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Terms of Service

Last updated: March 17, 2026

These Terms of Service ("Terms") govern your access to and use of the QuantumShield L2 blockchain network and related services (the "Service") operated by KOREA ADVANCED MATERIALS Co., Ltd ("we," "us," or "the Company"). By accessing or using the Service, you agree to these Terms.

1. Service Description

QuantumShield L2 is an Ethereum Layer 2 blockchain infrastructure that integrates post-quantum cryptographic signatures (ML-DSA-65/87, NIST FIPS 204) into the execution layer. The Service includes the blockchain network, web wallet, dApp dashboard, testnet faucet, and block explorer.

Testnet Status: The Service is currently operating as a testnet. Testnet tokens (ETH on Chain ID 42069) have no monetary value. The network may be reset, upgraded, or discontinued at any time without notice.

2. Eligibility

You must be at least 18 years of age to use the Service. By using the Service, you represent that you meet this requirement and have the legal capacity to enter into these Terms.

3. No Custody

We do not have custody of, or control over, your private keys, cryptographic key pairs (including ML-DSA-65 keys), or digital assets. You are solely responsible for the security and management of your private keys and wallet credentials. Loss of private keys may result in permanent loss of access to your accounts.

4. Acceptable Use

You agree not to:

5. Blockchain Immutability

Transactions confirmed on QuantumShield L2 are irreversible. We cannot reverse, cancel, or modify confirmed transactions. All on-chain data is permanent and publicly visible. You acknowledge and accept these characteristics of blockchain technology.

6. Intellectual Property

The QuantumShield brand, logo, website content, and proprietary software are owned by KOREA ADVANCED MATERIALS Co., Ltd. Open-source components are governed by their respective licenses.

7. Disclaimer of Warranties

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED. We do not warrant that the Service will be uninterrupted, error-free, or secure. Post-quantum cryptographic algorithms are implemented based on current NIST standards and are widely regarded as quantum-resistant under present knowledge; however, no absolute security guarantee is made.

8. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, the Company shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including but not limited to loss of digital assets, data, or profits, arising from your use of the Service. Our total liability shall not exceed the amount you paid to us (if any) in the 12 months preceding the claim.

9. Experimental Technology

The Service incorporates experimental post-quantum cryptographic technology. While based on NIST-standardized algorithms (FIPS 204), the integration of PQC into blockchain infrastructure is novel. You acknowledge the experimental nature of the technology and accept the associated risks.

10. Modifications

We reserve the right to modify these Terms at any time. Changes become effective upon posting to this page. Your continued use of the Service after changes constitutes acceptance of the modified Terms.

11. Governing Law

These Terms shall be governed by and construed in accordance with the laws of the Republic of Korea. Any disputes arising from these Terms shall be subject to the exclusive jurisdiction of the courts of Gwangju, Republic of Korea.

12. Severability

If any provision of these Terms is held invalid or unenforceable, the remaining provisions shall continue in full force and effect.

13. Contact

KOREA ADVANCED MATERIALS Co., Ltd
345 Cheomdangwagi-ro, Buk-gu, Gwangju, Republic of Korea