What Is a Smart Contract? How Does It Run on a Blockchain? Understand It All in One Article, from How It Works to Real-World Applications

In the Web3 world, smart contracts are the foundation of many blockchain applications.

Decentralized finance (DeFi), NFTs, on-chain payments, and DAO governance may all rely on smart contracts to handle some of their business logic.

But smart contracts are not artificial intelligence capable of independent thought, and deploying code on-chain does not mean the entire system is necessarily secure.

To understand smart contracts, we first need to clarify wh

NVIDIA’s B300s are really worth that much? A single NVIDIA B300 rack is being hyped up to 20 million, with a net profit of 14 million per unit. This compute power market is absolutely insane!

At these prices, moving 5 B300s would put the total over 100 million. A lot of people only know that compute cards are valuable and think they can make easy money just flipping them. But finding a supply channel is really difficult.

On one hand, the global compute shortage is massive, prices are getting more and more outrageous, and gray-market channels are springing up everywhere. On the other, regulat

Can it still go up? Should I close my position?

Blockchain Is Not a Magic Ledger: How Is a Transaction Verified, Recorded, and Shared?

Many people have heard of blockchain and know it is related to Bitcoin, smart contracts, and Web3, but few truly understand how it works.

The key to blockchain is not simply storing data in a block. It is having multiple participants verify and record data according to shared rules, and using specific mechanisms to maintain a consistent ledger.

1. Understanding Blockchain Through a Single Transaction

Suppose you transfer funds to another wallet.

First, the transaction is initiated. The wallet uses the r

They say a shop can be passed down for three generations
That Beijing SOHO storefront that cost 20 million back then
Is now being offloaded for 12 million
And it’s right in the heart of the East Second Ring
A shop passed down for three generations; people may be gone, but the shop remains

What do you really own when you buy an NFT? The image, the copyright, or a record on the blockchain?

When many people first encounter NFTs, they understand them as digital images that can be purchased, collected, and resold.

But the core value of an NFT is not just the image itself; it lies in recording the ownership and transfer of a specific token through blockchain. The real question to clarify is: what rights do you actually obtain after purchasing an NFT?

I. Owning an NFT does not mean owning the copyright to the work

Purchasing an NFT usually means you gain control of that token on t

What Exactly Are Wallet Seed Phrases and Private Keys? Why Are They So Important?

In the Web3 world, creating a wallet is easy, but not everyone truly understands who controls it.

Many people know that seed phrases must not be disclosed, but may not clearly understand how they differ from private keys or why a wallet can still be recovered after losing a phone.

To understand these questions, we first need to clarify three concepts.

I. What Is a Private Key?

A private key is a secret piece of information used for cryptographic signing. In many blockchain wallets, a private key can authoriz

11.12 ETH Silk Road
#美国10月CPI全面超预期
【Market Analysis】
After rallying to the period high of 2103.62, the price came under pressure and pulled back, breaking below the Bollinger midline. The channel turned downward, with the price falling to a low of 2034.55 before stabilizing and recovering slightly. MACD is currently below the zero line. Although bearish momentum has eased, the trend structure has not yet reversed. The market is currently in a low-level consolidation and bottom-building phase after a sharp drop, serving as a pause after the decline. Overhead moving-average resistance remains h

Why can a trade look profitable, yet the final account return still be disappointing?

In cryptocurrency trading, many people encounter this situation:

After buying, the price does rise, and the sale shows a profit, but when they check their account later, the actual return is not as high as expected.

The problem may not be with judging the direction. Rather, the profit you see may not be the same as the return that ultimately remains in your account.

I. A price increase does not mean all costs have been deducted

The actual result of a trade usually needs to take the following into account

Before Cross-Chain Transfers, Don’t Just Look at Fees: These 5 Checks Matter More

In the Web3 world, cross-chain transfers let users move assets between different blockchains and participate in applications, while bringing multi-chain ecosystems closer together.

But cross-chain transfers aren’t as simple as choosing a network, entering an address, and clicking confirm.

A successful cross-chain transaction doesn’t mean the entire process is risk-free.

If you’re preparing to make a cross-chain transfer, here are five things worth checking in advance.

1. Confirm the source chain and destinat

#AllThingsAreNumbers

The order of the universe lies in the harmony of numbers; everything in the world can be explained through numbers.

Is the AI world about to mint another fortune? Anthropic’s IPO valuation targets $1.4 trillion—can 100 USDT get you in?

The AI world has been buzzing lately! Anthropic, the company behind Claude, is officially moving forward with its IPO, with a reference fully diluted valuation of up to $1.4 trillion and a reference offering price of $70–78 per share. Those numbers make you say: AI hasn’t taken over the world yet, but its valuation has already taken over our wallets! 😂
Gate is launching its third IPO subscription, allowing participation with USDT, starting at just 100 USDT. If your subscrip

11.12 ETH faced resistance on the rebound near 2080. Consider a light short position, targeting 2020/2005.
For those looking to go long, wait for price to stabilize near 2005 before entering. Set a stop at 1970, with targets at 2050/2080.
On the 1H chart, ETH plunged from a high of 2449.95, briefly dipping to 2003.57 before rebounding and then falling back to around 2053.
The moving averages are still trending downward overall, with resistance overhead at 2070/2100. Bears still have the upper hand in the short term. #ETH $ETH

Last week, I accompanied a friend through the ordeal of proving themselves; this morning, I independently lit up thirteen attestations—thirteen credentials. The same verification process, yet two entirely different experiences.
Back then, the platform demanded transaction histories and asset details. My friend had all the supporting evidence, yet still had to capture every page and submit it as a bundle. Neither side came away satisfied: the verifier worried the records might be hard to authenticate, while the submitter feared their private data would leave a trail in a foreign system, impossi

11.12 Achen ETH Public Strategy
【Short Strategy】$ETH
　　Entry range: around 2080-2100
　　Stop-loss level: 2120
Zhiying's tiered take-profit targets
　　First target: 2063
　　Second target: 2044
Trend target: 2027
Long-term target: below 2004

【Market Analysis】: The Bollinger Bands are opening downward, and the MACD has formed a low-level golden cross below the zero axis. Overall, it is moving in line with BTC; yesterday's levels remain in use.

【Trading Recommendation】: Follow BTC.

【Long Strategy】
Entry range: 2007-2027
　　Stop-loss level: 1988
Zhiying's tie

CPI came in above expectations, putting U.S. stocks and BTC under renewed pressure. U.S. market analysis: The Nasdaq rose 1.6%, but rates already have the knife out? The broader market looks euphoric. The Nasdaq rose 1.60%, the S&P 500 gained 1.31%, and the Philadelphia Semiconductor Index surged 6.85%. CoreWeave’s earnings blew the doors off, sending shares up 24.71%; Micron rose 11.89%, and AMD gained 7.32%. The AI party is back on, and it feels like you’d be crazy not to pile in. But here’s the contrarian angle: everyone is focused on AI, while rates hold the real pricing power. October CPI

I propose new CEO

Waiting for the main rally to work its magic and bring it back to life...