There are many dedicated Timestamping Services for this Use-Case, one that has been around since ’95 and with a corrrespondingly solid reputation IMHO is http://www.itconsult.co.uk/stamper/stampinf.htm. But there are other services as well, just search for “Timestamping Service”… I’d steer clear of the Bitcoin-based ones, they tend to be… enthusiastic but not too proffessional.
OriginStamp is a Bitcoin-based service that seems to be solid.
It’s used by, for example, namespace’s Project Registration Database. (I built a custom PmWiki plug-in for this purpose, that allows any wiki page (or any wiki page you want) to automatically be OriginStamp’d upon creation. I haven’t released the code yet, but if anyone’s interested, I will.)
There are many dedicated Timestamping Services for this Use-Case, one that has been around since ’95 and with a corrrespondingly solid reputation IMHO is http://www.itconsult.co.uk/stamper/stampinf.htm. But there are other services as well, just search for “Timestamping Service”… I’d steer clear of the Bitcoin-based ones, they tend to be… enthusiastic but not too proffessional.
OriginStamp is a Bitcoin-based service that seems to be solid.
It’s used by, for example, namespace’s Project Registration Database. (I built a custom PmWiki plug-in for this purpose, that allows any wiki page (or any wiki page you want) to automatically be OriginStamp’d upon creation. I haven’t released the code yet, but if anyone’s interested, I will.)
you should include a link to https://originstamp.org/
Added, thanks!