dollar
Let an agent handle dollars by country, ISO code, symbol and exchange rates, disambiguating which dollar is meant, with sourced data and no investment advice.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent handle dollars by country, ISO code, symbol and exchange rates, disambiguating which dollar is meant, with sourced data and no investment advice.
The name of many currencies, most prominently the United States dollar (USD), and also the Canadian, Australian, New Zealand, Hong Kong, Singapore and other dollars; historical examples include the Zimbabwean dollar.
What it is for: Pricing, payment and reserves in many economies.
It can be identify which dollar is meant; convert at sourced rates; use correct symbols and codes; understand historical dollars.
Distinguishing features
Name shared by many currencies
USD is the main reserve currency
Symbol $ is ambiguous
Some dollars have been redenominated or abandoned
What it looks like
Banknotes and coins of many designs; the $ sign.
How it is recognised
Symbol $ with prefixes such as US$, C$, A$
ISO codes such as USD, CAD, AUD
Historical dollars such as the Zimbabwean dollar
Related models
is a kind of - category
is issued by - issuer
is divided into - subunit
is related to - value
In practice
Families and kinds
United States dollar
Canadian dollar
Australian and New Zealand dollars
Asian dollars such as HKD and SGD
historical dollars
Identifiers
ISO 4217 USD 840, CAD 124, AUD 036 and others currency codes
Standards and regulation
ISO 4217
Central bank regulations
Failure modes and hazards
Ambiguous $ amounts
Outdated rates
Personal investment advice
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.dollar-communication
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Identity Which dollar.
Many dollars exist.
Currency
Country and code.
Currency
Which dollar.
- Which dollar is meant, by country and ISO code? definition
- Is the symbol ambiguous here? boundary
History
Redenominations.
History
History.
- Has this dollar been redenominated or replaced? provenance
- When? provenance
Value Rates.
Rates need sources.
Rate
Exchange rate.
Rate
Exchange rate.
- What is the rate, from which source and at what time? measurement
- Official or market? definition
Advice
No personal advice.
Advice
Advice limit.
- Is the user asking whether to buy or sell currency? boundary
- How should the agent respond? action
Writing Notation.
Notation avoids ambiguity.
Symbols
Prefixes.
Symbols
Notation.
- Should the amount use an ISO code or prefixed symbol? action
- Is the decimal separator clear? boundary
Rounding
Cents.
Rounding
Rounding.
- How many decimal places are used? definition
- Are cash roundings applied? definition
Money Notes and coins.
Physical money has rules.
Notes
Security features.
Notes
Banknotes.
- How can banknotes be checked for authenticity? provenance
- Which series are current? provenance
Reserve role
Global use.
Reserve
Reserve currency.
- What role does the US dollar play in reserves and trade, according to official data? provenance
- How is that measured? definition
What the second pass must settle
- Should each dollar be a separate entry?
- How should rates be sourced and timestamped?
- How should historical dollars be linked?