Terms of use and disclaimer

proof.md is provided “as is” and “as available”, without warranties of any kind, express or implied, including warranties of accuracy, completeness, timeliness, availability, fitness for a particular purpose and non-infringement. You use it at your own risk.

proof.md shows no third-party data: no prices, rates, fees, market data or provider data, and it fetches nothing from other sites. Every number a tool uses comes from your request or from a generic formula the tool states. Those formulas are simplifications. They can be wrong for your case, and the skill and this site can be inaccurate, incomplete or not current.

Check every figure yourself, with the people and sources you rely on, before you act on it.

Nothing here is legal, compliance, security, financial or tax advice. A valid signature shows a record is unchanged and that the signer held the key; it is not identity verification, notarization, legal evidence or a compliance record. Nothing on proof.md is a recommendation or endorsement of any provider, product or service. The PROOF.md skill is guidance for software agents and doesn’t guarantee any outcome.

The tools calculate, compare and check what you send against rules you choose. They don’t approve, enforce, certify or verify anything, including anyone’s identity, they can miss problems, and a clean result isn’t an approval or an assurance. Nothing on proof.md makes anything compliant with a law, regulation or standard, legally valid, or safe.

A valid signature shows that a record hasn't changed since it was signed and that the signer held the matching private key. It doesn't show that the claims in the record are true, complete or made by the person or system named.

Nothing here is identity verification, notarization, trusted timestamping, legal evidence, an audit, or a compliance or regulatory record, and nothing here makes a record, approval or permission legally valid or binding. Times in records are written by the signer and are not checked.

An address record shows only who claimed an address and how. It never verifies that an address exists, works or belongs to anyone. A payment reference record shows nothing about whether a payment was made or settled; proof.md never moves money.

check_permission and the other tools compare and calculate. They don't authorize, approve or enforce anything. You and your systems decide what an agent may do.

You are responsible for your keys. proof.md never asks for, makes, receives or stores your private keys, and refuses requests that look like they contain one. That guard looks only for common key formats and names, and it can miss others, such as a bare key with no label or an unusual encoding. If you send a private key anywhere, treat it as exposed and replace it. Keys made in the page are held by your browser; the example key on this site is public and proves nothing.

Cryptographic methods can be weakened by future research, by flaws in software or hardware, or by how keys are kept. We don't promise any method here stays secure.

proof.md never holds private keys, stores records, verifies identity or certifies anything. Anything your agents do runs on your own accounts, under the terms of the services you use, at your cost. You are responsible for the settings you choose, for approvals, for your credentials and for following every service’s terms and the law. Settings an agent drafted are yours only once you agree to them.

To the fullest extent permitted by law, the operators and contributors of proof.md are not liable for any direct, indirect, incidental, special, consequential or punitive damages, or for any loss of money, data, profits or business, arising from your use of, or inability to use, proof.md or any information from it, even if told such loss was possible. Where liability can’t be excluded, our total liability is limited to US$100.

The skill and the tools use generic terms and public, generic formulas. Names of standards, units and file formats are used only to describe them.

Where code on proof.md (for example, an install command or a configuration file name) mentions a tool, client or service so that it works with it, that name is a trademark of its owner, used only for compatibility. proof.md is not affiliated with, endorsed by or sponsored by any of them. If you own a mark and want us to change how we use it, write to us and we’ll act promptly.

Don’t overload, attack or try to disrupt proof.md, and don’t use it to break the law or anyone else’s terms. We may rate-limit, block, change or stop any part of proof.md at any time, without notice.

proof.md has no accounts, sets no cookies and asks for no personal information. To learn what’s useful, we count page views, copies, skill fetches and API and MCP calls with anonymous server-side events. We store no IP addresses: a one-way daily hash of the IP address and browser string counts unique visitors, and the country comes from our host’s request headers. Counting runs only on the live site, and visiting with ?internal=1 turns it off in that browser.

Settings and anything you send to a tool are used only to answer that request. proof.md doesn’t store them and doesn’t send their values to analytics: only the tool name, a known preset name and how many settings were given. Our host keeps standard server logs.

The PROOF.md skill and this site’s code are under the MIT License. Anything owned by third parties is not covered by that license.

We may update these terms. The date at the top shows the current version, and continued use means you accept it.

The changelog, the updates shown on the page and any list of planned work describe what has shipped and what we are weighing. They are information, not a commitment to build, keep or support anything, and planned items can change or be dropped without notice.