The statement is strongly supported by multiple high-authority and relevant sources. The most compelling evidence comes from the Neue Zürcher Zeitung (NZZ), a highly reputable Swiss newspaper, which features articles directly on the topic, with one tellingly titled 'Spar, the rural crypto-pioneer.' This provides direct, credible confirmation from a primary journalistic source. Further corroboration comes from the cryptocurrency industry itself; an announcement on the Binance platform, a major exchange, lists SPAR Switzerland as a merchant, which strongly indicates that cryptocurrency payments are accepted and points towards the likely payment system or 'application' being used. Other sources, such as Bitget and a secondary article citing NZZ, also consistently support the claim. There is no conflicting evidence among the relevant sources provided. The two irrelevant sources were correctly disregarded. The cumulative evidence from top-tier news and major industry players makes the statement very likely to be true.