Cosmos, and Tezos, demonstrating high adaptability, energy conservation, enhanced decentralization, and superior scalability among its numerous advantages. However, it confronts challenges like fork resolution complexities, participation barriers, and susceptibility to 51% attacks. Despite these hurdles, PoS and its derivative variants, including DPoS, NPoS, and PoSA, continue to propel the evolution and innovation of blockchain technology.

What Is Proof of Stake (PoS)?

【课堂-新手攻略】关于流动性的解释

This article discusses the definition of liquidity, its significance within the cryptocurrency domain, and the key indicators for assessing market liquidity, including 24-hour trading volume, order book depth, and the bid-ask spread. The piece highlights that liquidity is central to the functioning of financial markets, especially critical for cryptocurrency markets. High liquidity ensures assets can be bought and sold quickly, reducing price slippage and contributing to the healthy development of the market. It explains the impact of liquidity on investor decisions and advises readers to consider the role of limit stop-loss orders and iceberg orders when evaluating the market.

Understanding the Nature and Importance of Liquidity

【课堂-深度研究】拜占庭容错

This paper expounds on the significance of the Byzantine Generals Problem in understanding and designing consensus mechanisms for distributed systems, and delves into the concept of Byzantine Fault Tolerance (BFT) and its implementation pathways within contemporary blockchain technology. It illustrates how mechanisms such as Bitcoin's Proof of Work (PoW), along with other consensus algorithms like Practical Byzantine Fault Tolerance (PBFT), Proof of Stake (PoS), and Delegated Proof of Stake (DPoS), can be leveraged to ensure the secure and stable operation of blockchain networks amidst unreliable communication channels and potential node treachery. Additionally, the article presents real-world application cases of BFT in domains including finance, cloud computing, supply chain management, public e-governance services, and the Internet of Things (IoT), emphasizing the pivotal role this technology plays in enhancing the reliability and security of distributed systems in the real world.

Byzantine Fault Tolerance Explained

【课堂-进阶教程】燃烧证明解释

Proof of Burn is a green and sustainable consensus mechanism in the world of digital currencies. It replaces energy-intensive mining practices by having participants destroy their coins as a display of network commitment and contribution. This mechanism trades permanent coin destruction for virtual mining power, reducing energy usage, minimizing hardware dependence, and enhancing market scarcity. It also reshapes economic incentive structures. However, challenges remain in scalability, environmental impact, verification speed, and transparency. These issues are expected to be addressed through technological innovations and advancements in the future.

Must-Know Facts About Proof-of-Burn

【课堂-进阶教程】延时工作量证明

This article delves deeply into the workings of dPoW, exemplified by Komodo, elucidating how it harnesses the Bitcoin network for cross-chain backup and fortified security. By periodically anchoring block hashes onto the Bitcoin blockchain, dPoW erects a formidable security barrier, significantly enhancing the resistance of UTXO-based blockchains to 51% attacks, thereby demonstrating substantial advantages in preserving the integrity and immutability of blockchain data.

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