Anyone who own bitcoin before this fork of 2017, can request at any time the claim of BTX coins? In addition to bitsend partner, can BTX be used as a form of payment in bitsend?
You can get your BTH if you had bitcoin on November 25, 2017. But provided that you kept it in a cold purse. If you stored bitcoin on the exchange, it will not work.
Why are you talking about BTH? This is a Bitcore BTX forum.