Cert4Sign is NOT affiliated with or authorized by ZATCA. This is an open-source reference implementation for testing and simulation purposes only. No hosted service is offered, and the runnable source code is in pre-release — this domain hosts documentation only. Watch the GitHub repository for the release.
Get in Touch
Questions about Cert4Sign or ZATCA Phase 2 onboarding? Reach out using the channels below. Note that Cert4Sign is an open-source project; there is no hosted service.
Security & Responsible Disclosure
For security vulnerabilities or responsible disclosure, please contact our security team directly.
security@cert4sign.comReport Abuse
If you believe this domain is being misrepresented or used for unauthorized purposes, please email us with details so we can respond quickly.
support@cert4sign.comSource Code
Cert4Sign is open source. Every line of code that handles your input is publicly auditable.
github.com/hesham-fouda/cert4signDocumentation
Getting started guides, ZATCA compliance flow, field reference, troubleshooting, and FAQ.
github.com/hesham-fouda/cert4sign/wikiBusiness Hours
Sunday - Thursday: 9:00 AM - 6:00 PM (AST)
Friday - Saturday: Weekend