The address of the timestamping server.
property TimestampServer: String read get_TimestampServer write set_TimestampServer;
Use this property to set the address of the TSA (Time Stamping Authority) server to use for timestamping the signature (normal signing) or the document (LTV update).
If your timestamping service enforces credential-based user authentication (basic or digest), you can provide the credentials in the same URL:
For TSAs using certificate-based TLS authentication, provide the client certificate via the TLSClientChain property.