The policies of the Royalroad Mathematics Foundation are in many ways similar to those of the Wikimedia Foundation, to whom we are grateful for their pioneering work in free online access to knowledge. Our Privacy Policy has accordingly been adapted from theirs, with modifications, and is therefore presented under the CC BY-SA 3.0 license, as theirs is. We emphasize that we are not affiliated with the Wikimedia Foundation in any way, despite our adaptation of the text and formatting of their Privacy Policy, and despite our use of links to their Glossary to help explain key terms in this Policy.


This Privacy Policy explains how the Royalroad Mathematics Foundation collects, uses, and shares information we receive from you through your use of Proofscape. It is essential to understand that, by using Proofscape, you consent to the collection, transfer, processing, storage, disclosure, and use of your information as described in this Privacy Policy. That means that reading this Policy carefully is important.

We do not sell or rent your nonpublic information, nor do we give it to others to sell you anything. We use it to figure out how to improve Proofscape.


Because everyone (not just lawyers) should be able to easily understand how and why their information is collected and used, we use common language instead of more formal terms throughout this Policy. To help ensure your understanding of some particular key terms, here is a table of translations:

When we say... ... we mean:
"the Royalroad Mathematics Foundation" / "the Foundation" / "RMF" / "we" / "us" / "our" The Royalroad Mathematics Foundation, Inc., the non-profit organization that operates Proofscape.
"the Site" / "our services" The Proofscape website and services including the main project, as well as APIs, emails, and notifications; excluding, however, sites and services listed in the "What This Privacy Policy Doesn't Cover" section below.
"you" / "your" / "me" You, regardless of whether you are an individual, group, or organization, and regardless of whether you are using Proofscape or our services on behalf of yourself or someone else.
"this Policy" / "this Privacy Policy" This document, entitled the "Royalroad Mathematics Foundation Privacy Policy".
"contributions" Content you add or changes you make to Proofscape.
"personal information" Information you provide us or information we collect from you that could be used to personally identify you. To be clear, while we do not necessarily collect all of the following types of information, we consider at least the following to be “personal information” if it is otherwise nonpublic and can be used to identify you:
(a) your real name, address, phone number, email address, password, identification number on government-issued ID, IP address, user-agent information, credit card number;
(b) when associated with one of the items in subsection (a), any sensitive data such as date of birth, gender, sexual orientation, racial or ethnic origins, marital or familial status, medical conditions or disabilities, political affiliation, and religion; and
(c) any of the items in subsections (a) or (b) when associated with your user account.
"third party" / "third parties" Individuals, entities, websites, services, products, and applications that are not controlled, managed, or operated by RMF. This includes other Proofscape users.

We recognize that only a minority of you are familiar with technical terms like “tracking pixels” and “cookies” used in the Privacy Policy. Whether you are brand new to privacy terminology or you are an expert who just wants a refresher, you might find the Wikimedia Foundation's Glossary of Key Terms helpful.

What This Privacy Policy Does & Doesn't Cover

Except as explained below, this Privacy Policy applies to our collection and handling of information about you that we receive as a result of your use of Proofscape. This Policy also applies to information that we receive from our partners or other third parties. To understand more about what this Privacy Policy covers, please see below.

Examples of What This Privacy Policy Covers

For the sake of clarity, this Privacy Policy covers:

  • Our main website, including user pages, discussion pages, and noticeboards.
  • Our blogs and APIs (unless we have provided a separate policy for those services).
  • Emails and notifications from us or sent to us from you.
More on what this Privacy Policy doesn’t cover

This section is part of the Privacy Policy and is meant to explain in detail which situations are not covered by our Privacy Policy.

Third parties
This Privacy Policy only covers the way RMF collects and handles information. Third parties who might receive information when you use Proofscape may include:
  • Service providers whom we may use to help provide our services to you.
  • Websites run by other organizations, like websites linked to from pages on our site. These organizations may receive information from you if you visit their websites after using Proofscape. They are governed by their own privacy policies.
  • Mobile applications provided by other organizations or individuals. These organizations or individuals may receive information from you if you use those applications to access Proofscape or Proofscape Site content. They are governed by their own privacy policies.

Use of info

Types of Information We Receive From You, How We Get It, & How We Use It

Your Public Contributions

When you make a contribution to Proofscape, including on user or discussion pages, you are creating a permanent, public record of every piece of content added, removed, or altered by you. The version history will show when your contribution or deletion was made, as well as your username. We may use your public contributions, either aggregated with the public contributions of others or individually, to create new features or data-related products for you or to learn more about how Proofscape is used.

Unless this Policy says otherwise, you should assume that information that you actively contribute to Proofscape, including personal information, is publicly visible and can be found by search engines. Like most things on the Internet, anything you share may be copied and redistributed throughout the Internet by other people. Please do not contribute any information that you are uncomfortable making permanently public, like revealing your real name or location in your contributions.

You should be aware that specific data made public by you or aggregated data that is made public by us can be used by anyone for analysis and to infer information about users, such as which country a user is from.

Account Information & Registration

You are not required to create an account to read the Proofscape Site. However, you need to create an account if you want to contribute.

If you want to create an account, we require a username, a password, and your email address. Your username will be publicly visible, so please be careful about using your real name as your username. Your password is only used to verify that the account is yours. Your email will not be publicly visible. Your IP address is also automatically submitted to us, and we record it temporarily to help prevent abuse. No other personal information is required: no name, no date of birth, no credit card information.

Once created, user accounts cannot be removed entirely (although you can usually hide the information on your user page if you choose to). This is because your public contributions must be associated with their author (you!). So make sure you pick a name that you will be comfortable with for years to come.

To gain a better understanding of the demographics of our users, to localize our services, and to learn how we can improve our services, we may ask you for more demographic information, such as gender or age, about yourself. We will tell you if such information is intended to be public or private, so that you can make an informed decision about whether you want to provide us with that information. Providing such information is always completely optional. If you don't want to, you don't have to—it's as simple as that.

Information Related to Your Use of Proofscape

We want to make Proofscape better for you by learning more about how you use it. Examples of this might include how often you visit Proofscape, what you like, what you find helpful, how you get to Proofscape, and whether you would use a helpful feature more if we explained it differently. We keep information related to your use of Proofscape confidential, except as provided in this Policy.

Information We Receive Automatically

Because of how browsers work and similar to major websites, we receive some information automatically when you visit Proofscape. This information includes the type of device you are using, the type and version of your browser, your browser's language preference, the type and version of your device's operating system, in some cases the name of your internet service provider or mobile carrier, the website that referred you to Proofscape, which pages you request and visit, and the date and time of each request you make to Proofscape.

Put simply, we use this information to enhance your experience with Proofscape. For example, we use this information to administer the site, provide greater security, and fight vandalism; customize content and set language preferences, test features to see what works, and improve performance; understand how users interact with the Site, track and study use of various features, gain understanding about demographics, and analyze trends.

Information We Collect

We actively collect some types of information with a variety of commonly-used technologies. These generally include JavaScript, and a variety of "locally stored data" technologies, such as cookies and local storage. We realize that some of these technologies do not have the best reputation in town and can be used for less-than-noble purposes. So we want to be as clear as we can about why we use these methods and the type of information we collect with them.

Depending on which technology we use, locally stored data can be anything from text, pictures, and whole modules (as we explain further below) to personal information (like your IP address) and information about your use of Proofscape (like your username or the time of your visit).

We use this information to make your experience with Proofscape safer and better, to gain a greater understanding of user preferences and their interaction with Proofscape, and to generally improve our services. We will never use third-party cookies, unless we get your permission to do so. If you ever come across a third-party data collection tool that has not been authorized by you (such as one that may have been mistakenly placed by another user or administrator), please report it to us at

Locally stored data and JavaScript help us do things like:

We believe this data collection helps improve your user experience, but you may remove or disable some or all locally stored data through your browser settings, depending on your browser. While locally stored data may not be necessary to browse the site, some features may not function properly if you disable locally stored data; in particular, you must enable cookies to be able to log in to your account.

While the examples above concerning information about you collected through the use of data collection tools are kept confidential in accordance with this Policy, please note that some information about the actions taken by your username may be made publicly available through public logs alongside actions taken by other users. For example, a public log may include the date your account was created along with the dates that other accounts were created on the Site. Information available through public logs will not include personal information about you.


If you create an account with Proofscape, you will be required to provide an email address at that time. If you use our Bug Report feature while not logged in, you will have the option to provide us with an email address. If for either of these reasons you provide us with an email address, it is kept confidential, except as provided in this Policy. We do not sell, rent, or use your email address to advertise third-party products or services to you.

We use your email address to let you know about things that are happening with the Foundation, or the Proofscape Site, such as telling you important information about your account, letting you know if something is changing about the Site or policies, alerting you when there has been a change to a module that you have decided to follow, and communicating with you about a bug report. Please note that if you email us, we may keep your message, email address, and any other information you provide us, so that we can process and respond to your request.

You can choose to limit some of these kinds of notifications, like those alerting you if a module changes. Others, such as those containing critical information that all users need to know to participate successfully in Proofscape, you may not be able to opt out of. You can manage what kinds of notifications you receive and how often you receive them by going to your Notifications Preferences.

We will never ask for your password by email (but may send you a temporary password via email if you have requested a password reset). If you ever receive such an email, please let us know by sending it to, so we can investigate the source of the email.

Surveys & Feedback

Participating in optional surveys or providing feedback helps us make Proofscape better. Because every survey and request for feedback may be used for various purposes, we will tell you, at the time we give you the survey or request for feedback, how we plan on using your answers and any personal information you provide. If you don't feel comfortable with how we plan on using the survey or feedback results, you are not obligated to take the survey or give feedback.

IP Addresses

Finally, when you visit Proofscape, we automatically receive the IP address of the device (or your proxy server) you are using to access the Internet, which could be used to infer your geographical location. We keep IP addresses confidential, except as provided in this Policy. We use IP addresses for research and analytics; to better personalize content, notices, and settings for you; to fight spam, identity theft, malware, and other kinds of abuse.


When May We Share Your Information?

With Your Permission

We may share your information for a particular purpose, if you agree.

For Legal Reasons

We may access, preserve, or disclose your personal information if we reasonably believe it necessary to satisfy a valid and legally enforceable warrant, subpoena, court order, law or regulation, or other judicial or administrative order. However, if we believe that a particular request for disclosure of a user's information is legally invalid or an abuse of the legal system and the affected user does not intend to oppose the disclosure themselves, we will try our best to fight it. We are committed to notifying you via email at least ten (10) calendar days, when possible, before we disclose your personal information in response to a legal demand. However, we may only provide notice if we are not legally restrained from contacting you, there is no credible threat to life or limb that is created or increased by disclosing the request, and you have provided us with an email address.

Nothing in this Privacy Policy is intended to limit any legal objections or defenses you may have to a third party's request (whether it be civil, criminal, or governmental) to disclose your information. We recommend seeking the advice of legal counsel immediately if such a request is made involving you.

For more information, we refer you to Wikimedia Foundation's Subpoena FAQ.

If the Organization is Transferred

In the unlikely event that ownership of all or substantially all of the Foundation changes, or we go through a reorganization (such as a merger, consolidation, or acquisition), we will continue to keep your personal information confidential, except as provided in this Policy, and provide notice to you via Proofscape at least thirty (30) calendar days before any personal information is transferred or becomes subject to a different privacy policy.

To Protect You, Ourselves & Others

We may need to share your personal information if it is reasonably believed to be necessary to enforce or investigate potential violations of our Terms of Use, this Privacy Policy, or any Foundation policies. We may also need to access and share information to investigate and defend ourselves against legal threats or actions.

We hope that this never comes up, but we may disclose your personal information if we believe that it's reasonably necessary to prevent imminent and serious bodily harm or death to a person, or to protect our organization, employees, contractors, users, or the public. We may also disclose your personal information if we reasonably believe it necessary to detect, prevent, or otherwise assess and address potential spam, malware, fraud, abuse, unlawful activity, and security or technical concerns.

To Understand & Experiment

We may share non-personal or aggregated information with researchers, scholars, academics, and other interested third parties who wish to study Proofscape. Sharing this information helps them understand usage, viewing, and demographics statistics and patterns. They then can share their findings with us and our users so that we can all better understand and improve Proofscape.

Because You Made It Public

Any information you post publicly on Proofscape is just that – public. For example, if you put your mailing address on your user profile page, that is public, and not protected by this Policy. Please think carefully about your desired level of anonymity before you disclose personal information on your user profile page or elsewhere.


How Do We Protect Your Data?

We strive to protect your information from unauthorized access, use, or disclosure. We use a variety of technical measures and procedures (such as access control procedures and network firewalls) designed to protect our systems and your personal information. Unfortunately, there's no such thing as completely secure data transmission or storage, so we can't guarantee that our security will not be breached (by technical measures or through violation of our procedures).

How Long Do We Keep Your Data?

Once we receive personal information from you, we keep it for the shortest possible time that is consistent with the maintenance, understanding, and improvement of Proofscape, and our obligations under applicable U.S. law. Non-personal information may be retained indefinitely.

Please remember that certain information is retained and displayed indefinitely, such as any public contributions to Proofscape.

Important info

For the protection of the Royalroad Mathematics Foundation and other users, if you do not agree with this Privacy Policy, you may not use Proofscape.

Where are Proofscape's Servers & What Does That Mean for Me?

RMF has servers located in the U.S. If you decide to use Proofscape, whether from inside or outside of the U.S., you consent to the collection, transfer, storage, processing, disclosure, and other uses of your information in the U.S. as described in this Privacy Policy. You also consent to the transfer of your information by us from the U.S. to other countries, which may have different or less stringent data protection laws than your country, in connection with providing services to you.

Our Response to Do Not Track (DNT) signals

We are strongly committed to not sharing nonpublic information with third parties. In particular, we do not allow tracking by third-party websites you have not visited (including analytics services, advertising networks, and social platforms), nor do we share your information with any third parties for marketing purposes. Under this Policy, we may share your information only under particular situations, which you can learn more about in the "When May We Share Your Information" section of this Privacy Policy.

Because we protect all users in this manner, we do not change our behavior in response to a web browser's "do not track" signal.

Changes to This Privacy Policy

Because things naturally change over time and we want to ensure our Privacy Policy accurately reflects our practices and the law, it may be necessary to modify this Privacy Policy from time to time. We reserve the right to do so in the following manner:

We ask that you please review the most up-to-date version of our Privacy Policy. Your continued use of the Proofscape Site after this Privacy Policy becomes effective constitutes acceptance of this Privacy Policy on your part. Your continued use of Proofscape after any subsequent version of this Privacy Policy becomes effective, following notice as outlined above, constitutes acceptance of that version of the Privacy Policy on your part.

Contact Us

If you have questions or suggestions about this Privacy Policy, or the information collected under this Privacy Policy, please email us at

Thank You!

Thank you for reading our Privacy Policy. We hope you enjoy using Proofscape and appreciate your participation.

This privacy policy went into effect on January 1, 2016. It was adapted and modified from Wikimedia Foundation's Privacy Policy and is likewise licensed under cc-by-sa 3.0. RMF is not affiliated with the Wikimedia Foundation in any way.