Society of Professional Interpreters
Verified certificate
This page is the record the Society of Professional Interpreters keeps of this certificate. A copy is genuine when its name, title and date match this page at this address. A revoked certificate says so here.
To check a PDF, upload it at interpretersociety.org/verify. Every PDF downloaded from this page carries the Society's digital signature, and the check shows whether anything on the file has been changed.
The Society seals its record of every certificate, and an independent company timestamps it, so a record altered after the certificate was issued no longer matches.