Coldstar — App Terms of Use
Effective: June 26, 2026
These Terms of Use (the "Terms") govern your access to and use of the Coldstar mobile application (the "App"), published for the Solana Seeker device on the Solana dApp Store. The App is published by Chainlabs Technologies ("Coldstar," "we," "us," or "our"), a company organized under the laws of the United Kingdom. By downloading, installing, or using the App, you agree to be bound by these Terms. If you do not agree, do not use the App.
The short version: Coldstar is a non-custodial, local-first wallet. You — and only you — control your private keys and your funds. We never hold, can never access, and can never recover your keys. The App is provided "as is," interacting with public blockchains carries real and irreversible financial risk, and you are solely responsible for your transactions.
1. Acceptance of These Terms
These Terms form a binding agreement between you and Coldstar. They apply specifically to the App and are separate from the terms governing the coldstar.dev website and the Coldstar command-line tools. Your use of the App is also subject to the Coldstar Privacy Policy, which is incorporated into these Terms by reference. Where the App and the website differ, these Terms govern the App.
2. Eligibility
You must be at least 16 years old, and of the age of legal majority in your jurisdiction, to use the App. By using the App you represent that you meet these requirements and that you are not barred from using the App under the laws of any applicable jurisdiction. You are responsible for ensuring that your use of the App, and of the Solana network, is lawful where you live.
3. What the App Is
Coldstar is a non-custodial, local-first Solana wallet designed for the Solana Seeker device. It lets you view balances and transaction history, manage wallet addresses, and sign and broadcast transactions to the Solana network. It supports two signing modes:
- Seed Vault mode: signing is performed by the Solana Seeker's hardware-backed secure element through the Mobile Wallet Adapter. Your keys remain inside the device's secure hardware.
- Air-gap (cold) mode: the App displays an unsigned transaction as a QR code, which is signed by your separate, offline ColdStar signing device. Your keys never touch a network-connected device.
The App is a software interface to a public blockchain. It is not a bank, broker, exchange, money-services business, custodian, or financial institution, and it does not hold, transmit, or take custody of your funds.
4. Non-Custodial Wallet — Your Responsibility for Keys
You are solely and exclusively responsible for safeguarding your private keys, seed phrases, recovery secrets, and signing devices. Because the App is non-custodial:
- We never generate, receive, store, back up, or transmit your private keys or seed phrase.
- We cannot access your wallet, reverse a transaction, freeze funds, or act on your behalf.
- If you lose your keys, seed phrase, or signing device, or if they are stolen, your funds may be permanently and irretrievably lost, and we cannot recover them for you.
You are responsible for maintaining your own secure backups and for the security of the device on which the App runs.
5. No Financial, Investment, Legal, or Tax Advice
The App is a tool for self-custody and transacting. Nothing in the App or on coldstar.dev constitutes financial, investment, legal, tax, or other professional advice, or a recommendation to buy, sell, or hold any digital asset. You are solely responsible for your own decisions and for evaluating the risks of any transaction. Consult a qualified professional where appropriate.
6. Acceptable Use
You agree not to use the App to:
- Violate any applicable law, regulation, or sanctions regime, or facilitate any illegal activity, including money laundering, terrorist financing, or fraud;
- Infringe the rights of others or transact in assets you do not have the lawful right to control;
- Interfere with, disrupt, reverse engineer (except to the extent permitted by law), or attempt to gain unauthorized access to the App, its security features, or any connected systems;
- Introduce malware or use the App to harm, defraud, or deceive others.
7. Third-Party Services and Networks
To function, the App interacts with the public Solana network and with third-party infrastructure, including Solana RPC endpoints, the Mobile Wallet Adapter, the Solana dApp Store, and any decentralized applications or smart contracts you choose to interact with. We do not own or control these third parties and are not responsible for their availability, accuracy, security, fees, or conduct. Your use of any third-party service is at your own risk and may be governed by that party's own terms and policies.
8. Blockchain Risks
You acknowledge and accept the inherent risks of using a public blockchain, including but not limited to:
- Irreversibility: transactions broadcast to the Solana network are final and cannot be reversed, cancelled, or refunded by us or by anyone.
- Transparency: the addresses and amounts involved in your transactions are recorded permanently on a public ledger and are visible to anyone.
- Volatility: the value of digital assets can change rapidly and may fall to zero.
- Technical risk: network congestion, forks, outages, bugs, or vulnerabilities in smart contracts, the Solana protocol, or the underlying device may cause loss.
- Regulatory risk: the legal treatment of digital assets is uncertain and may change.
- User error: sending funds to an incorrect address, approving a malicious transaction, or mismanaging keys may result in permanent loss.
You accept full responsibility for these risks and for every transaction you authorize.
9. License to Use the App
Subject to these Terms, Coldstar grants you a limited, personal, non-exclusive, non-transferable, revocable license to install and use the App on a device you own or control, for your own non-commercial use. The App, including its name, branding, design, and software, is protected by intellectual property rights and remains the property of Coldstar and its licensors. Except as expressly permitted here or by an applicable open-source license, you may not copy, modify, distribute, sell, or create derivative works from the App.
10. Disclaimer of Warranties
THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. We do not warrant that the App will be uninterrupted, secure, error-free, or that it will meet your requirements. You use the App at your own risk. Some jurisdictions do not allow the exclusion of certain warranties, so some of the above may not apply to you.
11. Limitation of Liability
TO THE MAXIMUM EXTENT PERMITTED BY LAW, COLDSTAR AND ITS OFFICERS, EMPLOYEES, AND AGENTS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES, OR FOR ANY LOSS OF DIGITAL ASSETS, FUNDS, PROFITS, DATA, OR GOODWILL, ARISING OUT OF OR RELATING TO YOUR USE OF — OR INABILITY TO USE — THE APP, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Because the App is non-custodial and provided free of charge, our aggregate liability to you for any claim relating to the App will not exceed one hundred US dollars (US$100). Nothing in these Terms excludes or limits liability that cannot lawfully be excluded or limited, including liability for death or personal injury caused by negligence or for fraud.
12. Indemnification
You agree to indemnify and hold harmless Coldstar and its officers, employees, and agents from any claims, losses, liabilities, and expenses (including reasonable legal fees) arising out of your use of the App, your violation of these Terms, or your violation of any law or the rights of a third party.
13. Termination
You may stop using the App at any time by uninstalling it. We may suspend or discontinue the App, in whole or in part, at any time. Because the App is non-custodial, uninstalling it does not affect your on-chain assets, which remain accessible through your keys using any compatible wallet. Sections of these Terms that by their nature should survive termination — including those on responsibility for keys, disclaimers, limitation of liability, and indemnification — will survive.
14. Changes to the App and These Terms
We may update the App and these Terms as the product evolves. When we change these Terms, we will post the revised version on this page with an updated effective date, and material changes will be reflected in the App's store listing. Your continued use of the App after changes take effect constitutes acceptance of the revised Terms.
15. Governing Law
These Terms are governed by the laws of England and Wales, United Kingdom, without regard to conflict-of-law principles. The courts of England and Wales will have non-exclusive jurisdiction over any dispute arising out of or relating to these Terms or the App, except where mandatory local consumer-protection law gives you the right to bring proceedings in your own jurisdiction.
16. Severability
If any provision of these Terms is held to be invalid or unenforceable, that provision will be limited or removed to the minimum extent necessary, and the remaining provisions will remain in full force and effect.
17. Contact
If you have questions about these Terms:
- Email: hello@coldstar.dev
- Twitter/X: @buildcoldstar