When your agent calls an API, sends a message, or makes a critical decision, you need more than logs. You need evidence a third party can verify.
Or start a 14-day Pro trial (5,000 proofs/month, no charge until day 15)
EU AI Act: high-risk obligations apply from 2 December 2027. High-risk AI systems will have to log events automatically (Art. 12), and deployers keep those logs for at least six months (Art. 26). Build your Article 12 audit trail before the deadline →
No credit card. Instant key. 30 seconds.
500 proofs/month. Need more? Pro gives you 5,000 with opt-in overage.
14 days free. No charge until day 15. Cancel anytime.
All plans generate identical proofs. Higher plans add volume and a lower overage rate.
Need higher volume?
Enterprise (50K proofs, 149€/mo) and Platform (500K proofs, 599€/mo) plans available.
Looking for the EU AI Act scanner? See scanner pricing →
Each proof is signed with ArkForge's key, then timestamped and logged by two parties independent of ArkForge. Here is an example.
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Call POST /trust/v1/proxy with your target API. ArkForge forwards it and creates the proof.
Each proof has a public URL. The RFC 3161 timestamp and the Sigstore Rekor log entry can be verified independently; the Ed25519 signature relies on ArkForge's key.
A proof is a cryptographic receipt for an API call. It records what was sent, what was returned, and when — signed by ArkForge, timestamped by an independent authority, and logged in a public transparency ledger.
No. The Free plan is commitment-free. Pro and Enterprise are monthly subscriptions, cancellable at any time. Overage billing is strictly opt-in with a configurable cap (5–100 EUR).
By default, requests beyond the quota are rejected with HTTP 429. If you enable opt-in overage, additional proofs are billed at 0.01 EUR/proof (Pro) or 0.005 EUR/proof (Enterprise), up to your configured cap.
Yes, start your 14-day free trial to activate your subscription.
Every proof includes a SHA-256 fingerprint and three output formats: JSON API response, HTTP headers, and a public HTML verification page. All plans include an Ed25519 signature by ArkForge, plus an RFC 3161 timestamp and a Sigstore Rekor entry on the batch root, both independent of ArkForge.
The cryptographic content is identical. Pro offers 10× more proofs per month (5,000 vs 500) and access to opt-in overage. Enterprise offers 100× the volume and a lower overage rate (0.005 EUR/proof).
All plans use RFC 3161 timestamps issued by FreeTSA, DigiCert or Sectigo (DigiCert and Sectigo are WebTrust-audited, FreeTSA is not). These timestamps carry evidential weight in many jurisdictions. They do not constitute a qualified electronic timestamp under eIDAS Regulation (Article 42). For use in formal legal proceedings, consult a qualified lawyer. Contact us for a use-case assessment.
Every agent call gets a proof a third party can check. 500 proofs/month free. No credit card.
Pro trial: 14 days free, no charge until day 15, cancel anytime.
EU AI Act: high-risk obligations apply from 2 December 2027, build your compliance audit trail before the mandate hits.