DateLiteral

A calendar date in canonical `YYYY-MM-DD` form.

Definition

A calendar date in canonical YYYY-MM-DD form.

Boundaries: Not a datetime or time.
Hex Code: b1
Standard Alignment: rdf:Literal (Broad) + xsd:date (Exact)

Fide ID Rules

These entity-specific constraints apply when DateLiteral is used in Fide ID.

As Entity Type

MUST use Reference Type DateLiteral or NetworkResource.

As Reference Type

Reference MUST use canonical YYYY-MM-DD format without timezone (XML Schema 1.1 Part 2: Datatypes).

Date references MUST use a four-digit year and zero-padded month and day values.

Valid Reference: 2026-03-05
Invalid Reference: 2026-3-5
Invalid Reference: 2026-03-05Z
Invalid Reference: 03/05/2026

Examples

Status	Entity Type	Reference Type	Fide ID Prefix
Valid	`DateLiteral`	`DateLiteral`	`did:fide:0xb1b1`
Invalid	`DateLiteral`	`TextLiteral`	`did:fide:0xb1a0`

DateTimeLiteral

A specific point in time in canonical UTC `YYYY-MM-DDTHH:MM:SSZ` form.

YearMonthLiteral

A calendar year and month in canonical `YYYY-MM` form.