[media-types] Re: [IANA #1421575] application/vp+sd-jw t registration request

As previously mentioned on this mailing list[1] as well as in response
to the June 24th message[2], the "application/vp+sd-jwt" media
type is a net harm to the internet and should not be endorsed, or given the
impression of endorsement, by the IETF or IANA through registration.

[1]
https://mailarchive.ietf.org/arch/msg/media-types/VnhrnlQmh8rtlo6iU8gS1QYYK_I/
https://mailarchive.ietf.org/arch/msg/media-types/AL6QDGXYl-zsfkN4x_S9Jq_RX9I/
https://mailarchive.ietf.org/arch/msg/media-types/G9Lku0QcRYjjG09QXUYurqfOtQA/

[2]
https://mailarchive.ietf.org/arch/msg/media-types/QgmYXmEHGZr6FeeUzsLt7E4Wd3E/



On Wed, Jul 2, 2025 at 7:17 PM Amanda Baber via RT <
[email protected]> wrote:

> Hi Murray,
>
> #2 of 2 from June 24th.
>
> thanks,
> Amanda
>
> On Tue Jun 24 19:10:58 2025, amanda.baber wrote:
> > Hi Murray,
> >
> > This is #2 of 2 from W3C.
> >
> > thanks,
> > Amanda
> >
> > =====
> >
> > Name: Ivan Herman
> >
> > Email: [email protected]
> >
> > Media type name: application
> >
> > Media subtype name: vp+sd-jwt
> >
> > Required parameters: N/A
> >
> > Optional parameters: N/A
> >
> > Encoding considerations: binary
> >
> > application/sd-jwt values are a series of base64url-encoded values
> > (some of which may be the empty string) separated by period ('.') and
> > tilde ('~') characters.
> >
> > Security considerations: As defined in https://www.w3.org/TR/vc-jose-
> > cose/#security-considerations. See also the security considerations in
> > Selective Disclosure for JWTs (SD-JWT)
> > (https://datatracker.ietf.org/doc/html/draft-ietf-oauth-selective-
> > disclosure-jwt).
> >
> > Interoperability considerations: As defined in
> > https://www.w3.org/TR/vc-jose-cose/#conformance.
> >
> > Published specification: https://www.w3.org/TR/vc-jose-cose
> >
> > Applications which use this media: W3C Verifiable Credential issuer,
> > holder, and verifier software, conforming to the [VC-DATA-MODEL-2.0]
> > (https://www.w3.org/TR/vc-data-model-2.0/), are among the applications
> > that will use the media types. Conforming application types are
> > described in https://www.w3.org/TR/vc-jose-cose/#conformance and
> > https://www.w3.org/TR/vc-data-model-2.0/#conformance.
> >
> > Fragment identifier considerations: N/A
> >
> > Restrictions on usage: N/A
> >
> > Provisional registration? (standards tree only): No
> >
> > Additional information:
> >
> > 1. Deprecated alias names for this type: N/A
> > 2. Magic number(s): N/A
> > 3. File extension(s): N/A
> > 4. Macintosh file type code: N/A
> > 5. Object Identifiers: N/A
> >
> > General Comments:
> >
> > Person to contact for further information:
> >
> > 1. Name: Ivan Herman
> > 2. Email: [email protected]
> >
> > Intended usage: COMMON
> >
> > Author/Change controller: W3C Verifiable Credentials Working Group
> > [email protected]
>
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>

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