Re: Advice on NID for media fingerprint

Sean Leonard <dev+ietf@seantek.com> Tue, 03 May 2016 00:22 UTC

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Subject: Re: Advice on NID for media fingerprint
From: Sean Leonard <dev+ietf@seantek.com>
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Date: Mon, 2 May 2016 17:23:05 -0700
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To: Jonas Oberg <jonas@fsfe.org>
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Yep. Ditto.

With URNs, resources/things named by the URN can’t collide. The namespace is supposed to guarantee that collisions (i.e., reassignment or multiple-assignment) does not occur.

So URN is inappropriate.

You could register a URI scheme, which has a lower barrier to entry (in some respects). However, it’s not even clear that you need these identifiers to fit in a URI protocol slot. If you don’t need to shoehorn the identifier into a URI protocol slot, don’t bother.

Best regards,

Sean

> On Apr 25, 2016, at 10:53 AM, Dale R. Worley <worley@ariadne.com>; wrote:
> 
> Certainly the idea is interesting, but I'm not sure it qualifies as a
> system of "names" -- in a sample of 100,000 images, 1% of the images had
> the same blockhash as one or more other images.  (There are something
> like 30 million images in Wikipedia, which would imply over 300,000
> collisions.)
> 
> Dale
>