Open-core pricing

Verification is free, forever.

Verifying a result should be a public good, so it always will be. You pay only when you need a production signing identity or to embed the engine commercially.

Verify
Free · forever
Confirm any Obsign receipt, on any device.
  • The client-side verifier
  • Integrity + Ed25519 + issuer trust
  • Bind an 8-bit original
  • No account, nothing uploaded
Open the verifier
Evaluate
Free
The full SDK, locally, for evaluation and research.
  • SDK + CLI + native core
  • Provable compute + forensic engine
  • Development signing keys
  • Non-commercial use
Read the docs
Production Talk to us
Custom
A real signing identity your customers can trust.
  • Production cert on the C2PA trust list
  • KMS / HSM key custody
  • Hosted, witnessed transparency log
  • Commercial license + support
Become a design partner
Embed / OEM Talk to us
Custom
Ship the provable layer inside your product.
  • OFX plugin + SDK embedding
  • Bring any model (Tier A–C)
  • C2PA-aligned receipt export
  • Co-engineering
Talk to us

Honest note: Obsign is pre-launch. There is no self-serve checkout yet — the paid tiers begin as design partnerships while we validate the standard with the first customers. The free tiers are real and usable today: pip install obsign, then obsign selfcheck.

Questions

Why is verification free?
Because trust infrastructure only works if anyone can check it without permission. A verifier you have to pay for isn't a public good; capture-provenance is commoditizing and verification should be too.
What exactly do I pay for?
The thing that's genuinely hard and genuinely valuable: a production signing identity (a CA cert on the C2PA trust list with proper key custody) and the right to embed the engine commercially. The compute is open; the trusted identity is the product.
Can I bring my own model?
Yes. Tier A (bit-exact integer) is the flagship, but any model wraps in an accountable, reproducible receipt (Tier B/C). The provable layer sits over any architecture.
Is there a public price?
Not yet, and we won't fake one. Early customers are design partners; pricing firms up as the production trust path and the first deployments are validated.