Hyperledger uses a ___ system under the hood to verify the identities of its nodes

English as a Second Language English Vocabulary, Grammar and Idioms
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Hyperledger uses a ___ system under the hood to verify the identities of its nodes. (*) node repository (*) PKI (*) distributed consensus (*) digital notary

This is a companion discussion topic for the original entry at https://english.best/questions/22848,hyperledger-uses-a-___-system-under-the-hood-to-verify-the-identities-of-its-nodes/
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