# DOI registration for repositories

**URL:** <https://community.crossref.org/t/doi-registration-for-repositories/2076>\
**Category:** Technical Support\
**Tags:** content-registration, deposit\_support, content\_type\_advice, repositories\
**Created:** [8 September 2021 20:11 UTC](https://community.crossref.org/t/doi-registration-for-repositories/2076 "2021-09-08T20:11:36Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![AylaDendasck](https://avatars.discourse-cdn.com/v4/letter/a/c89c15/32.png) [@AylaDendasck](https://community.crossref.org/u/AylaDendasck)\
**Post date:** [8 September 2021 20:11 UTC](https://community.crossref.org/t/doi-registration-for-repositories/2076/1 "2021-09-08T20:11:36Z")

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Hello experts!

Can a repository have its own unique DOI? What is the registration algorithm?

Thanks in advance for your reply. 😄

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**Author:** ![Shayn](https://sea2.discourse-cdn.com/flex020/user_avatar/community.crossref.org/shayn/32/57_2.png) [@Shayn](https://community.crossref.org/u/Shayn)\
**Post date:** [9 September 2021 00:28 UTC](https://community.crossref.org/t/doi-registration-for-repositories/2076/2 "2021-09-09T00:28:52Z")

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Hi.

Can you give us a bit more information about your repository? What type of content does it contain?

Are you asking whether you can register a single DOI that would refer to the repository as a whole? Or individual DOIs for each item contained within that repository?

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**Author:** ![for.litbang](https://sea2.discourse-cdn.com/flex020/user_avatar/community.crossref.org/for.litbang/32/484_2.png) [@for.litbang](https://community.crossref.org/u/for.litbang)\
**Post date:** [9 September 2021 01:49 UTC](https://community.crossref.org/t/doi-registration-for-repositories/2076/3 "2021-09-09T01:49:43Z")

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is it possible to use one DOI prefix for two systems?  
we have already DOI prefix for OJS system.  
And we have a plan to use that DOI prefix also for another system using Eprints.  
Is it possible?

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**Author:** ![Shayn](https://sea2.discourse-cdn.com/flex020/user_avatar/community.crossref.org/shayn/32/57_2.png) [@Shayn](https://community.crossref.org/u/Shayn)\
**Post date:** [9 September 2021 12:48 UTC](https://community.crossref.org/t/doi-registration-for-repositories/2076/4 "2021-09-09T12:48:40Z")

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Yes, that’s possible. Your prefix is assigned to your organization, and the same prefix can be used to assign/register DOIs for any content that organization publishes, regardless of type or platform.

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**Author:** ![AylaDendasck](https://avatars.discourse-cdn.com/v4/letter/a/c89c15/32.png) [@AylaDendasck](https://community.crossref.org/u/AylaDendasck)\
**Post date:** [9 September 2021 17:02 UTC](https://community.crossref.org/t/doi-registration-for-repositories/2076/5 "2021-09-09T17:02:48Z")

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Hello Shayn! Yes, I can.

I want to assign the DOI record in a document, but this document doesn’t have ISSN. My question is: How do I assign the DOI to this document? Can I assign it with the record I already have? What would the record type be?

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**Author:** ![Shayn](https://sea2.discourse-cdn.com/flex020/user_avatar/community.crossref.org/shayn/32/57_2.png) [@Shayn](https://community.crossref.org/u/Shayn)\
**Post date:** [9 September 2021 23:54 UTC](https://community.crossref.org/t/doi-registration-for-repositories/2076/6 "2021-09-09T23:54:00Z")

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Hi,

You can see our list of supported content types [here](https://www.crossref.org/documentation/content-registration/content-types-intro/).

Do you have a sense of where the items in your repository might fit?

If there’s no ISSN, then I’m guessing it’s not a serial publication like a journal or conference series. Is it stand alone papers, like reports or working papers?

To backup a bit, has this content been formally published elsewhere before?