1. Provider and contract

These terms form the contract for use of Invisible Marks and Trace between you and Neuron4 Tech SL, tax ID B67284083, registered at C/ Rosa 28, 08737 Plana de les Torres, Barcelona, Spain (“Neuron4”, “we”). Contact: info@invisible-marks.com. By expressly accepting these terms when registering or before marking a file, you confirm that you have had the opportunity to read, save and reproduce them. The Privacy Notice and, for paid plans, the Refund and Cancellation Policy form part of this contract.

2. Eligibility and authority

You must be at least 18 years old and legally able to enter into a contract. If you use Trace for an organisation, you confirm that you have authority to bind it. Consumers retain all mandatory rights applicable in their country of residence.

3. Service

Trace inserts a signal associated with an identifier and optional password chosen by you, and checks whether that known combination is present in a supplied file. It does not discover an unknown identifier. Insertion and direct verification process files and marking passwords locally in the browser. Pro and Studio users may optionally create a shareable verification link after a positive passwordless verification; the evidence and case metadata are encrypted in the browser, retained by us in encrypted form for up to 7 days and decrypted in the recipient's browser using the key contained in the complete link. Anyone with that bearer link can access the evidence, so you are responsible for sharing it securely and having authority to disclose its contents and any personal data. Output format, metadata, annotations, links, codecs or other file characteristics may change as disclosed in the interface.

4. Essential technical limitations

Trace is a watermarking aid, not DRM, access control, surveillance, leak prevention or a forensic certification service. A mark may be weakened or removed by editing, compression, cropping, rasterisation, recording, printing, scanning or other transformations. Detection depends on the file, browser, codec and transformation and is not guaranteed. A positive or negative result must not be treated by itself as conclusive evidence of authorship, identity, wrongdoing or legal liability. Preserve originals, records and independent evidence where a decision may affect another person.

5. Licence and intellectual property

Subject to these terms, we grant you a limited, non-exclusive, non-transferable and revocable right to use Trace for your own lawful personal or business purposes during the applicable plan. Neuron4 and its licensors retain all rights in the service, software, design, algorithms, brands and documentation. You may not circumvent quotas or security, extract or republish non-public source code, interfere with the service, provide unauthorised access, or use it to build a competing service, except where applicable law expressly permits otherwise.

6. Your files and permitted use

You retain all rights in your files. You confirm that you own them or have sufficient permission to process, mark and distribute them. You must not use Trace to infringe intellectual property, privacy, image, confidentiality or other rights; unlawfully track, deceive, harass or discriminate; process illegal content; distribute malware; evade security; or breach law or contract. You are responsible for the identifier you choose, the recipients to whom you send files and the lawful basis for any personal data included in that identifier.

7. Accounts and security

Information supplied must be accurate. You are responsible for protecting credentials and marking passwords and for activity under your account, except where caused by us. Notify us promptly of suspected unauthorised access. Accounts and quotas may not be shared or resold without written permission. We may apply proportionate rate limits or suspend access where reasonably necessary to address abuse, fraud, security risk or a material breach, and will provide notice and an opportunity to remedy where appropriate.

8. Free access, plans and quotas

Anonymous and Free allowances and paid-plan quotas are shown on the pricing page and in the interface. Anonymous limits may be enforced using a cookie and pseudonymous IP hash. Verification is free and does not consume marking quota unless clearly stated otherwise. Monthly quotas reset at the start of each calendar month and do not roll over. Active reservations may temporarily count against quota. We may change free allowances prospectively, but changes do not remove paid entitlements already acquired.

9. Payments, renewal and taxes

Paid plans are monthly or annual subscriptions that renew automatically until cancelled. Before purchase, Paddle displays the price, currency, taxes, billing period and renewal frequency. Paddle is the Merchant of Record, seller of record for the transaction, and issuer of the receipt or invoice. You authorise recurring charges according to the selected plan. Failed, reversed or fraudulent payments may result in the plan returning to Free.

10. Cancellation, withdrawal and refunds

You may cancel at any time through the customer portal; cancellation normally takes effect at the end of the paid period. Refund requests and the 14-day policy are described in the Refund and Cancellation Policy. Nothing in these terms restricts mandatory withdrawal, conformity, refund or other consumer rights. Where the law requires separate consent to immediate performance or acknowledgement concerning withdrawal, it will be requested during checkout.

11. Availability, maintenance and changes

We aim to provide the service with reasonable care and skill but do not promise uninterrupted or error-free availability. We may perform maintenance, correct security issues and update methods, formats or compatibility. We will not intentionally make a paid service materially worse during a paid period without a valid reason and reasonable notice. Where a change materially and negatively affects a consumer’s access or use beyond what is necessary for conformity or security, applicable statutory remedies remain available.

12. Consumer conformity and warranties

If you are a consumer, Trace will be supplied in conformity with the contract and mandatory law governing digital services. These terms do not exclude statutory guarantees, updates or remedies. Otherwise, and only to the extent permitted by law, no additional implied warranty is given that every mark will survive every transformation, that every detection will be accurate, or that the service is suitable for a particular evidentiary, compliance or security purpose not expressly agreed by us in writing.

13. Liability

Nothing excludes or limits liability that cannot lawfully be excluded, including liability for fraud, wilful misconduct, gross negligence, death or personal injury caused by negligence, or mandatory consumer rights. We remain liable for reasonably foreseeable loss caused by our breach under applicable law.

If you act in the course of business, to the extent permitted by law: neither party is liable for indirect or consequential loss, loss of profit, revenue, business, opportunity or anticipated savings; and Neuron4’s aggregate contractual liability in any twelve-month period is limited to the greater of the amount you paid for Trace during that period or EUR 100. This cap does not apply to the liabilities expressly excluded from limitation above, infringement caused by Neuron4, or breach of confidentiality or data-protection duties.

You are responsible for decisions made from Trace results and should obtain independent verification before alleging misconduct or taking legal, employment, financial or other significant action.

14. Suspension and termination

You may stop using the Free service at any time and cancel paid subscriptions as stated above. We may terminate or suspend for a serious or repeated breach, unlawful use, non-payment, security necessity or where continuing the service becomes unlawful. Where reasonable, we will give notice and allow a remedy. Termination does not affect accrued rights, mandatory refunds, or provisions intended to survive, including intellectual property, liability and dispute clauses.

15. Governing law and disputes

Spanish law governs this contract. If you are a consumer, this choice does not deprive you of mandatory protection in your country of residence, and proceedings may be brought before the courts legally competent for the consumer. Business users submit to the courts of Barcelona, Spain, unless mandatory law requires otherwise. Please contact us first at info@invisible-marks.com so we can attempt to resolve the matter.

16. Changes, severability and records

We may update these terms for legal, security, technical or service reasons. Material changes will be notified reasonably in advance where required and may require renewed acceptance; they will not apply retroactively to completed transactions. If a provision is invalid, the remainder continues in effect. We retain an electronic record of the accepted document versions, their cryptographic hashes, acceptance time and pseudonymous technical evidence as described in the Privacy Notice.