FAIR Signposting (2016-) is an HTTP-based simplistic interpretation of FAIR DOs focusing on features that are realistically implementable at scale, see https://signposting.org/FAIR/. For example, it relies on typed links to group DO components and relies on media types (https://www.iana.org/assignments/media-types) to associate operations with DO content; no special purpose registries. Adoption is steadily growing and major repository platforms have already implemented support, see https://signposting.org/adopters/.
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