Recover a password

The paper id is of the form year/id, but year can be 'xxxx'. Examples include 2021/023 or xxxx/4545.
An answer is required for the challenge "Enter the first name of the supposed inventor of bitcoin".

The password for this paper will be sent to all emails associated with the paper.

Note: In order to protect the privacy of readers, does not use cookies or embedded third party content.