Yes, Cloudimage supports URL signature feature to prevent misuse of images. This feature is available to customers with PRO plans and above.
To prevent URL tampering and protect your token, every Cloudimage URL can be secured with an SHA-1 HMAC Signature.
The signature is calculated as follows:
Signature = sha1('Salt' + 'URI') ; where URI = original_image_url?operations&filters
You can read our documentation here for more information.
Contact us to enable the signature and set up the Salt for your company token.