rfc9553v3.txt   rfc9553.txt 
skipping to change at line 1082 skipping to change at line 1082
} }
Figure 13: Example for the relatedTo Property Figure 13: Example for the relatedTo Property
2.1.9. uid 2.1.9. uid
uid: String (mandatory). An identifier that associates the object as uid: String (mandatory). An identifier that associates the object as
the same across different systems, address books, and views. The the same across different systems, address books, and views. The
value SHOULD be a URN [RFC8141], but for compatibility with value SHOULD be a URN [RFC8141], but for compatibility with
[RFC6350], it MAY also be a URI [RFC3986] or free-text value. The [RFC6350], it MAY also be a URI [RFC3986] or free-text value. The
value of the URN SHOULD be in the "uuid" namespace [RFC4122]. value of the URN SHOULD be in the "uuid" namespace [RFC9562].
[RFC9562] describes multiple versions of Universally Unique
As of this writing, a revision [UUID] of the Universally Unique IDentifiers (UUIDs); UUID version 4 is RECOMMENDED.
Identifier (UUID) Standards Track document [RFC4122] is in
progress and will likely introduce new UUID versions and best
practices to generate global unique identifiers. Implementors
SHOULD follow any recommendations described there. Until then,
implementations SHOULD generate identifiers using the random or
pseudorandom UUID version described in Section 4.4 of [RFC4122].
"uid": "urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6" "uid": "urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6"
Figure 14: Example for the uid Property Figure 14: Example for the uid Property
2.1.10. updated 2.1.10. updated
updated: UTCDateTime (optional). The date and time when the data in updated: UTCDateTime (optional). The date and time when the data in
the Card was last modified. the Card was last modified.
skipping to change at line 3887 skipping to change at line 3881
<https://www.rfc-editor.org/info/rfc2119>. <https://www.rfc-editor.org/info/rfc2119>.
[RFC2426] Dawson, F. and T. Howes, "vCard MIME Directory Profile", [RFC2426] Dawson, F. and T. Howes, "vCard MIME Directory Profile",
RFC 2426, DOI 10.17487/RFC2426, September 1998, RFC 2426, DOI 10.17487/RFC2426, September 1998,
<https://www.rfc-editor.org/info/rfc2426>. <https://www.rfc-editor.org/info/rfc2426>.
[RFC3339] Klyne, G. and C. Newman, "Date and Time on the Internet: [RFC3339] Klyne, G. and C. Newman, "Date and Time on the Internet:
Timestamps", RFC 3339, DOI 10.17487/RFC3339, July 2002, Timestamps", RFC 3339, DOI 10.17487/RFC3339, July 2002,
<https://www.rfc-editor.org/info/rfc3339>. <https://www.rfc-editor.org/info/rfc3339>.
[RFC4122] Leach, P., Mealling, M., and R. Salz, "A Universally
Unique IDentifier (UUID) URN Namespace", RFC 4122,
DOI 10.17487/RFC4122, July 2005,
<https://www.rfc-editor.org/info/rfc4122>.
[RFC4648] Josefsson, S., "The Base16, Base32, and Base64 Data [RFC4648] Josefsson, S., "The Base16, Base32, and Base64 Data
Encodings", RFC 4648, DOI 10.17487/RFC4648, October 2006, Encodings", RFC 4648, DOI 10.17487/RFC4648, October 2006,
<https://www.rfc-editor.org/info/rfc4648>. <https://www.rfc-editor.org/info/rfc4648>.
[RFC5234] Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax [RFC5234] Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax
Specifications: ABNF", STD 68, RFC 5234, Specifications: ABNF", STD 68, RFC 5234,
DOI 10.17487/RFC5234, January 2008, DOI 10.17487/RFC5234, January 2008,
<https://www.rfc-editor.org/info/rfc5234>. <https://www.rfc-editor.org/info/rfc5234>.
[RFC5322] Resnick, P., Ed., "Internet Message Format", RFC 5322, [RFC5322] Resnick, P., Ed., "Internet Message Format", RFC 5322,
skipping to change at line 4019 skipping to change at line 4008
<https://www.rfc-editor.org/info/rfc8605>. <https://www.rfc-editor.org/info/rfc8605>.
[RFC9554] Stepanek, R. and M. Loffredo, "vCard Format Extension for [RFC9554] Stepanek, R. and M. Loffredo, "vCard Format Extension for
JSContact", RFC 9554, DOI 10.17487/RFC9554, March 2024, JSContact", RFC 9554, DOI 10.17487/RFC9554, March 2024,
<https://www.rfc-editor.org/info/rfc9554>. <https://www.rfc-editor.org/info/rfc9554>.
[RFC9555] Stepanek, R. and M. Loffredo, "vCard Format Extension for [RFC9555] Stepanek, R. and M. Loffredo, "vCard Format Extension for
JSContact", RFC 9555, DOI 10.17487/RFC9555, March 2024, JSContact", RFC 9555, DOI 10.17487/RFC9555, March 2024,
<https://www.rfc-editor.org/info/rfc9555>. <https://www.rfc-editor.org/info/rfc9555>.
[RFC9562] Davis, K., Peabody, B., and P. Leach, "Universally Unique
IDentifiers (UUIDs)", RFC 9562, DOI 10.17487/RFC9562,
April 2024, <https://www.rfc-editor.org/info/rfc9562>.
[UBiDi] The Unicode Consortium, "Unicode Standard Annex #9: [UBiDi] The Unicode Consortium, "Unicode Standard Annex #9:
Unicode Bidirectional Algorithm", Revision 48, Unicode Bidirectional Algorithm", Revision 48,
Unicode 15.1.0, August 2023, Unicode 15.1.0, August 2023,
<https://www.unicode.org/reports/tr9/>. <https://www.unicode.org/reports/tr9/>.
[UUID] Davis, K. R., Peabody, B. G., and P. Leach, "Universally
Unique IDentifiers (UUID)", Work in Progress, Internet-
Draft, draft-ietf-uuidrev-rfc4122bis-14, 6 November 2023,
<https://datatracker.ietf.org/doc/html/draft-ietf-uuidrev-
rfc4122bis-14>.
[WHATWG-URL] [WHATWG-URL]
WHATWG, "URL Living Standard", January 2024, WHATWG, "URL Living Standard", January 2024,
<https://url.spec.whatwg.org>. <https://url.spec.whatwg.org>.
Authors' Addresses Authors' Addresses
Robert Stepanek Robert Stepanek
Fastmail Fastmail
PO Box 234 PO Box 234
Collins St. West Collins St. West
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