The role of Ethereum smart contract is to realize decentralized, automated and transparent protocol execution. Its core functions include: 1. As the core logic layer of DApp, it supports token issuance, DeFi, NFT and other functions; 2. Automatically execute contracts through code to reduce the risks of human intervention and fraud; 3. Build a DeFi ecosystem so that users can directly conduct financial operations such as lending and transactions; 4. Create and manage digital assets to ensure uniqueness and verifiability; 5. Improve the transparency and security of supply chain and identity verification; 6. Support DAO governance and realize decentralized decision-making.

USDT is not a scam, but there are risks. 1. Tether provides liquidity in the crypto market by issuing USDT, a stablecoin anchored by the US dollar; 2. The company's background is related to Bitfinex, and has been fined for audit issues but has increased transparency; 3. The reserve assets are mainly US Treasury bonds rather than pure cash, and there are certain financial risks; 4. Face risks such as insufficient audit frequency, centralized control and compliance restrictions; 5. The USDT market is highly accepted, but trust needs to be based on continuous disclosure and compliance operations. Overall, USDT is trustworthy but does not equal zero risk, and users should be cautious.

DAO is a decentralized autonomous organization owned and managed by community members and automatically enforces rules through smart contracts. 1. It does not have traditional management, and decisions are decided by collective voting; 2. Governance tokens give members the voting rights, the more tokens, the greater the weight; 3. Proposals are initiated and voted by the community, and will be automatically executed by the smart contract after receiving the majority support. Its core features include decentralization, autonomy and transparency, and all rules and capital flows are open and auditable. The importance of DAO is to create a more fair, efficient and cohesive collaboration model, breaking regional and identity restrictions, and improving trust and operational efficiency.

To transfer USDT to the exchange for transactions, you must first confirm that the chain type matches, the address is correct, and complete real-name authentication. 1. Register and authenticate the mainstream exchange account with real name; 2. Confirm that the wallet is consistent with the USDT chain type of the exchange (such as TRC20); 3. Obtain the recharge address of the corresponding chain on the exchange and copy it accurately; 4. Initiate transfers from the wallet and pay the corresponding handling fee; 5. After arrival, you can trade in the spot or contract market; 6. Pay attention to checking the address, avoid transferring to the contract address, and give priority to low-processing networks. The entire process is usually completed in minutes, ensuring operational safety is key.

The top ten popular digital currency trading platforms in the world include Binance, Ouyi OKX, gate.io, Huobi, KuCoin, Kraken, Bitfinex and Bitstamp. 1. Binance is known for its large trading volume, rich trading pairs, multi-trading mode, high security and user-friendly; 2. Ouyi OKX provides diversified derivatives, localized services, stable technology and Web3 layout; 3. gate.io has the advantages of strict project screening, many trading products, strong compliance, diverse financial products and simple interface; 4. Huobi has mainstream trading products, complete security guarantees, rich activities and localized operations; 5. KuCoin focuses on potential currencies, diversified trading tools, platform currency benefits and multi-language support; 6

Whether an Ethereum perpetual contract is easy to do depends on multiple factors. 1. Its characteristics include no maturity date, capital fee mechanism and high leverage; 2. The advantages are high liquidity, moderate volatility, and support for a variety of strategies; 3. Challenges include high leverage and easy liquidation, capital fee rates affect returns, exchange risks and market manipulation risks; 4. Suitable for short-term traders, arbitragers and hedgeers, not suitable for inexperienced novices or people who cannot withstand high volatility; 5. To improve the success rate, you need to control leverage, set stop loss, pay attention to market sentiment and choose a reliable exchange. Overall, Ethereum perpetual contracts are suitable for experienced traders, but they need to be operated with caution.

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.