This document describes ClaimStore, a new proposed mini service that permits to exchange information about information claims within a set of collaborating heterogeneous information services.

A primary use case example is the exchange of information about persistent identifiers (such as DOI) in the domain of astrophysics and particle physics among ADS, arXiv, and INSPIRE services. This would permit to better track and disambiguate papers, offer cross-linking between services, or offer cross-search between services.

The driving idea behind ClaimStore is to offer a neutral micro-service that would be (1) storing claims that various collaborating services perform and (2) answering questions about claims.

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