What Is Token Approval, and Why Can a Single Signature Put Assets at Long-Term Risk?

In the DeFi world, you might only want to swap tokens once, provide liquidity once, or use a new decentralized application.

During the process, your wallet may ask you to confirm an approval transaction.

Many people see a familiar token name and what looks like a normal operation, then click confirm. But the questions that really matter are: Who are you authorizing? How many tokens can they use? Will this permission remain in effect after the transaction is complete?

Understanding these three questions is

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During a BTC Pullback, How Can You Tell a Normal Correction from a Trend Reversal?

One of the most common mistakes people make when trading BTC is treating every drop as a trend reversal. As soon as the price pulls back, they rush to close their positions or even open short positions. But sometimes the market is simply undergoing a normal correction during an uptrend, after which the price strengthens again.

So, how can you distinguish a normal pullback from a genuine trend reversal?

First, watch the structure of highs and lows. In a healthy uptrend, the price usually forms progressively hi

I came across this news about Germany’s largest bank tonight
Deutsche Bank
Ticker: DB
Crypto custody for corporate and institutional clients
Officially opened to paying clients today
Initially supports BTC and ETH
As well as USDC, EURC, and EURAU
The bank will custody wallets and private keys
Retail clients are not included yet
Application filed in June 2023
Took about 41 months
The license covers about 30 European Economic Area countries
Also signed a digital asset cooperation memorandum with its asset management arm on the same day
Asian financial centers will have to wait until 2027 for the

How Do You Find BTC Support and Resistance Levels? Master 4 Practical Methods!

In BTC trading, support and resistance are among the most fundamental and practical concepts in technical analysis. But many beginners simply draw a few horizontal lines and assume they’ve found key levels. In reality, support and resistance levels that are truly useful need to be assessed by combining price structure, trading volume, and market reactions.

First, observe historical highs and lows. If BTC rises to a certain area multiple times and then pulls back, that area may form resistance; if the price falls t

Why can backtest performance be great while real trading turns out completely different?

A trading strategy performing well on historical data does not mean it will achieve the same results in future markets.

Backtesting can help us evaluate trading rules, but it relies on historical data, model assumptions, and execution conditions. When these conditions differ from those in real markets, backtest returns may not be reproducible.

What factors are worth paying attention to?

1️⃣ Data quality determines how reliable a backtest is

Historical data may contain gaps, abnormal prices, or timesta

BTC News Analysis: How Can Market News Improve Trading Decisions?

In BTC trading, many people study candlestick charts, MACD, and RSI every day, but overlook an important factor that can significantly affect market movements: news.

Sometimes, BTC suddenly rises or falls in a short period not because technical indicators signaled it in advance, but because new policy developments, economic data, or changes in fund flows have emerged. News developments can quickly change investor expectations and, in turn, affect the balance of buying and selling pressure.

So, how should you use news analysis

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Take another look at the market
$NVDA is currently $168.8. Although it's considered an auspicious number by Chinese people, Nvidia is actually plunging😭

How Should Beginners Start Investing in Cryptocurrency? A Practical Guide from 0 to 1

When entering the cryptocurrency market, many people’s first instinct is to look for the next token to rise, study short-term market trends, or find a trading strategy that can generate quick profits.

But for beginners, the truly important first step is not deciding what to buy, but developing the right understanding of investing.

The cryptocurrency market is highly volatile. Some assets also face issues such as insufficient liquidity, project failure, platform risks, and security vulnerabilities. Without

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$ONE Currently trading at 0.001555, down 19.31% over 24H and nearing the 24H low. The 1H and 4H trends are both weak, with price below the EMA20. Volume is only 0.13x the average, and the rebound is seeing little support. If volume picks up and price holds above the 0.001956 resistance level, the strength of the recovery can be monitored; if it breaks below the 0.001534 support level, weakness may persist. Key points to review are whether price can hold firmly above 0.001956 and whether it can recover after breaking below 0.001534. The market is volatile; for observation only.

Only by carefully assessing the risks is it buying the dip; entering blindly is gambling.
[Position Details]:
$BTC Last night$ZEC saw a plunge, falling from a high of 1199 to 993.02 and breaking below the round-number level. After a second test of the bottom, the ZEC short position was closed. At the same time, BTC broke below its previous low and retested the bottom at 72691.0. Since it had broken below the previous low of 72808.3, the short outlook was maintained and we chose to wait. A third test of the bottom formed an M-shaped structure, and short-term support was judged to be forming ar

What Is Cross-Chain? How Does It Connect Different Blockchains? Understanding the Value and Risks of Multi-Chain Interoperability, from Technical Principles to Practical Applications

As the blockchain ecosystem continues to develop, Ethereum, Solana, and other networks are gradually building their own applications, assets, and developer communities.

However, different blockchains usually have independent state records, consensus mechanisms, and execution environments. Assets or data on one chain cannot necessarily be used directly on another.

This is the problem cross-chain technology aims

How Is AI Changing Web3? What Really Deserves Attention Goes Beyond Trading Tools

When artificial intelligence and blockchain come together, many people first ask: Can AI help predict prices, trade automatically, or find the next hot token?

These are certainly applications worth watching, but they are not the whole story.

The combination of AI and Web3 could also change on-chain data analysis, digital identity, community governance, smart contract development, and how people interact with digital services.

The key question is: Which capabilities are already practical, and which are still b

What key information should you check before using a DApp?

In the Web3 world, using a decentralized application (DApp) may require only connecting a wallet, signing a message, or confirming a transaction.

The action may look simple, but there is much more to consider:

Who developed the app? Can its smart contracts be trusted? Are the permissions it requests reasonable? If something goes wrong, do you understand the risks you are taking on?

Don’t assume a DApp is safe just because it works normally; and don’t assume all risks have disappeared just because it has an audit report.

Before con

What Are Stablecoins? Why Have They Become Important Web3 Infrastructure? From Value Pegs to Practical Applications, Understanding How Stablecoins Work and Their Risks

In the cryptocurrency market, Bitcoin and Ethereum are often subject to price volatility, while stablecoins aim to provide digital assets with relatively stable prices.

Whether for trade settlement, cross-border payments, DeFi lending, or moving assets between different blockchain networks, stablecoins are playing an increasingly important role.

But stablecoins are not risk-free. Understanding how they can maintain their pric

$BTC Pay attention: the market may be at a pivotal turning point.

Bitcoin is on the verge of recording its sixth consecutive weekly loss. If confirmed, this would rank among the longest losing streaks in its history.
But consider it from another angle: could this extreme weakness be building up to an astonishing reversal?
After enduring six weeks of continued declines, could Bitcoin see one of the fiercest winning streaks in its history?
What happens next may leave everyone stunned.👀🚀
Risk warning: The above is solely my personal opinion and does not constitute investment advice. The crypto

What Is a DAO? How Does It Achieve Decentralized Governance? Understanding the Opportunities and Risks of Web3 Community Self-Governance, from Organizational Mechanisms to Practical Applications

In the Web3 world, a DAO (Decentralized Autonomous Organization) offers an organizational approach that differs from traditional corporate management: through public rules, community proposals, voting mechanisms, and smart contracts, participants collectively decide the organization’s direction.

From DeFi protocol governance and NFT communities to open-source projects and public fund management, DAOs