PureStamp by STELR AI brings cryptographic provenance to every generative output — ensuring origin, authorship, and compliance for AI-driven content, documents, and media. Designed for enterprises that demand verifiable trust across regulated workflows.
Cryptographic stamps ensure verifiable authenticity.
"PureStamp ensures our academic credentials are verifiable and trusted worldwide."
Dr. James Lee, University Registrar
"PureStamp’s watermarking protects our editorial content, guaranteeing authenticity."
Laura Bennett, Managing Editor
"PureStamp’s audit-ready stamps streamline our legal document workflows."
Michael Patel, Compliance Officer
Cryptographic stamps bind content to its creator, ensuring tamper-evident proof of origin.
Supports EU AI Act, SOC 2, and chain-of-custody requirements with auditable metadata.
Works with AWS S3, Lambda, and other platforms for seamless watermarking in your workflows.
/purestamp/stamp endpoint or integrate with S3 for automatic watermarking.
curl -X POST "https://api.stelrai.com/purestamp/stamp" \
-H "x-api-key: <your-api-key>" \
-H "Content-Type: application/json" \
-d '{"content":"Your document here","creator":"alice@school.edu"}'
Response includes stamp and receipt for verification.
Full API DocumentationPureStamp delivers tamper-evident stamps with metadata for instant verification and auditability.
{
"status": "verified",
"who": "alice@school.edu",
"signature_valid": true,
"receipt_id": "stmp_01H8X9A2Y6B7C8D9E0F",
"timestamp": "2025-09-15T12:28:00Z"
}
PureStamp ensures your content meets the highest regulatory standards with cryptographic, auditable stamps.
Join thousands of organizations trusting PureStamp to secure their content. Start now with our free demo or API key.