TimeCert is a service for timestamping content. This provides evidence that something existed at a given time. TimeCert will give you the timestamp for when someone first referenced a given digest.
A Digest is like a fingerprint for a chunk of data. Digests looks like this:
While this may not mean anything to you and me, an application can generate this digest very easily and compare it against other digests. Technically speaking it is a Hex encoded SHA1 digest.
To use this in your own application all you have to do is do a http get request at one of the following URLS, where you replace the digest with your own digest:
- HTML http://timecert.org/a94a8fe5ccb19ba61c4c0873d391e987982fbbd3
- Just the time please http://timecert.org/a94a8fe5ccb19ba61c4c0873d391e987982fbbd3.time
- JSON http://timecert.org/a94a8fe5ccb19ba61c4c0873d391e987982fbbd3.json
- XML http://timecert.org/a94a8fe5ccb19ba61c4c0873d391e987982fbbd3.xml
- YAML http://timecert.org/a94a8fe5ccb19ba61c4c0873d391e987982fbbd3.yml
You can embed a digest within your own blog or web application. It will look like this:
This can be done by pasting this code in to your html page and having your blog or application calculate the digest for it: