Chargeback defense for the way you sell.
Done-for-you Stripe dispute defense tuned to your business — e-commerce, SaaS, course creators, marketplaces. You pay 15% only when we win. The same cryptographic stack also signs AI output for compliance teams.
Built for how you sell
Four Stripe apps installable from the Marketplace in under a minute. Bundle pricing applies automatically when you install more than one.
E-commerce
Chargeback defense and pre-dispute evidence on every order
Course Creators
Win the "I never got the course" chargeback
SaaS
Subscription chargeback defense and failed payment recovery
Marketplaces
Multi-sided platform dispute defense at scale
Also: sign AI output
The same CertNode API applied to AI output. If you need to sign AI output for EU AI Act Article 50 or FRE 902 framing, these are the buyer angles. Compliance-grade, not creator-grade.
AI Accountability
Sign AI agent actions and model outputs cryptographically
AI Agents
Cryptographic receipts for autonomous agent actions
Agentic Commerce
Evidence for agent-initiated purchases and disputes
Content Platforms
AI provenance for compliance and audit
Training Data
Sign content before AI trains on it
One proof engine underneath all of it
ES256 JWS signatures + RFC 3161 timestamps from an independent TSA + optional Bitcoin anchoring via OpenTimestamps. Every vertical here is the same CertNode API applied to a different moment — Reflex evidence packages, Vault receipts, and AI output all run on it. Verifiable by anyone, no account required.
How the stack works →Start defending disputes today.
Installs in under a minute. No monthly fee — you only pay when we win a dispute.