You can to log into some amount of Darknet markets only with an alternative URL, what means the following : new buyers and merchants are not allowed to enroll until they will obtain an link from an previously signed in shopper.
Those can be found at http://deeponionmarkets.com/, it has new alternative links to all of the Darknet markets. You may go to these links to register on the sites.
Whenever there are some problems with an access,for example, links won’t work, you should wait and check for Deep Web marketplaces link. Keep trying, because a several amount of the marketplaces shut down and launch signing up from time to time, based on server load.