Sold by: STELR AI
Deployed on AWS
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Cryptographic watermarking engine to prove content authenticity, ensure compliance, and prevent tampering across education, publishing, and regulated AI content workflows.
Overview
PureStamp by STELR AI - Cryptographic Watermarking for Trusted Content
PureStamp is a tamper-evident watermarking system that cryptographically binds content to its creator, ensuring provenance, integrity, and auditability across AI-generated and human-authored content.
Built on AWS-native infrastructure, PureStamp seamlessly integrates into your content generation workflows using APIs, S3 triggers, or Lambda. Whether you are publishing educational material, legal documents, or enterprise AI content, PureStamp guarantees verifiable authenticity and supports regulatory compliance.
Key Capabilities
- Cryptographic Watermarking: Applies invisible stamps at content creation to bind authorship and time of origin.
- Instant Verification: Verify authenticity via API or S3 triggers using embedded metadata and tamper-proof receipts.
- AWS Native Integration: Supports S3, Lambda, and step functions for automated, scalable deployment.
- Regulatory Support: Built for compliance with the EU AI Act, SOC 2, internal audits, and academic integrity standards.
- Lightweight & Fast: Designed for real-time systems and high-throughput pipelines with low latency.
Who It Is For
- Content platforms needing AI authenticity proof
- Academic institutions and publishers enforcing originality
- Enterprises under AI governance, legal, or regulatory mandates
PureStamp provides the cryptographic trust layer for your content. Ensure every document, message, or model output is verifiably real.
Highlights
- Cryptographic Watermarking: Tamper-evident stamps ensure content authenticity, authorship traceability, and compliance with AI regulations.
- Real-Time S3 and API Integration: Embed watermarking directly into your content pipeline using AWS-native triggers or a simple API.
- Compliance-Ready for Regulated Use Cases: Supports EU AI Act, academic integrity, SOC 2, and chain-of-custody requirements for publishing, education, and enterprise content.
Details
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Pricing
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Try this product free according to the free trial terms set by the vendor.
Pricing is based on actual usage, with charges varying according to how much you consume. Subscriptions have no end date and may be canceled any time.
Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator to estimate your infrastructure costs.
Dimension | Description | Cost/unit |
|---|---|---|
WatermarksIssued | Number of times the watermark issue API is called | $0.015 |
Verification API Calls | Number of times the watermark verification API is called | $0.015 |
Dimensions summary
PureStamp charges by usage across two independent metrics. You pay per call to the watermark issue API, counted as WatermarksIssued units. You separately pay per call to the watermark verification API, counted as Verification API Calls units. These two dimensions are not tiers and do not depend on each other. Each is billed on its own count. Signing runs on AWS KMS, so issuing a watermark and verifying one later are distinct actions with distinct charges. Your total cost scales with how often you call each API.
Top-of-mind questions for buyers
One WatermarksIssued unit is a single call to the issue API, which signs one AI-generated output at creation. One Verification API Call is a single call to the verify API, which confirms an artifact's origin and integrity. Each API call counts as one unit, regardless of the content size.
It depends on your workflow. Signing every AI output raises WatermarksIssued counts. Frequent audits or on-demand checks raise Verification API Calls. Both meters bill independently and appear together. If you verify each artifact many times after signing it once, verification calls can outweigh issue calls.
Yes. Issuing a watermark and verifying one are separate billable actions. Signing an output charges one WatermarksIssued unit. Each later verification of that same artifact charges one Verification API Call. Verifying the same artifact multiple times adds a verification charge each time.
stelrai.com
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Vendor refund policy
STELR AI does not offer automatic refunds for usage-based charges. Refunds may be considered on a case-by-case basis for billing errors or technical issues. Requests must be submitted within 14 days of the charge.
Contact: support@stelrai.com
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