Highlights List May 31, 2011   About renewal of certificates (IMPORTANT) TimeStamp Service down time: July 19, 2011, 12:30 to 12:55 p.m. (JST) TimeStamp Service down time: August 1, 2011, 12:30 to 12:55 p.m. (JST) *Rescheduled due to renewal of certificates(7/11/11) *Please note that you will need to download a root certificate. March 31, 2011   Suspension of the Service upon rolling blackouts March 14, 2011   Service regular stop due to further improvement of reliability TimeStamp Service down time : April 15, 2011, 12:50 to 12:55 p.m. (JST) TimeStamp Service down time : May 16, 2011, 12:50 to 12:55 p.m. (JST) TimeStamp Service down time : June 15, 2011, 12:50 to 12:55 p.m. (JST) TimeStamp Service down time: July 19, 2011, 12:50 to 12:55 p.m. (JST)(Rescheduled) TimeStamp Service down time : August 17, 2011, 12:50 to 12:55 p.m. (JST) TimeStamp Service down time : September 15, 2011, 12:50 to 12:55 p.m. (JST) TimeStamp Service down time : October 14, 2011, 12:50 to 12:55 p.m. (JST) TimeStamp Service down time : November 15, 2011, 12:50 to 12:55 p.m. (JST) TimeStamp Service down time : December 15, 2011, 12:50 to 12:55 p.m. (JST) TimeStamp Service down time : January 13, 2012, 12:50 to 12:55 p.m. (JST) TimeStamp Service down time : February 15, 2012, 12:50 to 12:55 p.m. (JST) TimeStamp Service down time : March 15, 2012, 12:50 to 12:55 p.m. (JST) Attention: Time Stamps cannot be issued during the period above. June 29, 2010   About renewal of certificates (Valid until maintenance on August 1, 2011) TimeStamp Service down time: July 20, 2010, 12:30 to 12:55 p.m. (JST) Please note that you will need to download a root certificate and an intermediate certificate.

News List July 12, 2010   Time-Stamping Service Practice Statement(TPS)2.2 published May 20, 2008   Modification of Time Attribute Certificate is scheduled by Seiko Instruments Inc.