Legal & Privacy.

1. Overview

HashCare is a public proof-of-existence registry run by SolvingHealth in Boulder, Colorado. This page covers the terms of use, what we receive, and how to reach us.

This page describes what is live on the day it is dated. We change it when the product changes and update the date at the top.

2. Terms of Use

By using HashCare you agree to the following. If you do not agree, please do not use the service.

What HashCare is

HashCare shows that a document with a given fingerprint existed, unchanged, at a point in time. It is not a clinical signature, a notarization, a copyright registration, legal advice, or medical advice. A fingerprint does not show that a document is true, complete, or signed by the person it names.

What you agree to

• You will use HashCare only for lawful purposes and only as permitted by these Terms.
• You will not attempt to gain unauthorized access to any system or data that is not yours, or to overload the service.
• You will not put personal, confidential, or unlawful content in a label.

Service availability

HashCare is provided "as is". We may add, change, suspend, or discontinue features without notice. We make no warranty that the service will be uninterrupted or error-free. The daily countersign runs on one machine and has missed days when that machine was off or offline; the dates it ran are listed at /roots/index.json.

Limitation of liability

To the maximum extent permitted by law, SolvingHealth, its affiliates, officers, and agents are not liable for any indirect, incidental, consequential, or punitive damages arising from your use of HashCare. Our total liability, for any claim arising out of these Terms, is limited to one hundred US dollars.

3. Privacy

The design keeps what we receive small.

What we receive

• When you anchor: the fingerprint, the optional label you type, and the time. The document itself is not sent.
• When you look a fingerprint up: only if you press the live lookup, the fingerprint. Checking a record on /check sends nothing.
• If you leave an email on the home page: the address, so we can tell you when the physician-review rail is real. Nothing else is sent to it.
• Standard server records: our host keeps ordinary request logs, and a counter per network address limits abuse.

What we do not do

• No accounts, no stored documents. There is no login, and no document or health record is stored.
• No sale of personal data. Not to advertisers, not to data brokers, not to insurers.
• No ad trackers and no analytics scripts. Page fonts load from Google Fonts, so Google sees that your browser asked for them.

Your rights

• Ask us to remove a label or an email address, using the contact below. A fingerprint and its timestamp stay in the registry where the law allows.
• Ask what we hold about you. For an anchor that is the fingerprint, label and time; for the home page list, the address.

Residents of California, Colorado, Virginia, Connecticut, and Utah have additional rights under state privacy laws (CCPA/CPRA, CPA, VCDPA, CTDPA, UCPA). We honor those rights for every visitor regardless of state.

4. Health Data & HIPAA

HashCare does not receive health records, so please do not type protected health information into a label or anywhere else on this site. A fingerprint of a document is not protected health information by itself, which is why anchoring can be public.

No Business Associate Agreement is in place. The determinations the ClinicalSwipe physician review loop anchors here are a synthetic pilot, with no real patient involved.

5. Intellectual Property

The HashCare name, logo, and site design belong to SolvingHealth. A document you fingerprint remains yours; we never receive it. The published review standard at /real-review is open to adopt.

Feedback you send us may be used to improve the product without obligation to you, unless we have a separate agreement.

6. Contact

For legal notices, privacy requests, or label removal, use:

SolvingHealth
Boulder, Colorado, USA
Privacy & legal: solvinghealth.com/legal

For a security disclosure, use the same page and say it is a security disclosure.

7. The Anchor Registry

hashcare.com/anchor lets anyone anchor the SHA-256 fingerprint of a document to a public registry. The document itself is hashed in your browser and is never transmitted to or stored by us — we receive only the 64-character fingerprint, an optional label you write, and a timestamp.

Labels are public. Anything you type in the label field can be seen by anyone who verifies that hash. Do not put personal, confidential, or identifying information in a label. Labels are reviewed before appearing in the site's public list; direct hash lookups return the label as submitted, marked as user-supplied.

Hashes cannot be reversed into documents, and anchors are not rewritten, which is what makes them proof; a correction is published as a dated erratum. If a label contains content that should be removed (personal information, abuse, unlawful content), request removal via solvinghealth.com/legal; we will remove or blank the label while preserving the hash and timestamp where legally possible.

Anchoring proves that a document with a given fingerprint existed at a point in time. It is not a clinical signature, notarization, copyright registration, or legal advice.