There actually are several time stamping services based on RFC 3161 - many CAs offer this service, and Microsoft uses it as part of driver signing. https://en.

There actually are several time stamping services based on RFC 3161 - many CAs offer this service, and Microsoft uses it as part of driver signing. https://en.wikipedia.org/wiki/Trusted_timestamping https://en.wikipedia.org/wiki/Trusted_timestamping