The Academy/DPHA has named Portico as a perpetual access source through which subscribers may request ongoing access to content.
Portico was the first digital preservation service to be independently audited by the Center for Research Libraries (CRL) and certified as a trusted, reliable digital preservation solution that serves the needs of the library community (following the general metrics found in their Trustworthy Repositories Audit & Certification). The stated purpose of the CRL audit was to promote understanding of and, where justified, confidence in, digital repositories. Read the final audit report.