These Terms apply when users (hereinafter "you," "User") download, install, access, or use the EUREKA Wallet (including iOS/Android/Web/Desktop, collectively, the "Software") and its website, APIs, marketplace, and value-added services (collectively, the "Services").
By using the Software/Services, you agree to these Terms and any revisions from time to time, and you acknowledge that you have read the Risk Disclosure & Disclaimer.
EUREKA is a decentralized, non-custodial software tool for self-managed local private keys, helping you manage Bitcoin and rare satoshis (Rare Sats), identify rarity attributes, display valuation information, generate collection certificates, and connect to third-party marketplaces.
EUREKA does not receive/hold user assets and does not provide to anyone any regulated financial services such as custody, exchange, brokerage, matching, return guarantees, wealth management, or lending for fiat or crypto assets.
Any on-chain interactions and use of third-party markets/protocols are your independent choices and conducted directly between you and such third parties. EUREKA bears no responsibility for any act or omission of any third party.
You must be a person with full legal capacity, aged 18 or above, and you warrant that you are not located in, resident of, or otherwise subject to any applicable sanctions list/embargoed jurisdiction.
Certain value-added features (e.g., cross-device sync, notifications, market tools) may require creating an account or authorizing third-party login. You are responsible for your account information, device security, and access control.
If certain future features (e.g., fiat on/off-ramps, merchant settlement, compliance APIs) require identity verification, you agree to complete KYC/AML procedures as required; otherwise, such features may be restricted.
Private keys/mnemonics are generated only on your device and are self-custodied by you. EUREKA does not store, know, or recover them.
You are solely responsible for any loss of assets arising from device loss, damage, theft, malware, phishing, user error, or improper backup.
You may use watch addresses for read-only viewing. Any on-chain transfer requires your local signature.
Rarity attributes are computed based on public blockchain data and heuristic rules and may be subject to deviations due to protocol changes, data source differences, or chain reorganizations.
EUREKA provides no warranty as to the accuracy, completeness, or timeliness of rarity attributes, numbering, valuations, floor prices, or historical trades.
Market quotes and trade data may come from third-party sites/markets/APIs. EUREKA is not responsible for their availability, legality, or accuracy.
Any identification, ranking, scoring, valuation, index, or recommendation does not constitute investment advice or a promise of returns.
Core features are free; future premium features (e.g., advanced certificate templates, professional APIs, commercial licenses) may be charged—see the relevant page/order.
Network miner fees, third-party marketplace fees, and fiat channel fees are charged by the respective network/service providers and are unrelated to the Software.
We may adjust fees and billing methods as needed and announce changes on official channels in advance. Confirmed orders follow the price at the time of order.
You agree not to use the Software/Services for:
Where we reasonably determine any of the above, we may restrict or terminate part or all of the Services to you and cooperate with regulators/judicial authorities as required by law.
Intellectual property in the EUREKA software code (excluding open-source parts), UI design, trademarks/logos, copy, and graphics belongs to Fumiha Co., Ltd. or the respective rights holders.
Subject to these Terms, we grant you a non-exclusive, non-transferable, revocable limited license to use the Software/Services for lawful purposes.
You retain rights to content you upload/submit, but grant us a non-exclusive, worldwide, royalty-free license as necessary to provide the Services.
We collect only data necessary to provide the Services.
Private keys, mnemonics, and transaction signatures are processed locally; logs/analytics are de-identified/aggregated for product improvement.
See our Privacy Policy, which forms an integral part of these Terms.
The Software/Services are provided "as is" and "as available." We make no express or implied warranties of merchantability, fitness for a particular purpose, error-free or uninterrupted operation.
To the maximum extent permitted by law, EUREKA shall not be liable for any indirect, incidental, special, punitive, or consequential damages.
We are not responsible for service interruption or data errors caused by natural disasters, network/power outages, war, policy changes, on-chain congestion or reorganizations, or third-party failures.
You must evaluate and fulfill any tax reporting and payment obligations arising from your use of the Software/Services.
You must ensure your use of the Software/Services is legal and compliant in your jurisdiction; obtain any necessary licenses/approvals yourself.
You warrant not to export or provide the Software/Services to any sanctioned entities/regions.
The Software/Services may contain links to third-party websites, protocols, wallets, markets, or services. Your legal relationship and disputes with such third parties are independent of us. You should assess their security and legality before use.
12.1 You may stop using or uninstall the Software at any time.
12.2 If you violate these Terms or applicable laws, we may suspend, restrict, or terminate part or all of the Services within a reasonable scope.
12.3 Termination does not affect rights, obligations, and liabilities accrued prior to termination.
We may update these Terms due to business or legal changes. Material changes will be notified via the website/in-app notices. Updated Terms take effect upon publication; continued use constitutes acceptance.
14.1 Governing law: These Terms are governed by Japanese law, excluding its conflict-of-law rules.
14.2 Negotiation and arbitration/courts: Disputes should first be resolved through good-faith negotiation; failing which, submit to exclusive jurisdiction of the Tokyo District Court.
14.3 Consumer exceptions: If mandatory consumer protection laws provide otherwise, such provisions shall prevail.
You agree that we may provide legal and business notices via in-app notifications, website announcements, or the email you registered in your account.
Contact: satigold2025@gmail.com
If any provision is held invalid or unenforceable, the remaining provisions remain in full force and effect.
These Terms, together with the Privacy Policy and the Risk Disclosure & Disclaimer, constitute the entire agreement between you and us.
Failure or delay in exercising any right does not constitute a waiver of that right.