We've had submissions of topic papers by multiple people in the past, and we gave multiple discount codes. However, in all of these cases, the papers were comprehensive and all the authors significantly contributed.
However, we've never had a formal policy about this, however, the submission of eSSIF-Lab: Towards a European SSI ecosystem pushes us to address it. First, for the authors of this specific paper, and in general for the future.
My proposal is that list of authors must be explicit and should have no more than 3 authors; that the submission needs closure (no rolling PRs) to include all the authors before any promo codes are offered, and that an RWOT Board Member can exceptions for significant collaborations.
Comments?