Per output your AI produces, you get a proof anyone can check. Same shape for people. Same shape for devices.
Solving tomorrow's problems today — because we care.
Free · No account · No taxAttach a Mark to any AI output and four questions stop being guesses. They become math anyone can re-check.
The model, the agent, or the pipeline that produced the output is named and signed. The signing key is in a public registry. Anyone can verify it came from where it says.
The person or organization the AI was acting for is named, with the scope of their authorization. The action is provably within their grant or provably outside it.
The safety policy or operating policy in force at the moment of production is named and hashed. You can prove what policy was applied without exposing its contents.
The UTC second of production is signed into the record. Chains let you confirm continuity with the actor's prior outputs. Revocations propagate without anyone phoning home.
Mark is the same shape for every kind of entity that can be the subject of a signed assertion. The AI category is live today. Humans and machines follow on the same envelope, on the same network — and every category is free, forever. Identity should never be paywalled.
Verifiable identity for AI agents, models, and pipelines. Free. Forever. Bundled with every Validiti product that touches AI.
Verifiable identity for people. The person holds their authorizations; relying parties verify against the substrate. Free, forever, when it ships.
Verifiable identity for devices — phones, sensors, vehicles, industrial systems. The device proves what it is, in the state it’s in. Free, forever, when it ships.
Mark is not something you install separately. It rides along with every Validiti product that touches AI. The capability is built in — you never opt in. When the receiving binaries ship, every output they produce carries a Mark by default.
Every future Validiti product that touches AI ships with Mark built in. No exception, no extra charge, no opt-in toggle.
Three steps. No SDK to import. No account to register. No license key to procure.
The Mark envelope shape and the verification math are public. If you can read JSON, you can use Mark.
Open the spec →A working Mark verifier is running on this page. Click Get sample, then Verify. Tamper any field and watch the seal fail.
Live now Jump to demo →A free sealed Validiti verifier ships built-in with every Validiti product that touches AI. Drop it into your build. No accounts, no telemetry, no fee.
Coming soon · with each productA live Mark · Agent verifier running on this page. Click Get sample, then Verify. Tamper any field and watch the seal fail. The verification math runs on our servers — your envelope never leaves this conversation.
The verifier above is real: every check runs on our servers via POST /api/mark/verify. The same verifier also ships sealed and bundled with every Validiti product that touches AI — that bundled form is Coming Soon, with each product’s release. The math is the math; you can also implement your own from the spec.
We took a hard look at this. We decided identity should never be paywalled — for people, for machines, or for the AI logic that increasingly acts on behalf of both.
No subscription. No usage cap. No tier-gating. No quiet pricing change in a future quarterly. Mark is free because nobody else was going to build it that way. Free for AI today. Free for humans when the human integration arrives. Free for machines when the machine integration arrives. The Validiti products that produce or consume Marks have their own pricing — Mark itself is the layer everyone gets.
Envelope shape, verification math, event types, revocation. Results-only, plain English. If you can read JSON, you can use it.
Free for AI today. Free for humans when Mark · Human arrives. Free for machines when Mark · Machine arrives. All three categories are free, forever. The capability rides with the Validiti products that produce or consume Marks — those products have their own pricing, but Mark itself is the layer everyone gets at no charge.
No one. Mark is a math layer over signed records. It runs on the hardware where Validiti products run — your hardware, your customers’ hardware, anyone’s hardware. There is no central server to call, no Validiti login to clear, no account to register.
The AI’s output gets a small envelope attached. The envelope names the AI, the person or organization it was acting for, the policy in force, and the time. The envelope is sealed with math anyone can re-check. That’s Mark.
No. Mark for AI is built into every Validiti product that touches AI. You don’t download Mark separately. You verify Marks — with the live verifier on this page, or with the bundled sealed binary when each Validiti product ships — when you want to check that an AI output came from where it claims to have come from.
Embed the free verifier into your software, hand it a Mark envelope, get back a pass/fail with a structured trace. Five minutes of integration work. No SDK to import, no platform to depend on. The verifier is a sealed Validiti binary, available when the Validiti products around it ship.
The issuer publishes a revocation. The revocation flows through the same channel envelopes flow on. Every verifier on every install learns the key is no longer trusted. No central revocation server to call, no list to subscribe to manually.
Mark proves who produced what, when, on whose behalf, under what policy. It does not adjudicate whether the action was right, whether the policy is good, or whether the producer is trustworthy. Those are human judgments. Mark gives you the evidence; the judgment is yours.
The envelope shape is the same. The network the free Mark · Agent established is the same network the human and machine integrations ride on — and they ship free too. When humans and machines start carrying Marks, every relying party that already verifies AI Marks will verify them with no changes.
Where tomorrow lives.
