You are able to access to some amount of Dark Web markets using only the link, that means next : prospective buyers and merchants are not allowed to register before they will gtab an alternative URLs from an previously joined vendor or buyer.
Those can be found at https://darkwebonion.com/, it stores updated alternative URL to concerning Deepweb markets. You may go to these alternative link to sign up at the sites.
If there are some issues with an access,for example, links won’t work, you shall lie in wait and check for Dark Web marketplaces urls. Carry on, because some of the markets close and let registrations periodically, based on server load.