[urn] Re: Registration for `c2pa` URN

Thank you!

From: Peter Saint-Andre <[email protected]>
Date: Tuesday, February 4, 2025 at 10:03 PM
To: Leonard Rosenthol <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: [urn] Re: Registration for `c2pa` URN
EXTERNAL: Use caution when clicking on links or opening attachments.


The registry has been updated to reflect this registration.

On 2/3/25 2:18 PM, Peter Saint-Andre wrote:
> Request submitted to IANA.
>
> On 2/3/25 9:41 AM, Peter Saint-Andre wrote:
>> My apologies - apparently sending a note to IANA totally slipped my
>> mind. I'll take care of this today.
>>
>> On 2/2/25 10:46 PM, Leonard Rosenthol wrote:
>>> Hey folks.
>>>
>>> I thought this was all put to bed and approved, but it was pointed
>>> out to me that our URN isn’t on the list at https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.iana.org%2F&data=05%7C02%7Clrosenth%40adobe.com%7C535c242d28fd41dcc01608dd4567c59c%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C638743034221689488%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=Io9mUoxgGztp7oOXw4IsvHsmyhXiG4VtQcRxrmBX63g%3D&reserved=0<https://www.iana.org/>
>>> assignments/urn-namespaces/urn-namespaces.xhtml <https://
>>> https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.iana.org%2F&data=05%7C02%7Clrosenth%40adobe.com%7C535c242d28fd41dcc01608dd4567c59c%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C638743034221710522%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=gyS%2BvqCqdk3M7V7mERtdIkbPhw6Qdq%2BqYvy8unQYGJY%3D&reserved=0<http://www.iana.org/> assignments/urn-namespaces/urn-namespaces.xhtml>
>>>
>>> Did I forget to do something after this message to make it final???
>>> What else needs to be done?
>>>
>>> Thanks,
>>>
>>> Leonard
>>>
>>> *From: *Leonard Rosenthol <[email protected]>
>>> *Date: *Saturday, August 17, 2024 at 1:13 AM
>>> *To: *Peter Saint-Andre <[email protected]>, Dale R. Worley
>>> <[email protected]>
>>> *Cc: *[email protected] <[email protected]>
>>> *Subject: *Re: [urn] Re: Registration for `c2pa` URN
>>>
>>> Thanks.  Updated ABNF. (we had too many `:`s coming up in conjunction
>>> with the optional values.
>>>
>>> c2pa_urn = c2pa-namespace UUID [claim-generator [version-reason]]
>>>
>>> c2pa-namespace = "urn:c2pa:"
>>>
>>> ; this definition is taken from RFC 9562
>>>
>>> UUID     =  4hexOctet "-"
>>>
>>>                                                  2hexOctet "-"
>>>
>>>                                                  2hexOctet "-"
>>>
>>>                                                  2hexOctet "-"
>>>
>>>                                                  6hexOctet
>>>
>>> hexOctet = HEXDIG HEXDIG
>>>
>>> DIGIT    = %x30-39
>>>
>>> HEXDIG   = DIGIT / "A" / "B" / "C" / "D" / "E" / "F"
>>>
>>> ; ASCII, but not Control Characters or Graphic Characters
>>>
>>> visible-char-except-space = %x21-7E / %x80-FF
>>>
>>> ; claim-generator-identifier is a string of 0 to 32 visible-char-
>>> except- space characters
>>>
>>> ; this means that an empty string is valid
>>>
>>> claim-generator = ":" claim-generator-identifier
>>>
>>> claim-generator-identifier = 0*32visible-char-except-space
>>>
>>> ; version-reason is a string consisting of a positive integer
>>>
>>> ; followed by an underscore and a positive integer
>>>
>>> version-reason = ":" version "_" reason
>>>
>>> version = 1*DIGIT
>>>
>>> reason = 1*DIGIT
>>>
>>> *From: *Peter Saint-Andre <[email protected]>
>>> *Date: *Friday, August 16, 2024 at 10:03 AM
>>> *To: *Leonard Rosenthol <[email protected]>, Dale R. Worley
>>> <[email protected]>
>>> *Cc: *[email protected] <[email protected]>
>>> *Subject: *Re: [urn] Re: Registration for `c2pa` URN
>>>
>>> EXTERNAL: Use caution when clicking on links or opening attachments.
>>>
>>>
>>> Feel free to send only the ABNF.
>>>
>>> On 8/16/24 6:41 AM, Leonard Rosenthol wrote:
>>>> We did find a few issues with the ABNF, so I have an update to that.
>>>>
>>>> Should I send a full update or just the changes?
>>>>
>>>> Thanks,
>>>>
>>>> Leonard
>>>>
>>>> *From: *Dale R. Worley <[email protected]>
>>>> *Date: *Tuesday, August 13, 2024 at 3:25 PM
>>>> *To: *Leonard Rosenthol <[email protected]>
>>>> *Cc: *[email protected] <[email protected]>
>>>> *Subject: *Re: [urn] Registration for `c2pa` URN
>>>>
>>>> EXTERNAL: Use caution when clicking on links or opening attachments.
>>>>
>>>>
>>>> Leonard Rosenthol <[email protected]> writes:
>>>>> Here is the revised registration proposal.   The links to 2.1 will be
>>>>> live tomorrow (2-Aug-2024).
>>>>>
>>>>> Leonard
>>>>> Namespace Identifier:  c2pa
>>>>>
>>>>> Version:  1
>>>>>
>>>>> Date:  2024-07-30
>>>>
>>>> It all looks good to me.  The only comment I have is that the ABNF
>>>> allows the version to have leading 0's, though the text makes clear
>>>> that
>>>> the *value* 0 is not permitted.  But as long as C2PA is OK with that,
>>>> that's fine.
>>>>
>>>> Dale
>>>>
>>>>
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>>>
>>
>

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