Bitcoin to be accepted by McDonald’s and Walmart via Lightning Network Jack Mallers, founder of Zap, is bringing Bitcoin back to its roots with an announcement that his Lightning Network wallet, Strike, has partnered with Shopify, NCR, and Blackhawk Network. According to Mallers, any website that uses Shopify online card transactions can now process payments using Bitcoin’s Lightning Network. The partnership is live right now and a massive step toward the mass adoption of Bitcoin.