During the Blind Phase Designers cannot see entries or comments made by fellow Designers. All entries & comments during the Blind Phase will have a small Blind icon beside them.
This phase lasts 4 days. The fully blind portion is 2 days and then a 2 day Open Phase. Once this phase is completed, the contest will move into the "Finalists" phase.
Please refer to this FAQ (and others) prepared for Designers which helps them understand how copying is defined by the site: http://logotournament.com/help/designer/120