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In the volatile world of cryptocurrency in 2025, USDT (Tether), as the largest stablecoin globally, has become a "safe haven" and "transit point" for digital asset investment. This article will provide you with a complete tutorial suitable for beginners, mastering the purchasing, trading, and appreciation techniques of USDT from scratch.

1. Understanding USDT: The Stable Cornerstone of the Digital Currency World#

USDT is a stablecoin issued by Tether that is pegged to the US dollar at a 1:1 ratio, providing price stability to the cryptocurrency market[[1]]. As of 2025, the total circulation of USDT has surpassed $155 billion, accounting for 62% of the stablecoin market, making it the undisputed industry leader[[2]].

Three Core Advantages of USDT:#

1. Value Stability: Each USDT is backed by Tether's dollar reserves, with monthly reserve reports being publicly transparent.
2. Multi-Chain Support: Supports various blockchain protocols such as TRC-20, ERC-20, and BEP-20 to meet different needs.
3. Global Circulation: Covers over 180 countries and regions, enabling seamless cross-border transfers 24/7.

2. Comparison of Mainstream Stablecoins in 2025#

3. Four Steps for Beginners#

Step 1: Register an Account on the Trading Platform#

First, visit OKX Exchange to complete your registration:

• Create an account using your email or phone number.
• Set a strong password (recommended to be over 12 characters, including uppercase and lowercase letters, numbers, and special symbols).
• Complete identity verification (KYC) to enhance account security and trading limits.

Step 2: Download and Install the Trading App#

Once registered, immediately download the official trading client:

• Supports iOS and Android systems.
• Enable two-factor authentication (2FA) to enhance security.
• Familiarize yourself with the interface layout and functional modules.

Step 3: Purchase Your First USDT#

It is recommended for beginners to use the quick purchase feature:

1. After logging into the app, go to the "Quick Buy" page.
2. Choose a payment method (supports Alipay, bank cards, etc.).
3. Enter the purchase amount, and the system will automatically display the amount of USDT you will receive.
4. Confirm the transaction, and USDT will be automatically credited to your funds account.

Large users can choose C2C trading:

• Filter quality merchants in the fiat trading area.
• Compare quotes, transaction volumes, and user reviews.
• Trade in batches to reduce risk.

Step 4: Trading and Appreciation of USDT#

Spot Trading (recommended for beginners):

• Search for mainstream trading pairs: BTC/USDT, ETH/USDT, etc.
• Use limit orders to build positions in batches to avoid market volatility.
• Set stop-loss and take-profit: it is recommended to set stop-loss below the purchase price by 3%.

Wealth Management Appreciation Plans:

• Flexible wealth management: annual yield of 4%-8%, available for withdrawal anytime.
• Fixed-term products: lock in USDT for higher returns (annual yield up to 15%).
• Participate in DeFi mining: earn additional income through decentralized finance protocols.

4. USDT Storage and Security Guide#

Hot Wallet Storage (Daily Use)#

• Built-in wallet in the exchange: convenient and quick, suitable for frequent trading.
• Mobile wallets: such as Trust Wallet, TokenPocket, etc.

Cold Wallet Storage (Long-Term Holding)#

• Hardware wallets: Ledger Nano X, Trezor, etc.
• Generate and sign transactions offline, completely eliminating the risk of online attacks.

Transfer Precautions#

• Confirm chain type: TRC-20 has low fees (about 0.5 USDT), while ERC-20 has higher security.
• Address verification: always check the first and last characters of the address before transferring.
• Small amount testing: conduct a small amount test before large transfers.

5. Risk Prevention and Compliance Tips#

Security Risk Control#

• Enable all security features (anti-phishing code, device management, etc.).
• Regularly change passwords and API keys.
• Avoid using public WiFi for trading operations.

Legal Compliance Awareness#

• Understand local legal and regulatory requirements.
• Keep complete transaction records for tax reporting.
• Avoid participating in money laundering and other illegal activities.

6. Frequently Asked Questions#

Q1: Will USDT de-peg?
A: Tether publishes monthly reserve reports, and historical volatility is below 0.3%. However, there may be temporary fluctuations in extreme market conditions, so it is advisable to stay informed.

Q2: Can USDT on different chains be interchanged?
A: No. ERC-20 and TRC-20 USDT are assets on different chains, and transfers must ensure that the recipient supports the same protocol.

Q3: How to exchange USDT for fiat currency?
A: Sell USDT in the fiat trading area of the trading platform to Alipay or bank cards, usually credited within 10 minutes. For large transactions, it is recommended to operate in batches.

Conclusion#

As the infrastructure of the cryptocurrency world, USDT provides investors with diversified options for risk hedging, cross-border payments, and asset appreciation. Through OKX Exchange, even complete beginners can quickly get started and safely begin their stablecoin investment journey.

Remember the three key principles:

1. Safety First: Enable all protective measures and regularly update passwords.
2. Continuous Learning: Stay updated on market dynamics and new technological developments.
3. Rational Investment: Do not invest more than you can afford to lose.

Start your USDT investment journey now! Click OKX Exchange to register immediately and receive beginner benefits.