Yes, you can get USDT for free in the following 5 ways: 1. Participate in airdrop tasks on mainstream exchanges, such as registering and giving away, completing novice tasks, and inviting friends to get rewards; 2. Join the blockchain project community and obtain airdrops through Web3 social platform or Twitter/Discord interaction; 3. Participate in the "test network" activity, register the test chain address and simulate the use of DApp to get incentives; 4. Complete tasks on the cryptocurrency navigation platform to receive novice gift packages, participate in sign-in, lottery and other activities; 5. Interact with the content creation and community, and publish original content to obtain USDT rewards from the project party. At the same time, you need to pay attention to security risks, do not fill in private keys, do not believe in scams, and choose mainstream platforms to participate.

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.

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

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 cash exchange needs to be operated through a trading platform that supports fiat currency withdrawal. 1. Prepare a trading platform account that supports fiat currency withdrawal (such as Binance, Ouyi, Huobi, etc.); 2. Complete KYC real-name authentication; 3. Bind bank cards or Alipay and other payment methods; 4. Log in to the account and ensure that USDT is in the fund account or spot account; 5. Enter the OTC or fiat currency area and choose to sell USDT; 6. Set the sales amount and match the buyer; 7. After confirming the other party’s payment, click “Confirm Coin Delivery” to complete the transaction. Withdrawal methods include OTC fiat currency transactions, bank card withdrawals and third-party payments, among which OTC is more efficient. Notes include making sure to verify that the money is received before releasing, avoiding frequent large withdrawals, and contacting customer service in time when encountering abnormalities. The key to the entire process is to choose

Security and personal needs should be given priority when choosing a Bitcoin trading platform. 1. Binance is a world-leading platform, providing rich trading pairs and low fees; 2. OKX has strong technical strength and supports multiple trading modes; 3. Gate.io currency selection is numerous and the community is active; 4. Huobi interface is simple and easy to use; 5. KuCoin focuses on user experience; 6. Kraken is highly compliant; 7. BITFINEX is suitable for professional traders; 8. Bitstamp is simple to operate. Each platform has its own advantages, and users need to choose according to their own situation.

The Restaking project is becoming a new hot spot in the Ethereum ecosystem. This article lists the top ten projects that are worth paying attention to and their core indicators. 1. EigenLayer: core protocol, supports AVS expansion, attracting more than US$10 billion in pledged assets; 2. Ethos: modular security market, supports multiple link entry; 3. Karak: user experience is preferred, providing one-click pledge process; 4. Symbiotic: open security protocol, compatible with multiple pledged assets; 5. Bunker Finance: applied in the DeFi risk control field; 6. ZeroLayer: focusing on infrastructure verification; 7. Lava Protocol: focusing on RPC

The Huobi Exchange App can be downloaded and installed through the official link. The specific steps are: 1. Click the official website download button; 2. The system automatically recognizes the device and starts downloading; 3. Open the installation package to complete the installation; 4. Register or log in to the account; 5. Use the trading function after completing the identity verification. When using it, you need to pay attention to enabling security verification, regularly updating the version, keeping account information well, and using multiple verification during large-scale transactions. If you encounter any problems, you can check the network connection, confirm that the account password is correct, or contact customer service for help.