Securely Manage
Your Digital Assets
Learn the fundamentals of USDT, Bitcoin, and other digital assets — wallet security, risk management, and market analysis. Put safety and risk awareness ahead of returns.
- 29+
- Articles
- 7
- Sections
- 7×24
- Live Prices
- Safety · Compliance
- Focus
Academy
Seven Knowledge Sections
USDT Academy
Learn the fundamentals of USDT (Tether) and stablecoins: what USDT is, TRC20 vs ERC20, transfer guides, and safety essentials.
Crypto Academy
Bitcoin, Ethereum, blockchain technology, and Web3 basics — build a complete mental model of digital assets.
Market Analysis
Industry news, macro, and market trends — analyzed through historical data and a risk lens, not trading advice.
Wallet Center
Hot, cold, and hardware wallets — how they differ and how to use them, plus proper seed-phrase and private-key management.
Hardware Wallets
Hardware wallets like Trezor — intros, buying guides, tutorials, and FAQs. A vault for long-term holders.
Security Center
Anti-scam guides, phishing-site detection, private-key safety, and seed backups. Protecting assets starts with knowing the risks.
Beginner Guide
For complete beginners: basics, wallet setup, asset management, and risk control — a step-by-step path into digital assets.
OTC Exchange
Manual RMB ⇄ crypto exchange, 3% fee per order, KYC required.
Editor’s Picks
Popular Guides
What Is USDT? A Complete Beginner’s Guide to Stablecoins
USDT (Tether) is a stablecoin pegged to the US dollar, aiming for 1 USDT ≈ 1 USD. Learn how it works, what it’s used for, and its risks.
TRC20 vs ERC20: How to Choose Your USDT Network
Same USDT, different network: TRC20 or ERC20? Fees, speed, and compatibility differ a lot — and the wrong choice can lose your coins.
What Is Bitcoin? From Satoshi to ‘Digital Gold’
Bitcoin is the first decentralized digital currency. Learn its origin, supply cap, how it works, and where ‘digital gold’ comes from.
A Brief History of Crypto: From Bitcoin’s Birth to Today
The 2008 whitepaper, the 2010 pizza, Ethereum and smart contracts, DeFi and Web3 — the story of crypto in one read.
Understanding Crypto’s High Volatility: History and Risk
Why do crypto prices swing so hard? Where volatility comes from across past bull-bear cycles, and how ordinary investors can cope.
Hot Wallet vs Cold Wallet: How to Choose
Hot wallets are convenient, cold wallets are secure. Learn the differences, use cases, and how layered custody balances both.
OTC EXCHANGE
RMB ⇄ Crypto
Manual Exchange Service
Want to convert RMB into USDT or other digital assets? LinkUp Crypto offers one-on-one manual OTC exchange assistance — transparent process and clear quotes. We charge a 3% service fee.
- Processed after KYC identity verification
- Transparent per-order quotes, 3% of the transaction
- Compliant with local laws, compliance first
Latest Articles
Trezor vs Ledger: Which Hardware Wallet in 2026?
Open-source Trezor or Secure-Element Ledger? A full comparison of architecture, security model, backups, price, and who each suits.
How to Cash Out USDT to RMB: Methods & Compliance
What are the ways to convert USDT back to RMB? Understand OTC flows, fees, timing, and — most importantly — compliance and legal-risk notes.
What Is DeFi? A Beginner’s Guide to Decentralized Finance
What is DeFi? How do lending, trading, and liquidity mining work? Learn the core concepts, opportunities, and the risks you can’t ignore.
What Are Gas Fees? How to Save on Blockchain Costs
What are gas fees, why do they fluctuate, and why are they sometimes so high? Understand blockchain fees and how to pay less.
Airdrop Phishing: Spotting & Avoiding Fake Airdrop Scams
The lure of “free tokens” often hides a phishing trap. Learn fake airdrops, malicious approvals, and ten red flags to stay safe.
Is Bitcoin’s 4-Year Cycle Dead? The Halving-Cycle Debate
The “four-year bull-bear cycle” was once crypto gospel — but many now question it. A data-driven, level-headed look at the halving cycle.
How to Set Up Two-Factor Authentication (2FA)
Two-factor auth is the second lock on your account. Learn SMS vs TOTP (Google/Authy) vs hardware keys, and how to set it up and back it up.
What Is Shamir Backup (SLIP39)? Advanced Seed Protection
Split your seed into multiple shares so losing one or two is fine? How Shamir Backup (SLIP39) raises security with threshold sharing — and its caveats.
Hardware Wallets · Keep Your Assets Offline
A hardware wallet keeps your private keys offline and signs inside the device, so keys never touch the internet — a vault for long-term holders. Partner brand Trezor, open-source firmware, supports many digital assets.
FAQ
Frequently Asked Questions
What is LinkUp Crypto (链库)?
LinkUp Crypto (链库.com) is a digital-asset education platform offering fundamentals of USDT, Bitcoin, and Ethereum, wallet-security guides, hardware-wallet recommendations, and market analysis. Content centers on education, safety, and risk management, and is not investment advice.
What is USDT, and is it safe?
USDT (Tether) is a stablecoin pegged to the US dollar, aiming to keep 1 USDT ≈ 1 USD, commonly used as a trading medium, for hedging, and for transfers. Stablecoins are not entirely risk-free — there are reserve, de-peg, and regulatory risks. Use responsibly after understanding the risks.
How should I store digital assets securely?
For long-term holding, use a hardware wallet to keep keys offline, back up your seed phrase carefully, enable 2FA, never share your private key, and beware of phishing sites and scam links. See our Security Center and Wallet Center guides.
How is the LinkUp Crypto exchange service priced?
LinkUp Crypto provides manual OTC exchange assistance between RMB and crypto, charging a 3% fee per transaction. KYC verification is required and local laws must be followed. See the Exchange page for details.
Is this site’s content investment advice?
No. All content is for education and reference only and does not constitute investment, financial, or legal advice. Digital-asset prices are highly volatile — never invest money you cannot afford to lose.