The value of stablecoins is usually pegged to the US dollar 1:1, but it will fluctuate slightly due to factors such as market supply and demand, investor confidence and reserve assets. For example, USDT fell to $0.87 in 2018, and USDC fell to around $0.87 in 2023 due to the Silicon Valley banking crisis. The anchoring mechanism of stablecoins mainly includes: 1. fiat currency reserve type (such as USDT, USDC), which relies on the issuer's reserves; 2. cryptocurrency mortgage type (such as DAI), which maintains stability by over-collateralizing other cryptocurrencies; 3. Algorithmic stablecoins (such as UST), which relies on algorithms to adjust supply, but have higher risks. Common trading platforms recommendations include: 1. Binance, providing rich trading products and strong liquidity; 2. OKX,

USDT is not suitable as a traditional value-added asset investment, but can be used as an instrumental asset to participate in financial management. 1. The USDT price is anchored to the US dollar and does not have room for appreciation. It is mainly suitable for trading, payment and risk aversion; 2. Suitable for risk aversion investors, arbitrage traders and investors waiting for entry opportunities; 3. Stable returns can be obtained through DeFi pledge, CeFi currency deposit, liquidity provision, etc.; 4. Be wary of centralized risks, regulatory changes and counterfeit currency risks; 5. In summary, USDT is a good risk aversion and transitional asset. If you pursue stable returns, it should be combined with its use in financial management scenarios, rather than expecting its own appreciation.

USDC is safe. It is jointly issued by Circle and Coinbase. It is regulated by the US FinCEN. Its reserve assets are US dollar cash and US bonds. It is regularly audited independently, with high transparency. 1. USDC has strong compliance and is strictly regulated by the United States; 2. The reserve asset structure is clear, supported by cash and Treasury bonds; 3. The audit frequency is high and transparent; 4. It is widely accepted by institutions in many countries and is suitable for scenarios such as DeFi and compliant payments. In comparison, USDT is issued by Tether, with an offshore registration location, insufficient early disclosure, and reserves with low liquidity assets such as commercial paper. Although the circulation volume is large, the regulatory recognition is slightly low, and it is suitable for users who pay attention to liquidity. Both have their own advantages, and the choice should be determined based on the purpose and preferences of use.

The duration of the airdrop dividend is uncertain, but the LayerZero, StarkNet and ZK ecosystems still have long-term value. 1. LayerZero achieves cross-chain interoperability through lightweight protocols; 2. StarkNet provides efficient and low-cost Ethereum L2 expansion solutions based on ZK-STARKs technology; 3. ZK ecosystem (such as zkSync, Scroll, etc.) expands the application of zero-knowledge proof in scaling and privacy protection; 4. Participation methods include the use of bridging tools, interactive DApps, participating test networks, pledged assets, etc., aiming to experience the next generation of blockchain infrastructure in advance and strive for potential airdrop opportunities.

The altcoin transfer fee varies from chain to chain and is mainly determined by the basic network fee, transaction speed and Gas unit. 1. The Ethereum fee is high, with an average of US$2~20 per transaction, suitable for high-value transactions; 2. The Binance Smart Chain fee is low, about US$0.1~0.3, suitable for daily operations; 3. The Solana fee is extremely low, usually below US$0.0001, suitable for high-frequency transactions; 4. The Polygon fee is less than US$0.01, compatible with EVM; 5. TRON focuses on low-cost, and the handling fee is almost negligible. Users should reasonably choose the transfer method based on the characteristics of the chain, network congestion and gas fluctuations, and at the same time confirm that the token belongs to the same link as the receiver to avoid asset losses.

The ways to obtain USDT include: 1. Purchase through centralized exchanges such as Binance, OKX, etc., which is convenient to operate and supports multiple payment methods; 2. OTC modules are included in the platform for over-the-counter transactions, suitable for large-scale and privacy-conscious users; 3. Use stablecoin exchange platforms or wallets (such as TokenPocket) and decentralized exchanges (such as Uniswap) to achieve cross-chain or cross-currency exchanges; 4. Participate in exchange activities or task platforms to obtain airdrop rewards; 5. Obtain USDT incentives through mining, content creation, community interaction, etc.; 6. Collect USDT directly from other people's wallets, and pay attention to chain type matching to avoid asset loss.

To check the real-time price of altcoins, it is recommended to use the exchange market page, market aggregation website and professional market APP. Specific methods include: 1. View real-time prices and trends through mainstream exchanges (such as Binance, OKX, Huobi); 2. Use market aggregation websites (such as CoinMarketCap, CoinGecko) to obtain authoritative and comprehensive data; 3. Use professional APP for personalized monitoring and chart analysis. It is recommended to combine multi-platform data, use chart tools to analyze trends, set price reminders, and give priority to highly-known platforms to ensure accurate and timely data.

PYUSD is not suitable as a speculative asset, but is suitable for payment and funding stability. 1.PYUSD is issued by PayPal, anchored to the US dollar, and has no appreciation potential; 2. It is suitable for short-term value preservation and avoiding crypto market fluctuations; 3. Currently supports Coinbase, Kraken, Binance US, Huobi and PayPal wallet transactions; 4. Compliance and security should be given priority when choosing a platform.