Industry WIKI

Bitcoin (abbreviation: BTC; sign: ₿) is the first decentralized cryptocurrency. Based on a free-market ideology, bitcoin was invented in 2008 when an unknown person published a white paper under the pseudonym of Satoshi Nakamoto. Use of bitcoin as a currency began in 2009, with the release of its open-source implementation. From 2021 to 2025, El Salvador adopted it as legal tender curren

Cryptoeconomics is an evolving economic paradigm for a cross-disciplinary approach to the study of digital economies and decentralized finance (DeFi) applications. Cryptoeconomics integrates concepts and principles from traditional economics, cryptography, computer science, and game theory disciplines. Just as traditional economics provides a theoretical foundation for traditional finan

The international currency code for the Euro is EUR, with the symbol €. This article introduces its positioning, mechanism, usage verification, and common misconceptions.

Metallism is the economic principle that the value of money derives from the purchasing power of the commodity upon which it is based. The currency in a metallist monetary system may be made from the commodity itself (commodity money) or it may use tokens (such as national banknotes) redeemable in that commodity. Georg Friedrich Knapp (1842–1926) coined the term "metallism" to describe

A payment is the tender of something of value, such as money or its equivalent, by one party (such as a person or company) to another in exchange for goods or services provided by them, or to fulfill a legal obligation or philanthropy desire. The party making the payment is commonly called the payer, while the payee is the party receiving the payment. Whilst payments are often made volun

A postal order or postal note is a type of money order usually intended for sending money through the mail. It is purchased at a post office and is payable to the named recipient at another post office. A fee for the service, known as poundage, is paid by the purchaser. In the United States, this is known as a postal money order. Postal orders are not legal tender, but a type of promiss

A scrip is any substitute for legal tender.

The international currency code for the US dollar is USD. This article covers its definition, mechanisms, verification methods, and common misconceptions.