We provide a Web API at https://api.cronstamp.com which you can use programmatically in your applications to perform document timestamping. The Web API does not implement document verification, which takes place entirely on the client side without involvement of our servers. If you need to perform both document timestamping and verification, have a look at our TypeScript library.
The Web API has only two endpoints, making it very easy to use: The /submit/ endpoint for submitting a document hash for timestamping, and the /precert/ endpoint for retrieving
the preliminary certificate.