19. An apparatus according to claim 16 , wherein the apparatus permits one to authenticate RDF data, said instructions further causing the digital processor to: retrieve a set of statements from a remote data store; retrieve data representing a verification hash from the remote data store; and authenticating the statements by individually computing a hash of each statement, combining together the hash for each statement to obtain an aggregate hash, comparing the aggregate hash with the verification hash, and determining authenticity based on the comparison.
19. An apparatus according to claim 16 , wherein the apparatus permits one to authenticate RDF data, said instructions further causing the digital processor to: retrieve a set of statements from a remote data store; retrieve data representing a verification hash from the remote data store; and authenticating the statements by individually computing a hash of each statement, combining together the hash for each statement to obtain an aggregate hash, comparing the aggregate hash with the verification hash, and determining authenticity based on the comparison. 20. An apparatus according to claim 19 , wherein the instructions further cause the digital processor to authenticate the RDF data by further: retrieving from the remote data store a digitally-signed identifier, computing a locally-derived identifier based on the aggregate set of statements retrieved from the remote data store, and determining whether the digitally-signed identifier and the locally-derived identifier match; and determining authenticity based on comparison of both the verification hash with the aggregate hash, and the digitally-signed identifier with and locally-derived identifier.