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Terms of Service

Last Updated: June 13, 2026

Note (June 13, 2026): The Encryption Keys clause (§2) was revised for accuracy — keys are derived from our master secret (server-side), not client-side, and we can restore access while the Service operates.

Welcome to eqr.link ("Service"), a platform that enables users to create permanent, blockchain-anchored QR codes and dynamic redirect links. These Terms of Service ("Terms") govern your access to and use of the Service provided by Piaxonika Software Services SINGLE MEMBER S.A., company number 179072201000, registered office: 3is Septemvriou 144, 112 51 Athens, Greece ("Company", "we", "us", or "our").

By registering an account, purchasing a subscription or balance, or using the Service, you agree to be bound by these Terms. If you do not agree, you must not use the Service.

1. Description of Service

The Service provides web-based tools and an edge routing network to generate QR codes and configure dynamic redirect links.

  • Blockchain Anchoring: Dynamic redirect configurations and cryptographic metadata are anchored to the public, decentralized Base Layer 2 (L2) blockchain.
  • Permanence: Once a QR code and redirect configuration are written to the blockchain, they are immutable and permanently recorded on the blockchain.
  • No Custody / Financial Claims: The Service does not provide custody of cryptographic assets, does not execute financial transactions other than payment for the Service, and does not provide investment or financial advice.

2. User Accounts and Content

  • Eligibility: You must be at least 18 years old to create an account.
  • Account Credentials: You access the Service using Google Sign-In or magic links. You are responsible for maintaining the confidentiality of your account access.
  • Destination URLs: You have the ability to configure destination URLs for your QR codes. You retain ownership of and are solely responsible for any destination URLs and content you link to.
  • Encryption Keys: Your destination URLs are encrypted with a per-user key that we derive from our master secret, so we can restore your access while the Service operates. You may also export this recovery key to decrypt your destinations independently of us — for example, directly from the public blockchain record. We recommend exporting and safely storing it so your destinations remain recoverable even if the Service is discontinued.

3. Third-Party Websites and Content

  • Lack of Control: The Service redirects scanners to third-party destination websites. We do not control, inspect, audit, or endorse those third-party websites or their content.
  • Disclaimer of Liability: We are not responsible or liable for any content, advertising, products, services, malware, or other materials present on or available from third-party websites. Users scan QR codes and access destination websites at their own risk.

4. Prohibited Uses and Right to Suspend

To protect the integrity of the Service, we enforce a strict policy against malicious activity.

  • Prohibited Conduct: You must not configure redirect links to point to websites that engage in:
    • Phishing, social engineering, or credential harvesting.
    • Distribution of malware, spyware, viruses, or other harmful code.
    • Financial fraud, scams, or deceptive practices.
    • Impersonation of individuals, brands, or entities.
    • Spamming or bulk unsolicited messaging.
    • "Wallet-draining" scripts, smart contract exploits, or unauthorized crypto-asset authorization requests.
    • Any illegal activity or violation of applicable laws.
  • Right to Suspend: We reserve the right, in our sole discretion and without prior notice, to immediately suspend, block, or delete any redirect link, QR code access, or user account that we determine violates these Terms or is associated with abusive or harmful behavior.
  • Abuse Reporting: Suspected violations or abusive redirect links can be reported to abuse@eqr.link.

5. Blockchain Anchoring and Immutability

  • On-Chain Transactions: Creating or upgrading a QR code to a dynamic QR code triggers a transaction on the Base L2 blockchain.
  • Immutability Disclaimer: You acknowledge and agree that transactions written to the Base L2 blockchain are public and completely immutable. The Company cannot delete, modify, or revoke records that have been anchored to the blockchain. We are not responsible for any issues arising from blockchain network congestion, forks, failures, or errors in the underlying Base L2 blockchain protocols.
  • Gas Fees: The cost of the gas fee for on-chain anchoring is included in your subscription or balance fee.

6. Fees, Billing, and Balance Top-Ups

  • Subscriptions and Add-ons: Certain features of the Service are billed on a subscription basis or as one-time add-on purchases.
  • Balance Top-Ups:
    • You may top up your account balance to make purchases.
    • The minimum top-up amount is $5.00 per session.
    • The maximum top-up amount is capped at $500.00 per session.
  • Stripe Processing: All payments are processed securely via Stripe. You agree to provide accurate billing details and authorize Stripe to charge your designated payment method.

7. Disclaimer of Warranties

THE SERVICE IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS. WE DISCLAIM ALL WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, SECURE, TIMELY, OR ERROR-FREE, OR THAT THE BASE L2 BLOCKCHAIN NETWORK WILL BE CONTINUOUSLY OPERATIONAL.

8. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL THE COMPANY, ITS DIRECTORS, EMPLOYEES, OR AGENTS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING WITHOUT LIMITATION LOSS OF PROFITS, DATA, USE, GOODWILL, OR OTHER INTANGIBLE LOSSES, ARISING OUT OF OR IN CONNECTION WITH:

  1. YOUR USE OF OR INABILITY TO USE THE SERVICE.
  2. ANY ACTIONS TAKEN BY THE COMPANY TO SUSPEND OR BLOCK MALICIOUS REDIRECTS.
  3. THE PERMANENT OR IMMUTABLE NATURE OF DATA ANCHORED TO THE BASE L2 BLOCKCHAIN.
  4. ANY ACCIDENT, LOSS, OR DAMAGE ARISING FROM SCANNERS ACCESSING THIRD-PARTY SITES.

IN NO EVENT SHALL OUR TOTAL LIABILITY EXCEED THE GREATER OF $50.00 OR THE AMOUNT YOU PAID TO THE COMPANY IN THE PAST 6 months.

9. Governing Law and Jurisdiction

These Terms shall be governed by and construed in accordance with the laws of Greece, without regard to its conflict of law provisions. Any legal action or proceeding arising under these Terms shall be brought exclusively in the courts located in Athens, Greece.

10. Contact Us

For questions regarding these Terms, please contact us at support@eqr.link.

eqr.link

Eternal QR codes — backend-controlled routing, per-user encryption, blockchain-backed survivability.

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