Yes. mioty is an open ETSI standard rather than one vendor’s proprietary system (see 1.5), several independent chipset vendors support it (see 2.15), and alliance certification specifically verifies interoperability between certified products from different manufacturers (see 7.10). This covers the mioty radio interface itself: certified end points work with certified base stations and Service Centers regardless of manufacturer. It does not cover application-layer payload semantics, where a shared blueprint format or profile is still needed so different devices’ data is interpreted consistently by the same platform.