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

Hi Murray,

As I pointed out a week ago in https://mailarchive.ietf.org/arch/msg/media-types/dxo6T4ZPnm5ZUGGlQ-RxzuboAlE/, the IETF made an official liaison inquiry to the W3C about whether the security considerations for the "Securing Verifiable Credentials using JOSE and COSE" specification, in which this registration is requested, are complete and accurate.  The official response from the W3C is that they are.

Therefore, I don't believe that there remain any reasonable grounds for delaying this registration.  Please proceed.

                                Thank you,
                                -- Mike

-----Original Message-----
From: Amanda Baber via RT <[email protected]>
Sent: Wednesday, December 10, 2025 3:59 PM
Cc: [email protected]; [email protected]
Subject: [media-types] [IANA #1421575] application/vp+sd-jwt registration request

Hi Murray,

Sending a reminder for this one.

Liaison response: https://datatracker.ietf.org/liaison/2078/

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.w/
> 3.org%2FTR%2Fvc-jose-&data=05%7C02%7C%7C272c94e920ae45c788d208de383fa9
> ac%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C639010043239096752%7CU
> nknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiO
> iJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=KY0rBHh
> hg0RXp1yJ2aoKM3KGKv1MKiGMi3Hni06%2FqgE%3D&reserved=0
> cose/#security-considerations. See also the security considerations in
> Selective Disclosure for JWTs (SD-JWT)
> (https://data/
> tracker.ietf.org%2Fdoc%2Fhtml%2Fdraft-ietf-oauth-selective-&data=05%7C
> 02%7C%7C272c94e920ae45c788d208de383fa9ac%7C84df9e7fe9f640afb435aaaaaaa
> aaaaa%7C1%7C0%7C639010043239120159%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1
> hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUI
> joyfQ%3D%3D%7C0%7C%7C%7C&sdata=3UFNyRL9UTpN%2Bf7z8zgncu9utAL70ROF%2FT2
> SSmhXOqM%3D&reserved=0
> disclosure-jwt).
>
> Interoperability considerations: As defined in
> https://www.w3.org/TR/vc-jose-cose/#conformance.
>
> Published specification:
> https://www.w/
> 3.org%2FTR%2Fvc-jose-cose&data=05%7C02%7C%7C272c94e920ae45c788d208de38
> 3fa9ac%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C639010043239159273
> %7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsI
> lAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=zBH
> wgVVfjNlSgDR%2BvCYcsFtNADcw0ZmJdodWEsk7%2Fk4%3D&reserved=0
>
> 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%2FTR%2Fvc-data-model-2.0%2F&data=05%7C02%7C%7C272c94e920ae45c78
> 8d208de383fa9ac%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C639010043
> 239178963%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=ExEctd3APJrmBrmYT7y4bdGMpZmJBde%2FOBY33B%2FCIbA%3D&reserved=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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