LARRI for healthcare decisions.

LARRI acts like a digital notary for decisions concerning prior authorizations, claims, appeals, and export controls. It creates a tamper-evident, verifiable link between each recorded outcome and the evidence, cited policy, asserted decision-making authority, software version, recorded privacy-check results, digital signatures, timestamps, and trust metadata associated with it.

LARRI answers a multi-billion dollar problem in healthcare claims.

Healthcare audit logs record who accessed a system and when, but not the precise state of the record on which the decision-maker actually relied.

What travels with the decision

The exact record needed for integrity review.

LARRI Core minimizes PHI by allowing sensitive records and proprietary decision logic to remain private while exposing only necessary information and cryptographic commitments.

The independent LARRI Verifier can later confirm, offline and deterministically, that the receipt and supporting package are authentic, complete for the declared verification scope, and untampered—without requiring continued access to the producer.

Proprietary decision engine

LARRI Core

LARRI Core and Verifier overview

LARRI Core is the proprietary execution engine that turns the LARRI protocol into an operational decision system. It evaluates structured evidence against bound, version-controlled policies and produces deterministic outcomes, explicit refusals and a complete verification record for each decision.

Every result is cryptographically tied to the evidence considered, the policy version applied, the declared signer and trust context, and the exact Core release that produced it. This makes decisions portable, reproducible and independently checkable across organizations, without requiring disclosure of proprietary scoring methods, decision math or policy logic.

The LARRI specifications define the verification standard. LARRI Core is the controlled, auditable working product for issuing consistent decisions, detecting drift or substitution, preserving provenance and supporting accountable automation at scale.

Regulated deployment

Built for HIPAA-aligned healthcare verification

LARRI is designed for full compliance with the protections healthcare institutions and regulators expect.

The protocol enforces limiting unnecessary disclosure, preserves the integrity of electronic health information, and keeps trust separate from the records being verified while preventing sensitive data from leaking through reports or diagnostics.

Its healthcare profile checks the exact export package, blocks releases with required privacy failures, and produces safe, reviewable results without exposing raw patient information.

LARRI is a strong technical foundation for HIPAA-regulated workflows, operating alongside an institution’s required access controls, encryption, risk management, retention policies and administrative safeguards.

Potential patient benefit

Reconstructing the record can mean months of waiting. LARRI could shorten it to days.

The opportunity. Documentation and claim-data failures are a major source of denials, and patients who challenge denials routinely wait a month or longer. LARRI directly targets the record-reconstruction layer of that delay by making the operative evidence, rules, software, authority and subsequent changes independently checkable. It does not decide whether a claim should be paid, but if it should be paid, a LARRI receipt can skip long review periods so the patient doesn't wait on human auditors.

Why adopt LARRI for healthcare?

28%Of hospital claim denials were tied to claim data or medical documentation.

Optum’s analysis of approximately 124 million hospital claim remits found 15.89% of denials involved missing or invalid claim data and 12.08% involved requested medical documentation.

Read the Optum index

>60%Of people who challenged a claim denial and had received a decision waited one month or longer.

The nationally representative Commonwealth Fund 2025 Affordability Survey found that more than 60% of people who challenged a claim denial and had received a decision waited at least one month for the insurer to decide. The same survey found that 43% of adults who experienced a claim denial incurred medical debt they were still paying.

Read the Commonwealth Fund study

75 daysMedian delay in access to requested services in the sampled overturned or withdrawn denials.

A 2023 HHS Office of Inspector General audit of 70 sampled Medicaid managed-care prior-authorization denials found a median 75-day delay in access to requested services; one case reached 282 days.

Read the HHS OIG audit

When a claim is denied because the underlying record is disputed, patients can get stuck in lengthy review cycles that sometimes last for months. LARRI gives the insurer, provider, auditor, and patient the same independently checkable account of what the system decided, which supporting records it used, and whether anything changed afterward. Reviewers can verify the receipt and its supporting evidence immediately instead of spending weeks requesting documents, reconciling conflicting copies, rebuilding an audit trail, and determining which record is authentic. LARRI can help a payout review move directly to the real issues, where humans should decide.

Conceptual demonstration user interfaces

Explore selected Core and Verifier workflows.

These public interfaces are lightweight demonstrations. They do not expose or reproduce the full LARRI Core application.

Open LARRI Core conceptual UI ↗Open LARRI Verifier conceptual UI ↗