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This proliferation very quickly got to its limits.
In the DI4R scenario the user brings some of their own attributes in a wallet or similar technological solution. These attributes may be in the form of claims, in which case they should be verifiable. Since the claim issuers are known from the claim itself, there is no need for discovery of where to turn for verification.
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But this infrastructure can be more lightweight than a federation metadata and tools: for instance, it may be implemented on a blockchain, not requiring any central nodes or governance.
DI4R In Proxy Approach
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