All CertNode Products

Done-for-you chargeback defense. Pay 15% only when we win — plus AI Provenance on the same stack.

Every product signs records using ES256 + RFC 3161 + Bitcoin anchor. How the stack works →

Chargeback defense

Reflex

Published

AI chargeback defense

Gathers evidence, writes the AI defense narrative, submits to Stripe in 60 seconds. Multi-platform: Stripe, Shopify, PayPal, Square, WooCommerce.

15% on wins

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Evidence Vault

Published

Pre-dispute proof at payment time

Captures 3DS, AVS, CVC, device fingerprint, and IP on every payment with RFC 3161 timestamps. Feeds straight into Reflex defense packages.

$0.03/txn ($0.02 bundle)

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Sentinel

Published

Refund abuse network

Cross-merchant abuse scoring on every refund request. Per-card history, IP signals, Vault auth signals when bundled.

$49/mo ($39 bundle)

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Also on the same stack

AI Provenance

Live

Cryptographic provenance for AI output

Sign Claude, OpenAI, Mistral, or any model output with three-layer timestamps. Multi-model neutral. Built for EU AI Act Article 50 and self-authentication under FRE 902(13)/(14).

100/mo free, then $0.01/sig

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Installs in under a minute. No monthly fee — you only pay when we win a dispute.

Install on Stripe Sign AI Output