Industry WIKI

On July 15, 2020, between 20:00 and 22:00 UTC, 130 high-profile Twitter accounts were compromised by outside parties to promote a bitcoin scam. Hackers used social engineering against Twitter employees to gain access to administrative tools, allowing them to post the tweets directly. The scam tweets asked individuals to send bitcoin currency to a specific cryptocurrency wallet, with the

An ATM card is a dedicated payment card issued by a financial institution (i.e. a bank) which enables a customer to access their financial accounts via its and others' automated teller machines (ATMs) and, in some countries, to make approved point of purchase retail transactions. Many ATM cards also doubled as cheque guarantee cards. ATM cards are not credit or debit cards, however most

BNB is the native asset used by the BNB Chain ecosystem. This article covers its positioning, mechanisms, verification guidelines, and common misconceptions.

In business, a boiler room is an outbound call center selling questionable investments by telephone. It usually refers to a room where salespeople work using unfair, dishonest sales tactics, sometimes selling penny stocks or private placements or committing outright stock fraud. A common boiler room tactic is the use of falsified and bolstered information in combination with verified com

Credit market imperfections (known academically as capital market imperfections) are limitations that reduce the range of financial contracts that can be signed or honored. There are three main theoretical drivers of imperfection: First, lenders do not have full information about the borrower, whether they have the capacity to pay back their debt and/or whether they are willing to pay (a

Cheque truncation (check truncation in American English, also cheque imaging) is a cheque clearance system which uses the digitization of a physical paper cheque into a substitute electronic form for transmission to the paying bank. The process of cheque clearance, involving data matching and verification, is undertaken using digital images instead of paper originals.

Conservative formula investing is an investment technique that uses the principles of low-volatility investing and is enhanced with momentum and net payout yield signals.

Contactless payment systems are credit cards and debit cards, key fobs, smart cards, or other devices, including smartphones and other mobile devices, that use radio-frequency identification (RFID) or near-field communication (NFC) for making secure payments. The embedded integrated circuit chip and antenna enable consumers to wave their card, fob, or handheld device over a reader at the

Crypto-to-crypto trading generally refers to the buying and selling between different crypto assets. This article introduces positioning, mechanisms, usage verification, and common misconceptions.

DAI is a US dollar-pegged stablecoin associated with the Maker system, later linked to the development of the Sky ecosystem. This article introduces its positioning, mechanism, usage verification, and common misconceptions.

Debanking (sometimes spelled de-banking, and also known within the banking industry as de-risking) is the closure of people's or organizations' bank accounts by banks that perceive the account holders to pose a financial, legal, regulatory, or reputational risk to the bank.

A digital card is either a physical item, such as a memory card on a camera, or, increasingly since 2017, the digital content hosted

Dynamic currency conversion (DCC) or cardholder preferred currency (CPC) is a process whereby the amount of a credit card transaction is converted at the point of sale, ATM or internet to the currency of the card's country of issue. DCC is generally provided by third party operators in association with the merchant, and not by a card issuer. Card issuers permit DCC operators to offer DCC

An e-commerce payment system (or an electronic payment system) facilitates the acceptance of electronic payment for offline transfer, also known as a subcomponent of electronic data interchange (EDI). E-commerce payment systems have become increasingly popular due to the widespread use of internet-based shopping and banking.

Ethereum is a public blockchain that runs smart contracts, and ETH (Ether) is its native asset. This article introduces its positioning, mechanisms, verification guidelines, and common misconceptions.

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

An exchange is the process of acquiring one asset using another. This article introduces definition, mechanics, usage verification, and common misconceptions.

A hardware security module (HSM) is a physical computing device that safeguards and manages secrets (most importantly digital keys), and performs encryption and decryption functions for digital signatures, strong authentication and other cryptographic functions. These modules traditionally come in the form of a plug-in card or an external device that attaches directly to a computer or ne

Hyperbridge is a cross-chain interoperability bridge that uses cryptographic protocols to facilitate the transfer of assets and data between different blockchains. Hyperbridge was launched on Polkadot mainnet in 2024 by Polytope Labs. The protocol is designed with a decentralised verification system which eliminates traditional reliance on blockchain validators, addressing the limitation

Jumio is an online mobile payment and identity verification company that offers card and ID scanning and validation products for mobile and web transactions. They sell these products under the brand name "Netverify Trusted Identity as a Service."

Microcredit is the extension of very small loans (microloans) to borrowers with limited access to traditional credit who typically do not have access to traditional banking services due to a lack of collateral, steady employment, and a verifiable credit history. The primary aim of microcredit is to support entrepreneurship, facilitate self-employment, and alleviate poverty, particularly

Money is any item or verifiable record that is generally accepted as payment for goods and services and repayment of debts, such as taxes, in a particular country or socio-economic context. The primary functions which distinguish money are: medium of exchange, a unit of account, a store of value and sometimes, a standard of deferred payment.

A personal identification number (PIN; sometimes redundantly a PIN code or PIN number) is a numeric (sometimes alpha-numeric) passcode used in the process of authenticating a user accessing a system.

Proof of personhood (PoP) is a means of resisting malicious attacks on peer-to-peer networks, particularly attacks that use multiple fake identities, otherwise known as a Sybil attack. Decentralized online platforms are particularly vulnerable to such attacks by their very nature, as notionally democratic and responsive to large voting blocks. In PoP, each unique human participant obtain

Proof of work (also written as proof-of-work, and abbreviated PoW) is a form of cryptographic proof in which one party (the prover) proves to others (the verifiers) that a certain amount of a specific computational effort has been expended. Verifiers can subsequently confirm this expenditure with minimal effort on their part. The concept was first proposed by Moni Naor and Cynthia Dwork

Social media mining is the process of obtaining data from user-generated content on social media in order to extract actionable patterns, form conclusions about users, and act upon the information. Mining supports targeting advertising to users or academic research. The term is an analogy to the process of mining for minerals. Mining companies sift through raw ore to find the valuable mi

A Talking ATM is a type of automated teller machine (ATM) that provides audible instructions so that persons who cannot read an ATM screen can independently use the machine. All audible information is delivered privately through a standard headphone jack on the face of the machine or a separately attached telephone handset. Information is delivered to the customer either through pre-reco

TRON is a blockchain network supporting accounts, transactions, and smart contracts. TRX is its native asset, and TRC20 is a common contract token standard. This article introduces its positioning, mechanisms, verification steps, and common misconceptions.

TRX is the native asset of the TRON network, also known as TRONIX. This article covers its positioning, mechanisms, verification checklist, and common misconceptions.

A turnstile (also called a gateline, baffle gate, automated gate, turn gate in some regions) is a form of gate which allows one person to pass at a time. A turnstile can be configured to enforce one-way human traffic. In addition, a turnstile can restrict passage only to people who insert a coin, ticket, transit pass, security credential, or other method of payment or verification. Mode

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

USD1 is a US dollar stablecoin associated with the World Liberty Financial brand. This article introduces its positioning, mechanism, verification checklist, and common misconceptions.

USDC is a US dollar-backed stablecoin issued by Circle. This article introduces its positioning, mechanism, usage checklist, and common misconceptions.

USDS is the stablecoin of the Sky protocol and is closely related to the evolution of DAI. This article covers its positioning, mechanism, usage checklist, and common misconceptions.

USDT is a US dollar-denominated stablecoin issued by Tether, designed to maintain a close value relationship with the US dollar. This article introduces its positioning, mechanism, verification checklist, and common misconceptions.

Verifi, Inc. is an American financial technology company that provides dispute management and chargeback prevention tools for card-not-present payments. Founded in 2005 and headquartered in Los Angeles, California, Verifi offers products including Order Insight, Rapid Dispute Resolution (RDR), and the Cardholder Dispute Resolution Network (CDRN) to help merchants, issuers, and acquirers

World, also known as World Network, is a humanity verification project and financial network. It was developed and launched as the cryptocurrency project Worldcoin. Among other organizations, contributors to the project include Tools for Humanity, a company founded in 2019 by Sam Altman, Max Novendstern, and Alex Blania. World's stated mission is to provide a reliable and anonymous way t