Terms of Service
Last updated: May 17, 2026 · Governing law: Brazil
1. Acceptance
These Terms govern your use of SEIF protocol services operated by André Cunha Antero de Carvalho, MEI, inscrito no CPF 108.150.687-35, at Rua Jaime Gomes, 638, Araguari - MG, CEP 38440-244, Brasil. By using seifprotocol.com, api.seifprotocol.com, or any related subdomain, you agree to these Terms.
The open SEIF protocol specification and MIT-licensed packages are governed separately by their own licenses.
2. Account and security
Pro/Enterprise require an account with accurate info. You are responsible for API keys and signing keys. Notify [email protected] of unauthorized use. We may suspend accounts for breach, non-payment (after 7-day grace), or law violation.
3. License grant
Limited, non-exclusive, non-transferable, revocable license to use Services for internal business or personal use during your subscription term. We retain all IP rights.
4. Acceptable use
You agree not to: violate applicable law (Marco Civil, LGPD); bypass quotas/auth; reverse-engineer proprietary components; resell without consent; distribute malware/DoS; submit third-party personal data without lawful basis.
5. Subscriptions and payment
Payment via a Merchant of Record (payment processor TBD; the MoR handles taxes). Auto-renewing unless cancelled. Cancel anytime via the processor portal or [email protected]. Refunds per our Refund Policy.
6. Your content
You retain all IP in content submitted for signing. You grant us license to: process for signature generation; store canonical hash in transparency log; make signature metadata accessible via Evidence URL. Original content NOT persisted by default.
7. CONFIDENTIAL classification
CONFIDENTIAL artifacts get elevated controls: no content metadata in public log, authenticated retrieval only, reduced public verify URL. We will not access CONFIDENTIAL content except to provide Services or as required by law.
8. Disclaimer
SERVICES PROVIDED "AS IS" WITHOUT WARRANTIES. Cryptographic chain remains independently verifiable via OpenTimestamps even if hosted service becomes unavailable.
9. Limitation of liability
Aggregate liability limited to greater of (a) fees paid in preceding 12 months or (b) $100 USD. No liability for indirect/consequential damages. Brazilian consumer law (CDC 8.078/1990) exceptions apply where applicable.
10. Termination
You may terminate anytime. Existing signatures/Evidence URLs remain accessible per tier retention. Export available for 30 days post-termination.
11. Governing law
Laws of Brazil (Código Civil 10.406/2002, Marco Civil 12.965/2014, LGPD 13.709/2018). Exclusive jurisdiction: Comarca de Araguari - Estado de Minas Gerais.
12. Changes
Material changes notified via email. Continued use = acceptance.