I did my certifications with a public notary at the UPS store, and it was accepted at by IRCC. They don't stamp the actual copy anymore, but a "California Copy Certification By Document Custodian" form instead, and the notary did write and sign the "I certify that this is a true copy..." statement per the instructions on each copy. But had I known that the consulate could certify copies, I would have done that instead at the same time I went to pay the fee
.
I also did certifications with public notary and it was accepted as well.
They just did a copy certification by document custodian but did not write and sign on each photocopy (per instruction).
https://www.notaryrotary.com/archive/forum/2013/October/Asking_for_help_from_CA_Notaries_re_certifying_copies_.html
COPY CERTIFICATION BY DOCUMENT CUSTODIAN
I, ________________________________________________ of legal age,
(Name of document custodian)
being first duly sworn, hereby swear (or affirm) that the attached reproduction of
_____________________________________________________________________
(Description of document(s))
is a true and exact copy of the correct and complete original document.
_____________________________________________________
Signature of document custodian (Affiant)
=======================================================
State of California
County of ________________________
Subscribed and sworn to (or affirmed) before me on this _______ day of _______________ 20_____, by
________________________________________________________________
proved to me on the basis of satisfactory evidence to be the person(s) who appeared before me.
_____________________________
(Seal)