Ledger & Account
Append-only accounts of quantity movements
Bundle → Layer → Finding → Questions Incomplete
4 bundles · 8 layers · 0 findings · 0 questions
chart What accounts exist and whose they are
accountDefinition
account kinds, units of quantity, opening and closing rules
partyLinkage
how accounts bind to identified holders and operators
movement How quantity moves between accounts
postingRules
balance discipline, authorization, value dating
postingLifecycle
pending, appended, reversed states and contra-entries
balance Positions derived from movements
balanceDerivation
how balances are struck from the posting stream
statement
periodic account statements for holders
reconciliation Agreement between records
matching
pairing postings against external records or counter-ledgers
discrepancy
raising, investigating and closing mismatches
Note: Legacy card: layers named, findings and questions never written.
Classifiers Filled
- Family
- World Models
- Category
- Society, people and institutions
- Entry kind
- standalone-mm
- Navigation path
- NAV.SOC.ECO.STL
- Domain
- SOC.ECO.STL
- Industry
- Cross-industry
- Tags
- clearingsettlementsoc.eco.stl
- Also called
- R2
- Also registered as
- vr.wm-xct-014
What it is Derived, awaiting review
Append-only accounts of quantity movements: any countable thing (money, goods, credits, allowances) held in accounts whose state changes only by balanced postings that are never deleted, only reversed by contra-entries.
Note: First sentence of the legacy card introduction.
Why it exists Filled
Append-only accounts of quantity movements
Distinguishing features Missing, in the backlog
Not described yet. This gap is in the card backlog.
What robots and AI may and may not do Derived, awaiting review
Must not
- Append-only accounts of quantity movements: any countable thing (money, goods, credits, allowances) held in accounts whose state changes only by balanced postings that are never deleted, only reversed by contra-entries.
Moral aspects Derived, awaiting review
- Access beyond the holder's own record is granted by the operator via the S1/S2 access and consent models and audited via S4.
Owners Filled
Steward
The ledger operator owns the book: it guarantees append-only discipline, balance correctness and statement truthfulness, while each holder owns the view of their own accounts.
Links to other meta-models Filled
extends
- world.registry - the book of accounts is a register whose entries are accounts with legal effect on ownership of the quantity
references
- world.identityRegister - account holders and operators resolve to anchored identities
- world.socialProvisionAndBenefit - monetary benefit deliveries execute as postings on accounts of this model
- world.personalPropertyAndAssets - a person's financial holdings resolve to accounts kept here
composes
- world.eventRegister - the posting stream is published as a sequenced, integrity-proofed event log
- world.audit - posting authorization and access carry the audit facet
imports
- iso-20022 - ALIGN: account, posting and statement semantics align with the financial message model
- iso-4217 - REFERENCE: currency codes as an externally governed unit scheme for monetary ledgers
What else AI and robots need to interact with it Incomplete
Identity and identifiers required Missing, in the backlog
Not described yet. This gap is in the card backlog.
Direct properties not applicable Not applicable
Not applicable
Institutional or informational subject: no invented physical properties.
Recognition optional Missing, in the backlog
Not described yet. This gap is in the card backlog.
Capabilities and actions required Derived, awaiting review
- accountOpened: a new account was created for a holder in a ledger
- postingAppended: a balanced movement was irrevocably added to the book
- postingReversed: a contra-entry cancelled the effect of an earlier posting
- balanceStruck: a balance was derived and fixed for an account at a cut-off
- statementIssued: a periodic statement was produced and delivered to the holder
- discrepancyDetected: matching found records in disagreement and opened a case
- accountClosed: an account was closed after settling to zero
Legacy events listed as state transitions.
Hazards and failure modes optional Missing, in the backlog
Not described yet. This gap is in the card backlog.
Standards and interfaces required Derived, awaiting review
- holderAccessContract: the account holder's standing right to view postings, balances and statements of their own accounts
- auditorReadContract: scoped read access for an examiner over a defined period and account set
- interLedgerSettlementContract: terms under which two ledger operators exchange and settle mirrored postings
- statementDeliveryContract: how and where statements are delivered to holders
- accountStatementView: the holder's periodic view of one account; omits operator-internal codes and counterparty account detail
- trialBalanceView: the operator's cross-account consistency check; omits holder personal attributes
- aggregateReportingView: totals and flows at portfolio grain for oversight; omits person-level accounts and postings
Context of use required Filled
- Access beyond the holder's own record is granted by the operator via the S1/S2 access and consent models and audited via S4.
Sources Missing, in the backlog
Not described yet. This gap is in the card backlog.
Open questions
- Superseded by a researched world model? Map this legacy card to its successor or retire it.
Machine files
Provenance
legacy MMAS card (world-models v0.2) · legacy
Built from: models/world-r2-ledger-and-account/spec.yaml, models/docs/registries-ledgers/R2-ledger-and-account.md