No cookie option?

[jessienab]

Perhaps paired with the no-JS implementation, a no-cookie option for progressing would be nice. I didn't whitelist cookies with uMatrix on xeiaso.net and got stuck in a refresh loop.

[Xe]

I don't think it's technically possible to do this without cookies. Cookies are how the web shares state.

[jessienab]

True... my other thought was to do like some kind of "confirmation hash" in the URL for the reload, but then you'd have to do that for every page given the state isn't saved...

[ghost]

How about temporarily allowing all access via an IP-address, from which a successful Proof-Of-Work was received, to bypass Anubis?
This permission could be limited by time, number of requests, and/or amount of data transferred, after which the next request will require another Proof-Of-Work.

For example: Allowing computers using a specific IP-address to bypass Anubis for 48 hours, 1000 requests, or until 100 MB of data was transferred, and then requiring another Proof-Of-Work for the next request.

Maybe further limited to a specific set of resources, so that, after being allowed to bypass Anubis for *.*/1/index.html, one can access *.*/1/style.css and *.*/1/another/webpage.html without another check, but accessing *.*/2/index.html would require another Proof-Of-Work.
Maybe also with a limit on parallel access, so that one cannot start more than 5 (potentially large) downloads at the same time to try to bypass the size-limit (ongoing downloads should not be interrupted), or a file-size-check for the file to be accessed, so that if downloading the entire file would result in going over the size-limit, another Proof-Of-Work will be required for the next request.

[Xe]

I don't think that making this work without cookies is in scope. This is intentional to make it more difficult for current industrial implementations of scraping engines to handle Anubis. Based on insider knowledge, they either share cookies between all session they are scraping with or don't save the cookies at all. This means that Anubis will correctly challenge them at every point.