When fetching the original resource and a recently created memento, the memento has a few different triples. Some are not an issue, but others may be. The memento is not the same as the original resource (at least in this serialization).
// version it
$> curl -X POST http://localhost:8080/fcrepo4/rest/test1/fcr:versions
which creates a memento – fetch memento information by querying the fcr:versions endpoint.
Then get the Original Resource and the memento and compare them:
$> curl http://localhost:8080/fcrepo4/rest/test1
$> curl http://localhost:8080/fcrepo4/rest/test1/fcr:versions/UNIQUEID
The differences in the memento's triples are as follows:
rdf:type ldp:RDFSource ;
rdf:type ldp:Container ;
fedora:writable true ;
rdf:type ldp:BasicContainer ;