-----BEGIN PGP SIGNED MESSAGE----- I have recently setup a free PGP timestamping service which operates by email. The objective of the service is to be able to produce "trustworthy" timestamps which cannot be backdated without detection. It achieves this by:- (a) giving every signature a unique sequential serial number; (b) every day making a ZIP file of that day's detached signatures and feeding the ZIP file back for signing (and hence the assignment of another serial number); (c) making available details of the highest serial number on each day as well as the signed ZIP files via email (and shortly WWW); (d) weekly publishing details of the DETACHED signatures of the ZIP file in alt.security.pgp and to users requesting them on a list server. I would be interested in folks comments on this "trustworthiness", including any weaknesses or possible improvements. Full details of the service can be found at:- http://www.itconsult.co.uk/stamper.htm Thank you in advance. Best wishes, Matthew -----BEGIN PGP SIGNATURE----- Version: 2.6.2i iQCVAgUBMQKHtAKwLwcHEv69AQFVLgQAjVyX5w0YM75gskinZ74dkqQ9vDfnOlWt OD28p/0ot+85q+UP8hreS61Fs1bGDqgH5YL3/2Lviy+xhlIj9x8kVw+Rj1KrZvI+ Jt7pInfqwdx9gYxVGDuP0rIcCH+74vFWQJu1UMpZWORq4gv4t/IS1cBJJRaYSyrM hhcdHPRU6RE= =qD+L -----END PGP SIGNATURE-----