Every day, billions of legitimate calls go unanswered.
Spam, spoofing, and AI fraud made "probably spam" the default. Provenant fixes that at the root: cryptographic proof of who's calling that travels with every call, across any border.
Not a better guess. Proof.
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Identity verified legal entity
Authority authorised to use this number
Provenance unbroken chain of custody
Why nothing has worked
We carry the proof all the way through.
Every fix so far treats the symptom. Spam filters, reputation scores, and branded caller ID all guess at who's calling, then block what looks bad. None can prove who's real, so none brought trust back.
The band-aid
- ✗ Spam filters guess from patterns, then block.
- ✗ Reputation scores rank likelihood, never truth.
- ✗ Branded caller ID dresses up an unproven claim.
The cure
- ✓ The verified truth about who's calling is established the moment a business is vetted.
- ✓ Today it dies at the first handoff, so everyone downstream falls back to a guess.
- ✓ Carry that truth all the way through, and the phone works again.
What we built
We invented a way to prove who's really calling.
We invented the model, built it, and Microsoft runs it in production today. The vetter establishes who's real. The network already carries the call. Provenant invented the way it's proven: written into the call and checked independently, so anyone along the way can verify it.
Identity
Who is communicating. A verified legal entity, bound to brand and number rights.
Authority
What they're allowed to do. Delegated, scoped, and revocable in real time.
Provenance
Where the proof came from. An unbroken, auditable chain of custody.
How the model works: proof rides the traffic you already have
Each party writes proof into its own traffic and reads it independently. Nothing routes through a central store. The proof travels with the call.
Not a vetter. Not a score. Not a pipe your calls run through. The method that makes verified truth provable, open for anyone to build on.
How it composes
It makes what you already run stronger.
Deterministic, not probabilistic
Proof of legitimate origin. Fuel for the analytics engines you already run.
No rip-and-replace
Rides the fields and endpoints you already use, and reuses your existing credentials and documents.
Cross-channel, cross-border
Vet once, carry the proof across voice, SMS, RCS, and AI agents.
Private by design
Reveal only what's needed, with selective disclosure that stays fully verifiable.
Nothing routes through Provenant. We're the layer that makes proof possible, not a hop your traffic passes through.
The customer
Microsoft runs on Provenant.
Provenant invented the Open Verifiable Communications (OVC) framework and built its reference implementation. The service has been live with Microsoft since April 2026, proving Microsoft owns the number, is the legal entity behind the call, and has the right to the brand it displays.
Originated as a GSMA Foundry project, showcased at MWC 2026.
“It’s a business need that we had to solve, and we’ve been able to demonstrate the technology to do that with Provenant.” Peter Nilsson, Principal Engineering Leader, Microsoft (Commercial Engineering & AI)
Gate 1: Delivered ✓ done
Regulatory: the call can legally reach the phone.
Gate 2: Answered next
Consumer trust: branded calling to lift answer rates.
Source: Microsoft Inside Track, “Advancing trusted calls with Open Verifiable Calling at Microsoft,” June 18, 2026. Microsoft’s term for OVC.
The ecosystem
The layer the ecosystem builds on.
We don't compete with vetters, carriers, or analytics. We build the rails they ride on.
Member of
Reference implementation for GSMA Open Verifiable Communications.
Working with: vetters, carriers, CPaaS, analytics, and standards bodies.
The team
Built by the people who wrote the standards.
Founder
Randy Warshaw
Founded Provenant and invented the model. Founded Kontxt at RealNetworks; three decades in telecom trust.
Protocols
Sam Smith
Invented the core open protocols it's built on, now written into Utah law.
Architecture
Daniel Hardman
Architected the model and authored the specs behind it, including the Verifiable Voice Protocol.
Authentic digital communication
The proof is already in the call.
Microsoft is in production. GSMA is standardizing it. If verified caller identity belongs in your stack, let's talk about what a pilot looks like.