The thesis

History was never
a byproduct.
It's the product.

Every other tool treats device history as exhaust, a snapshot that expires on the next scan. Revira treats it as the record itself: continuous, immutable, and defensible before anyone asks.

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The gap

Every other tool treats history as a byproduct.

Compliance is an evidentiary obligation, but the stack was built for operations. Each tool leaves history as a side effect, never as the record itself.

RMMs
History is a side effect of patching, never designed to be preserved or queried.
Scanners
A snapshot that expires on the next run. Nothing connects one scan to the next.
SIEMs
Logs you reconstruct under deadline: fragments, not a defensible timeline.
The record

History that never resets.

Every device observation is recorded the moment it happens, not at the next scan, not at the next audit. The record exists before anyone asks for it.

Compliance LedgerPast 30 days ▾Overview ▾
Devices
47
Observations
1.0M
Approved
45
Pending
2
Gaps
0
Ledger integrity verified · SHA-256 hash-chained> query: devices on Mar 15 · 847ms
Record integrity

Tamper with one record and every hash breaks.

Every observation, state change, and authorization is written to a SHA-256 hash-chained ledger the moment it happens. Each event is cryptographically linked to the one before it. This isn't a logging feature; it's the legal backbone of the record.

See it in the product
ledger/append.ts
1 const event = { 2 device: "ehr-terminal-02", 3 seen: "2026-03-15T14:22:07Z", 4 state: "observed", 5 }; 6 7 // each event is chained to the last 8 const hash = sha256(prev.hash + event); 9 ledger.append({ ...event, prev: prev.hash, hash }); 10 // break any record → every hash after it fails
How it works

From observation to audit-ready evidence.

Observe
Every device is seen the moment it appears, passively and continuously.
Correlate identity
Interface swaps, reimages, new MACs: all resolved to one stable device across time.
Record
The observation and any approval are written to the hash-chained ledger, permanently.
Report
Ask for any date range and it's already there, mapped to §164.308 / §164.312, no reconstruction.
Built for the auditor, not the admin

Answers before anyone asks.

Explainable reasoning
MAC vendor, hostname pattern, observed services, timing. Not opaque scoring. Every call is defensible in plain English.
Stable identity across change
Ethernet to Wi-Fi, a reinstall, a new address: still one device, one continuous, defensible timeline.
Zero-cloud, air-gapped
Compliance data never leaves the network. No outbound telemetry, no backend that can reach your records.
Query any date range
March 15th. Any date. Any window. Returned directly from the record in milliseconds. No staff interviews, no log digging.

The gap is architectural. The solution is infrastructure.

On-premise. No cloud. No compromise. A 30-day pilot proves it on your own network.

Request a demo →↓ Read the full white paper (PDF)