No, the copyright status of your work remains the same. You merely grant The Vault a license that allows your work to be made available on The Vault and Arca and to preserve your work by migrating it into newer formats as technology changes
You will need to obtain the consent of all coauthors prior to depositing in the Vault..
Some use of third party material is permissible under the Fair Dealing provision of the Copyright Act. If your use is not covered under Fair Dealing, you will need to seek permission from the creator/rights holder if you want to include any third party copyrighted material such as extracts from books, journals or other publications, or illustrations such as images, maps, photographs, tables, etc. Note: the rights holder may be the author of a work, a publisher, an illustrator etc.
The SPARC Canadian Author Addendum enables authors to try and secure a more balanced agreement by retaining select rights, such as the rights to reproduce, reuse, and publicly present the articles they publish for non-commercial purposes.
SHERPA/JULIET provides summaries of funding agencies' grant conditions on self-archiving of research publications and data.
This will depend on the publication agreement you signed with your publisher. Please check your Copyright Transfer Agreement.
You can also check the SHERPA/RoMEO website for publishers' copyright and self-archiving policies to find permissions normally given to the author as part of each publisher's copyright transfer agreement. Many publishers allow some version of a previously published article to be deposited in an open access repository as long as you follow their conditions.
You can also check your own publisher’s website. When in doubt it is best to contact the publisher directly for permission to contribute your article to The Vault.
This depends on your publisher. Publishers often permit authors to self-archive the final pre-publication version of their works, but this is not a universal practice. You can also check the SHERPA/RoMEO website for publishers' copyright and self-archiving policies.
Of course, if you own copyright of your work, you can post whatever version you prefer though it is important to remember that some publishers do consider depositing to a digital repository to be "prior publication".
Most publishers allow some version of the author's manuscript to be submitted to an institutional repository, with some of the more generous publishers allowing the publisher's version to be deposited. There are different versions of an author's manuscript:
Preprint: The "pre" in preprint means pre-refereeing (i.e., unrefereed) research papers, almost all of them prepared for submission to refereed journals (or refereed conference proceedings) for refereeing.
The "post" in postprint means post-refereeing (i.e., refereed, revised, accepted final drafts of) research papers, all of them appearing in or soon to appear in refereed journals (or refereed conference proceedings). Note that the author's final draft (author's final version) will have the same content as the publisher's final version, but the author's final version has far fewer restrictions on it than the publisher's version of record. For example, the author's final version could be deposited in The Vault, but the publisher version could not be deposited.
Definition:
A post-print is a document that has been through the peer review process and incorporated reviewers comments. It is the final version of the paper before it is sent off to the journal for publication. It may be missing a final copy edit (if the journal still does that) and won't be formatted to look like the journal. It still looks like the double spaced .doc file. Sometimes, the term "pre-print" is used interchangeably with "post-print," but when it comes to permissions issues, it is important to clarify which version of a manuscript is being discussed.
https://blogs.scientificamerican.com/information-culture/understanding-your-rights-pre-prints-post-prints-and-publisher-versions/
If you have published in journals that do not have clear guidelines on author rights for publishing pre-prints, postprints, publisher PDFs, ask the publisher/editor what you can publish in The Vault.
Check the website of the publisher. They will often have a link at the bottom of the website entitled: "Terms of Use" or "Contact Us" or "Authors and Permissions" and will give an address of where to send the request. Often it is easier to get permission from the publisher when the author contacts the editor they worked with during the publication process.
Check out the Library’s Copyright guide.