The Materials Cloud Archive is an open repository for research data that are relevant to computational materials science. Submissions to the Materials Cloud Archive are expected to be of interest and value to the field; they will receive persistent DOIs and a guaranteed lifetime of at least 10 years from submission.
You can find all informations on the submission procedure, the moderators’ checklist, the moderation policies, and the Materials Cloud Archive policies at this link.
Briefly, to submit a record to the Materials Cloud Archive you are asked to fill in a form with the research data and associated metadata that will appear in the final record - these include the title of the submission, its authors, a meaningful abstract/description, and other metadata as described in the moderator's checklist.
Note that to do this you must register with the Materials Cloud Archive. This is needed so that you will be able to (1) create new versions of records that have been accepted and published on the Materials Cloud Archive, (2) update their references and keywords, and (3) have access to your personal work area with all records you submitted to the Archive. In addition, moderators can contact you for any comments/explanations during the moderation process, and notifications can be sent to you regarding the status of your record throughout the entire submission process.
A preliminary DOI is assigned immediately upon submission. The DOI for a draft record will not resolve until moderators' approval, but will remain unchanged, and can be used elsewhere to refer to the record (e.g. in a scientific journal publication that is being prepared). After submission, the record will be reviewed by a moderator within one week (see moderation policies); moderators may ask for clarifications or revisions, to uphold the standards of the archive, or even decline records deemed out of scope. Once your record is approved, it will appear on the Materials Cloud Archive, and its DOI will start resolving at 8 PM CET the same day (or the following day if approved after 8 PM). The record will also receive a Materials Cloud record ID, that plays the same role that the volume and article number do in a standard publication, as described here.