LTV (Long-Term Validation)

Long-term validation (LTV, Long-Term Validation) is a feature of PDF signatures (PAdES B-LT/B-LTA) that embeds in the signed document all the data necessary for future signature verification: certificate chain, timestamps, OCSP responses or CRL. Thanks to LTV, a signed document remains verifiable years after signing, even if the certificates have expired. Certyneo integrates LTV to guarantee probative value for 10 years.