Privacy Policy

This Privacy Policy explains what information we collect at Proofstack and how we use that information. It applies to information we collect when you use the website at www.proofstack.io and our downloadable applications for mobile devices, browsers or desktop. This policy applies to Proofstack’s collection and use of your information.

If you use Proofstack under the auspices of another company’s or organization’s account, they may collect and use additional information under a different set of policies. Please consult those policies as well.

Proofstack may integrate and contain links to other websites. This policy only applies to information collected and used on this website and/or application. Other websites are governed by different privacy policies.

Proofstack respects the privacy rights of users and recognizes the importance of protecting information collected about you. This privacy policy is an inseparable part of Proofstack Terms of Service. Use of Proofstack is considered consent to the terms and conditions included in this privacy policy.

Owner and Data Controller

Proofstack Pte. Ltd., 160 Robinson Road #14-04 Singapore 068914, support@proofstack.io

Information We Collect and Use

We collect user information. Some are personally identifiable. Other is aggregate data with no personal identification.

Account and Profile

To create an account on Proofstack, you must provide us with at least your name, email address and/or mobile number, and a password and agree to our Terms of Service, Privacy Policy and other policies if necessary.


It depends on your needs, any Data (created or modified by you, your admin, us and third-parties) used in the Services can be shared on the internet and controlled/recorded by third-party authorities, Distributed Ledger Technologies (or any similar technologies) or Crypto Currencies. Proofstack is not responsible for preventing or managing information broadcasted on them.

International Data Transfers

In accordance with and as permitted by applicable law and regulations, we reserve the right to transfer your information, process and store it outside your country of residence to wherever we or our third party service providers operate.

Log Data

When you access the Services, our system automatically records information sent from Software (e.g. web browsers and our mobile applications). The log data may include your Internet Protocol address, the address of your previously visited web page, browser settings and configurations, language, the date and time of your requests, and your Internet Service Provider. Log data is not routinely deleted.


If you access and use the Service from a computer, mobile phone, tablet, automobile, or other electronic devices, we may collect information about those devices. For example, our servers receive and store information about your computer and browser, including your WiFi, Internet Protocol (IP) address, browser type, and other related software or hardware information. If you access the Service from a mobile phone, tablet, automobile, or other electronic device, we may collect and store information such as device type, operating system version and type, unique identifiers carrier, and other related information for that device.


As part of registration for the Services, you agree to provide us with, and allow us to determine the approximate location. Additionally, we may collect and use approximated or real-time location information, such as GPS location, from devices you use to access the Services. We will provide you with notice and an opportunity to consent before we access and collect your real-time location information, and depending on your device manufacturer, you may have the ability to revoke this consent at any time.


Third party payment processors may collect and store billing address and credit card information on our behalf or we may do this ourselves. Proofstack offers a variety of services for paying for subscription plans. Purchases made through third-parties payment vendors are subject to Proofstack’s Terms of Service and this Privacy Policy, and the terms and policy established by the third-party vendor. Please familiarize yourself with the third-party payment vendor’s terms and conditions.

Service Integrations

Proofstack integrates with many web-based applications like Google Drive, Facebook, Twitter and YouTube. Integrating Proofstack with a service is at the discretion of the user. When an integration is performed, the user is requested to approve the information that is shared between the services (information necessary to carry out advertised transactions). Proofstack is not responsible for how shared information is used by other services. Proofstack does not receive or store passwords from any of these services. Integrations can be removed at any time.

Customer Communication

We may use the personal information you provided to communicate with you by email, telephone, chat or other means to answer questions about your account; provide information on site functionality; help troubleshoot issues; and alert you to major changes in site policies or functionality. We may also have to access your account information and Proof.Link to collect this information.

Proofstack is not obligated and will not give legal advice or participate in any legal matters. For any legal advice, contact a licensed lawyer in your jurisdiction. Proofstack does not use any data you provide for legal sufficiency or accuracy, provide opinions, draw legal conclusions, or apply the law to your situation.

You accept that you will not ask, accept or use any legal advice in any communication (via phone call, email, live chat, letter, Skype, Slack, Telegram, WhatsApp or any others) between Proofstack's customer support team, partners or automation or any related persons.

Personalized Content

We may use your information to personalize the look and operations of the website.

Promotional Offers

We may use and analyze collected information to provide promotional materials and offers by external business partners and us. You may opt out of these infrequent emails by clicking on unsubscribe at the bottom of the email message. Your personal information is not transferred to a third party without your explicit consent.

Sharing and Disclosure

We do not sell, rent, lease, or release your personal information to third parties without your explicit consent except as stated below:

● We may share your data with trusted partners to help us perform statistical analysis, send you email, provide customer support, or complete a transaction. Our partners may use your information only to provide services for you with respect to Proofstack and they are required to maintain the information confidentially.

● We may share your information when we believe that such sharing is necessary to prevent, investigate, or take action regarding any possible illegal activity; to comply with the law; protect a person from death or serious physical injury; or to protect our property rights.

● We may share your information when there are potential threats to the physical safety of a person, any violation of this Privacy Policy or Terms of Service or to respond to any claims of violation of the rights of third parties and/or to protect the rights, safety and property of Proofstack, our employees, our users, or the public. This could involve sharing your information with law enforcement, courts, government agencies, and/or other organizations.

● We may share aggregated and de-identified information with our partners or others for business or research purposes.

● If there is a change in control or sale of all or part of Proofstack, we may share your information with a third party, who will have the right to use that information in line with this Privacy Policy.

● We may employ third party companies and individuals to facilitate our Services (e.g. maintenance, analysis, audit, marketing and development). These third parties have limited access to your information only to perform these tasks on our behalf and are obligated to Proofstack not to disclose or use it for other purposes.


We offer a Proof.Link which contains following informations: the authority or method that timestamped your file and related informations, the date and time when your file was timestamped, the name of the Proof.Link owner, the hash values associated with your timestamp, geolocation, public note.

● Proof.Links are enabled by default for public view, therefore we and others will be able to identify you by your Proof.Link.

● Upon your request, Proofstack may transfer ownership of your Proof.Link(s). Any such user must accept this privacy policy and terms of service before becoming an owner.

● Proof.Links may be indexed and displayed through public search engines when someone searches for your Proof.Links and/or other keywords related with Proofstack.


Proofstack uses cookies, which are small files, to record log data. Cookies come in two forms: session cookies that are deleted at the end of every Proofstack session and persistent cookies that remain until their expiration date or are otherwise deleted.

Cookies help us provide individual users with better experiences and also provide detailed information for ways to improve the site for all users. Cookies customize your experience and preferences, allow you to access and use the website without re-entering your member ID and password, understand which areas and features are most popular, and count visits.

We may also collect information using web beacons (also known as "tracking pixels"). Web beacons are electronic images (also called "gifs") that may be used on the website or in emails that help us to deliver cookies, count visits, understand usage and campaign effectiveness and determine whether an email has been opened and acted upon.

Cookies do not transmit personal information from your computer. Rather, they link your login with the information you have already provided Proofstack. Doing so helps us monitor things such as how often you visit the website, when you visit, what services you use, which pages you use most, and so forth. This information helps us understand how specific individuals use the website to improve their experience and, in aggregate and anonymously, how our customers use the website to improve the website for everyone.

Cookies are necessary to use the website. You will lose functionality if you set your browser to reject cookies. Proofstack also uses other services to collect similar information to improve site service and provide customers improved experiences. All data collected by cookies and other session tracking tools are subject to the policies stated in this Privacy Policy statement.

We integrate with third-party applications and services that also use cookies and other tracking devices. We do not have access to the information third-party companies collect or use. Use of these sites is determined by each company’s legal policies. For example, the information you choose to post on Facebook through Proofstack is governed by Facebook’s policies.

We may use Proofstack, Google AdSense, Media.net, Infolinks, Amazon Associate and other advertising platforms to publish ads on pages published by us. Our third-party vendors may use cookies and similar technologies to provide you advertising based upon your browsing activities and interests. You may opt-out of the use of this cookie by visiting ad platform websites such as Google’s advertising and privacy page.

Business Transactions

As we develop our business, we may sell, buy, merge or partner with other companies or businesses, or sell some or all of our assets. In such transactions, user information may be among the transferred assets. We also may potentially collect new types of information after new partnerships or corporate acquisitions.

Children’s Information

Proofstack is not intended for children under 13. Contact us if you find out that a minor child has provided us with personal information. All minor accounts and associated information that come to our attention will be deleted.

Changes to This Privacy Policy

We may amend this policy occasionally. Those changes will be reflected on this page and a new revision date will be posted. We will alert you to significant or material changes to our policy with a more prominent notification. Continuing to use Proofstack after those changes mean you agree to the revised policy.

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