Stablecoin, USDT, and transactions are important terms that play a key role in modern digital finance and blockchain technology. Stable Coin is a cryptocurrency aimed at price stability, and USDT is a representative stable coin that works with the US dollar and serves as a key currency in global cryptocurrency transactions. Transactions are the minimum unit of work processing that can no longer be split in databases and blockchains, and it is a key mechanism that ensures safe movement and data integrity of digital assets. These concepts have become an essential knowledge for understanding the digital economy as well as cryptocurrency investors.
Stable coin
Stablecoin is a digital asset that maintains ‘stable’ value, and is a cryptocurrency developed to solve the extreme price volatility of existing cryptocurrencies. Most stable coins are designed to prevent prices from changing rapidly by linking value at a 1: 1 ratio in legal currencies such as the US dollar, euro, and yen. As of May 2025, Stable Coin’s market cap is $ 242.9 billion (about 332 trillion won), which is a 51% increase in a year. Representative stable coins such as tethers and circles (USDC) are distributed like a currency at the ratio of ‘$ 1 = 1 coin’ and plays a base call in the cryptocurrency market.
Legal Mortgage Stable Coin
– US dollar interlocking type: The most common form is a stable coin issued with US dollars collateral. It is operated by guaranteeing value by keeping dollars as much as a bank account or US Treasury bonds. Tethers (USDT), Circle (USDC), True USD (TUSD), and Geminai Dollar (GUSD) are typical examples.
– Other legal money interlocking type: There are also stable coins that are linked to other legal currencies such as euro, yen, and won. The value is determined according to the monetary policy and economic situation of each country, and the utilization is high in the area. Recently, RLUSD of Ripple has been approved as a legal money mortgage that is linked to the US dollar.
Cryptocurrency collateral stable coin
– Ethereum -based collateral type: It is a method of stabilizing value by using other cryptocurrencies such as Ethereum as collateral. Distributed operation by using the cryptocurrency itself as a collateral instead of existing legal money or real assets. DAI is the most representative example, which is published through smart contracts based on Ethereum.
– Overwriting system: In consideration of the volatility of cryptocurrency, we use the overture method of issuing a small amount of stable coin than the mortgage value. When the cryptocurrency price used as collateral falls, it maintains stability through a system that automatically liquidates. This enables transparent and verified mortgage management without a centralized organ.
Algorithm -based stable coin
– Unsecured algorithm method: It is an innovative way of stabilizing the value of coins through mathematical algorithms and smart contracts. It is operated purely with only code and mathematical mechanisms without external assets or collateral to implement complete decentralization. Similar to the Central Bank’s currency issuance approach, we use an algorithm that manages the total amount of stable coin.
– High risk and instability: Terra/Luna, as you can see, algorithm -based stable coins still have high risks and instability. When the market situation changes rapidly, there is a risk of breaking because the algorithm does not work properly. UST, USDN, FEI, etc. use this method, but special attention is required when investing.
Real Asset Mortgage Stable Coin
– Integration of precious metals and raw materials: Stable coin is operated directly linked to the value of real assets such as gold, silver and oil. It is attracting attention as an innovative financial product that combines traditional asset investment and blockchain technology. DGX, PAXG, XAUT, etc. are typical, and the value of real assets is represented by digital tokens.
– Real estate and other assets: Stable coins are also being developed with real estate or other real assets. This serves as a bridge connecting the existing investment market and the cryptocurrency market and provides new investment opportunities. Tokenization of real assets to make it easier and faster.
Stable Coin has a $ 27 trillion in trading in 2024, exceeding the total amount of credit card transactions, making it a new paradigm in the financial market. Due to the strength of being able to move quickly and easily at home and abroad at any time at any time, it has been making great changes in traditional financial systems. Domestic banks are also actively studying related technologies and systems to cope with the rapid growth of stable coins, which is expected to be an important change in the financial ecosystem.
USDT
USDT is an abbreviation for ‘USD Tether’, which is a cryptocurrency term that means stablecoin, which is linked to a 1: 1 ratio with the US dollar (USD). This digital asset, published in 2014 by Tether Limited, was developed to solve the extreme price volatility of cryptocurrency. As of May 2025, the market cap surpassed the market cap of $ 150 billion, making it the largest stable coin, accounting for 61%of the global stablecoin market. 1 USDT = 1 USD is called digital dollar and is a key currency on cryptocurrency exchanges.
Basic concept and operation principle
– Characteristics of Stable CoinUSDT is a cryptocurrency designed to maintain the same value as the US dollar for price stability. Tethers claims to have a dollar reserve as much as the USDT issued, which guarantees a 1: 1 exchange rate. Unlike other cryptocurrencies, there is no extreme price change, which is used as a stable value storage.
– Blockchain -based operationThe USDT is issued and traded on various blockchain networks such as Ethereum, Tron and Bitcoin. In particular, the USDT value distributed in the Tron Network exceeds $ 75 billion and deals more than 60% of the total trading volume. Transparent and verifiable transactions are made through blockchain technology, and automated issuance and incineration processes using smart contracts are carried out.
Main use and use
– Cryptocurrency exchange: USDT is a key currency at most global cryptocurrency exchanges. It operates a USDT market on major exchanges such as Binance, OKX, and Kucoin, and provides pairs of transactions with other cryptocurrencies such as Bitcoin and Ethereum. Investors use a digital cacheting strategy that prevents losses by converting assets to USDT when the market falls.
– International remittance and payment methods: International remittances are possible with faster and cheaper fees than traditional bank remittances. In particular, in developing countries, there are increasing cases of using USDT instead of unstable legal money. It is also used as a direct payment method in the NFT market or web 3 game, and can be used in real time at any time on the blockchain.
B2B transaction and commercial use
– Trading transactions between companies: As of 2025, the B2B stablecoin payment amounted to $ 36 billion annually, growing to a level that goes beyond individual transactions. Monthly transactions surged from less than $ 100 million in early 2023 to more than $ 3 billion in early 2025. Companies are using USDT to pay low cost and real -time payment, financial operations, and suppliers.
– Trade transaction innovation: In international trade, it is attracting attention as an innovative payment method that can greatly reduce the exchange fee and time between various currencies. When importing goods in Europe and exporting to Korea, you can skip the complex currency exchange process that turns from the euro to the dollar and won. It is becoming more and more important in global trade and has changed its traditional financial system.
Use of Defi and financial services
– Designation Financial EcosystemThe USDT is one of the most adopted stable coins in the Defi space and is used in various protocols. Users can use various financial services such as liquidity, loans, and transactions through USDT. Instead of other cryptocurrencies, more and more users who prefer stable USDTs have become a key asset of the Defi ecosystem.
– Asset storage and investment toolsCryptocurrency investors use USDT as a means to keep the portfolio safely during the sale. Since it is issued on the blockchain, it can quickly develop investment and store value in digital form without worrying about dramatic price changes. The number of stable nose wallets has increased by 50% from 19.6 million to 30 million in the past year, and the user base has been greatly expanded.
The USDT has become an indispensable core infrastructure in the cryptocurrency market as of 2025, and it is an important bridge that connects traditional finance and digital assets. Along with the plan for re -entering the US market, it is expected to be more enlarged in the future, and it is expected to solidify its position as the foundation of the global digital economy. However, the challenges such as reserve transparency and regulatory uncertainty remain an important issue to solve.
transaction
Transaction is an English word that means ‘transaction, processing, and performance’, which means ‘the minimum unit of work processing that can no longer be split’. This term is used as a key concept in various fields such as database management, cryptocurrency, and financial services. In the computer science field, it refers to a unit of tasks performed to change the status of the database, and in the blockchain, it refers to a transaction record that represents the movement of digital assets. If A sends 1,000 won to B, it indicates a single work that cannot be separated as if a complete transaction is established only if both withdrawal and deposit are successful.
Concept of database transaction
– Definition of work unitIn the database, the transaction is a set of tasks that change the database state through SQL commands such as SELECT, Insert, Update, and Delete. One transaction can be composed of several SQL statements, but logically treated in one task unit. When writing on the bulletin board, enter the data with the insert statement and search the latest information with a select statement.
– acid characteristics: Database transactions have four key characteristics: atomicity, consistency, isolation, and durability. Atomicity means that the transaction must be successful or fail, and consistency means that the database must be consistent before and after the transaction. Independence means that simultaneous transactions should not interfere with each other, and persistence must be permanently stored.
Transaction in cryptocurrency and blockchain
– Moving digital assets: Transaction in cryptocurrency means transactions that move digital assets from one wallet to another wallet. All records that occur when transmitting cryptocurrencies such as Bitcoin or Ethereum are permanently stored in the blockchain as transaction. Each transaction has a unique hash value and is included in the block and connected to the chain through the verification of network participants.
– Blockchain network processingCryptocurrency transactions go through the process of establishing a transaction by processing data from a block on the network. When transactions occur, network nodes verify it, and miners include them in the block and add them to the chain. In this process, a transaction fee is incurred, and the processing time and fees vary depending on the network congestion.
Transaction management in financial services
– Bank business processing: In financial institutions, transactions are a concept that encompasses all financial transactions such as account transfer, deposit and withdrawal and loan approval. Cash withdrawal through ATMs and remittances through online banking are all treated as transactions, and each must be guaranteed perfection and accuracy. In the bank system, millions of transactions are handled per day, and advanced transaction management systems are operated.
– E -commerce payment: The payment process that occurs when purchasing a product at an online shopping mall is also a representative example of transactions. Several stages such as ordering, payment approval, inventory deduction, and delivery information registration are processed in one transaction. When an error occurs during the payment process, all steps will be rolled back to return to the original state, which ensures data integrity.
Transaction control command and isolation level
– Commit and rollback: Commit in transaction processing is a command that determines that all tasks have been successfully completed. When the commit is executed, all changes in the transaction are permanently reflected in the database, and then the rollback becomes impossible. Rollback, on the other hand, is a command that canceled all changes when an error occurred during the transaction performance and returned to the beginning of the transaction.
– Isolation level managementThe database sets the isolation level to control interference between multiple transactions that run simultaneously. There are four isolation levels: Read-UNCOMMITTED, READ-COMMITTED, Repeatable-Read, and Serializable. Depending on the requirements of each system, select the appropriate isolation level to balance the simultaneousity and consistency.
Transactions have become a core mechanism that guarantees data integrity and system stability in modern digital society. The concept of transactions in various fields, from databases to blockchain and financial services, enables safe and reliable system operation. In the future, the transaction processing method is expected to develop more sophisticated and efficiently.
FAQ
Q: What is a stable coin?
A: Stable Coin is a cryptocurrency linked to legal currency or real assets to maintain price stability. It was developed to solve the extreme price volatility of existing cryptocurrencies, mainly in the US dollar and a 1: 1 ratio. Tethers (USDT) and Circle (USDC) are representative examples, and they are in charge of a key currency on the cryptocurrency exchange.
Q: What does USDT mean?
A: USDT is short for USD tether, which is a stable coin that works with a 1: 1 ratio with the US dollar. The digital asset, published in 2014 by Tether Limited, exceeds $ 150 billion in market cap, accounting for 61%of the global stablecoin market. It is used as a key currency on the cryptocurrency exchange and is widely used in international remittances and B2B transactions.
Q: What is a transaction?
A: Transaction is a term that means the minimum unit of work processing that can no longer be split. In the database, it refers to a set of tasks that change the data status, and in the blockchain, the transaction record shows the movement of digital assets. It has the ACID characteristics of atomic, consistency, independence, and sustainability, and it has the characteristics of success or failure.
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