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【课堂-新手攻略】什么是区块链共识算法？

This article delves into the pivotal role of consensus algorithms as the foundation of trust in the blockchain world and their operation mechanism in cryptocurrencies. It reveals how mainstream consensus mechanisms such as Proof-of-Work (PoW) and Proof-of-Stake (PoS) ensure consistency, security, and fairness of distributed ledgers. The article discusses how PoW builds a security barrier through mining competition and how PoS achieves decentralized decision-making based on staked tokens. It also briefly outlines innovative practices of multi-consensus algorithms, emphasizing the crucial role of consensus mechanisms in balancing security, efficiency, and sustainability.

What Is a Blockchain Consensus Algorithm?

【课堂-进阶教程】工作量证明(PoW)与权益证明(PoS)对比

This article delves into the origins and evolution of consensus mechanisms in blockchain technology—namely, Proof of Work (PoW) and Proof of Stake (PoS). Initially, Bitcoin relied on PoW to ensure transaction validity and security. However, with industry growth and technological advancements, PoS has gained popularity due to its energy efficiency and enhanced scalability. The piece elaborates on how PoS replaces hardware-based computational power races in PoW by having stakeholders stake their cryptocurrencies. It highlights the significant implications of Ethereum's planned transition to PoS, which is poised to propel the global adoption of PoS and foster sustainable innovation within the blockchain domain.

PoW vs PoS: The "Rivalry" of the Two Consensus Mechanisms

【课堂-新手攻略】区块链的优点和缺点

Blockchain technology, with its distributed architecture, immutability of data, and trustless nature, demonstrates tremendous potential in enhancing data security and transaction efficiency. However, it also faces challenges including the threat of 51% attacks, difficulty in modifying data, the risk of losing private keys, inefficiency, and increased storage costs. Recent technological advancements, such as Proof of Stake mechanisms, layering solutions, enhanced data privacy measures, and storage optimization strategies, are continuously improving these drawbacks, driving blockchain technology towards more efficient, secure, and scalable directions. In the future, as technology continues to innovate and optimize, blockchain is expected to play a significant role in a wider range of fields, bringing more profound changes to the economic and social landscape.

Pros and Cons of Blockchain

【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.

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