CertNode products
Four Stripe apps and one developer API, all built on the same CertNode proof engine.
Reflex
Automated dispute defense for Stripe. Gathers evidence, writes the defense narrative, and submits to Stripe — you pay 15% only when a dispute is won.
Evidence Vault
Captures 3D Secure, AVS, CVC, device, and IP on every payment and seals each one with an RFC 3161 timestamp before any dispute exists.
Recover
Failed-payment dunning for Stripe — decline-code-specific emails plus hosted card-update pages, so Stripe can recharge before a failure becomes a chargeback.
Sentinel
Cross-merchant refund-abuse detection — a network signal that flags serial refund abusers before they cost you.
CertNode API
The proof engine, sold directly. Sign critical events — AI outputs, agent actions, documents, transactions — into receipts anyone can verify offline.
Enterprise
Custom integrations, volume pricing, and hands-on onboarding for high-volume merchants.
Getting started
For Reflex (Stripe app)
- 1. Install Reflex from the Stripe App Marketplace
- 2. Activate autopilot — you only pay 15% on a won dispute
- 3. Done — Reflex monitors and defends automatically
For the CertNode API
- 1. Sign up at certnode.io
- 2. Get your API key from the dashboard
- 3. Follow the quickstart guide to create your first receipt
Documentation
Guides & resources
Guides, templates, comparisons, and reason-code references for winning disputes.
View resources →SDKs & libraries
Official client libraries for Node.js and Python, plus a standalone verify package — all with TypeScript types.
View SDKs →Frequently asked questions
What is CertNode?
CertNode is a cryptographic proof engine: it mints independent, verifiable receipts for events that get challenged later. The Stripe apps (Reflex, Vault, Recover, Sentinel) and the CertNode API are all built on it.
What products does CertNode offer?
Four Stripe apps — Reflex (automated dispute defense), Evidence Vault (evidence sealed at payment time), Recover (failed-payment dunning), and Sentinel (cross-merchant refund-abuse detection) — plus the CertNode API for signing and verifying receipts directly.
Is my data secure?
Yes. CertNode encrypts data at rest and uses TLS in transit, runs on SOC 2-certified infrastructure providers (Supabase, Vercel, AWS), and never stores payment card data.
Do I need technical knowledge?
For the Stripe apps, no — they install in one click from the Stripe App Marketplace. For the CertNode API, basic development knowledge helps, and we provide documentation and SDKs.
What platforms do you support?
Reflex is live on Stripe, with Shopify, PayPal, Square, and WooCommerce in beta. The CertNode API works with any platform — anything you can hash and sign.
Can I cancel anytime?
Yes. There are no long-term contracts. Reflex has no monthly fee at all — you only pay when a dispute is won.
Contact support
Email support
- General:
support@certnode.io - Technical:
app@certnode.io - Billing:
billing@certnode.io - Sales:
sales@certnode.io
Response time
We aim to reply to support email within 1–2 business days.