How NexArt Verifies AI Execution

NexArt creates verifiable records of AI execution that can be independently checked.

What NexArt is

NexArt is verifiable execution infrastructure for AI systems. It produces tamper-evident records of what your AI actually ran.
A lightweight integration captures inputs, outputs, and execution context at runtime and seals them into a single record locally.
An independent attestation node certifies each record so that no single party controls the proof.
Certification adds a third-party signature. The record can then be verified by anyone without trusting the operator.
verify.nexart.io is a public verification surface. Anyone can check a record there with no account, no login, and no dependency on NexArt.
A Project Bundle groups multiple execution steps into one verifiable artifact, covering entire workflows or agent sessions.
NexArt proves what executed. It does not prove that the output is correct or that the model behaved well.

Five steps from execution to proof

Execution happens

Your AI system runs a model call, tool call, or automated decision. NexArt does not change how your system works. It attaches at the boundary where execution occurs.

A Certified Execution Record is created

Inputs, outputs, and execution context are captured and sealed into a single tamper-evident record. This happens locally, inside your system. The record is self-contained and portable.

Optional: the NexArt attestation node certifies the record

The NexArt attestation node signs the record with an Ed25519 receipt over the certificateHash. Where available, an external timestamp provides additional third-party time evidence. The node does not see raw content in confidential mode. Certification is separate from local sealing.

Verification checks the record independently

Anyone can verify the record at verify.nexart.io. No account, no login, no API key. Verification recomputes the seal and checks the signature. It works even if NexArt is offline.

Project Bundles group multiple executions

When a workflow involves multiple steps, individual records are grouped into a single Project Bundle. One artifact covers the entire session. Verifiers check the whole workflow at once.

Your systemruns an AI execution

↓

SDK / CLIcaptures and seals the record locally

↓optional

Nodesigns and certifies the record independently

↓

Verifierchecks the record at verify.nexart.io

What to know before you start

The SDK is not the Node

The SDK runs locally in your system and creates records. The Node is an independent service that certifies them. They are separate components with separate trust boundaries.

Local sealing is not certification

Sealing a record locally proves it has not been tampered with. Certification adds an independent third-party attestation. Both are useful. Certification is optional.

Verification is not a dashboard

verify.nexart.io is a public verification surface, not a monitoring tool. It checks whether a specific record is intact. It does not display analytics, logs, or system health.

NexArt proves execution integrity, not correctness

A verified record proves that specific inputs produced specific outputs at a specific time. It does not prove the output was correct, fair, or appropriate.

What verification proves, and what it does not

Verification confirms the integrity of the certificate-bound fields and, where present, the validity of the attestation-node signature and external timestamp evidence.

Verification does not establish that the AI output was correct, fair, lawful or complete. The completeness and truthfulness of recorded execution data depend on the integration and capture boundary. Anyone can verify a public or exported record without an account; creating a node-attested record requires NexArt credentials.

Ready to start?

Adoption is incremental. Start with a single certified execution and expand from there.

Start certifying executions