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Fiat Currency

Currency issued within a monetary system; account, payment and settlement currencies can differ.

Concept and usage

Currency issued within a monetary system; account, payment and settlement currencies can differ.[1][2]

In context

Fiat currency is money issued within a monetary system and used as a legal unit of payment, such as TWD, CNY or USD. A transaction can involve separate account, payment, conversion and settlement currencies.[1][2]

Common confusion

A currency symbol on a service does not necessarily show what a card is charged or what a bank ultimately receives. Conversion, issuer and service charges may be separate, so amounts at different stages should not be compared without their currency context.[1][2]

Example

When a service quotes USD but a card is charged in TWD, the billing rate and extra charges affect the result. Record the authorization currency, statement currency and credited amount to describe the full cost.[1][2]

Keep exploring

FoundationPayments: deposit and withdrawal are separate capabilitiesA service can accept one funding method and use another payout route. Payment instrument support, currency, identity checks and recipient conditions should be confirmed independently. A logo cannot describe the entire movement of funds.Related contextPayment ecosystems: familiar logos, different pathsCards, e-wallets and bank payments operate through different infrastructure. A single menu can hide several service relationships. A useful taxonomy explains the path rather than merely listing brands.Deeper analysisPayment context: charges have several layersCharges can arise from a platform, instrument, bank or network. One free layer does not make the full transaction costless. Currency conversion and the credited amount are part of the picture.

Glossary

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Sources and scope

  1. Getting Started with VisaNet Connect — Acceptance APIsVisa DeveloperChecked:

    Describes authorization, capture, clearing and settlement in a specific VisaNet Connect API flow; access and availability have additional conditions.

  2. Bitcoin: A Peer-to-Peer Electronic Cash SystemBitcoin.orgChecked:

    The original Bitcoin paper, used for its design of transaction history and proof of work.