Don't trust.
Verify.
0REI transforms event logs into tamper-evident Evidence Packets—cryptographic seals, offline verification, zero vendor lock-in.
Single compiled binary. No runtime dependencies. Deploy anywhere in seconds.
Total deployment footprint. Runs on bare metal, containers, or embedded systems.
No cloud. No database. No external services. Your keys, your infrastructure.
Try to Break It
LIVE DEMOClick any field to tamper with a sealed record. Watch the cryptographic verification fail in real-time.
Why This Exists
Disputes are expensive. Regulators are relentless. Logs are editable. 0REI gives you verifiable integrity at the point of record.
01 Non-repudiation
Cryptographic signatures bind metadata and payload hash into a verifiable commitment. Once sealed, alteration is computationally infeasible.
- Deterministic payload canonicalization
- Collision-resistant hash + field binding
- Asymmetric signature over sealed payload
02 Crash Survivability
The durable storage layer persists events through failure modes using crash-safe write patterns. Network dies? Data stays safe.
- Network partition mid-seal
- Process crash during write
- Storage full / disk failure
03 Offline Verification
Your team validates seals without network access or vendor dependencies. Zero lock-in. Forever portable.
- A laptop (any OS)
- The Evidence Packet ZIP
- No internet. No vendor. No keys.
Built by Someone Who Knows What's at Stake
Mark Askey
Navy combat medic. Schlumberger and NOV field operations. Corporate VP across aerospace, biomedical, and robotics manufacturing inside ISO 9001, ISO 13485, ITAR, and DFARS quality systems.
I built 0REI because I've seen what happens when evidence isn't tamper-proof. In regulated industries, "trust me" isn't good enough. The record has to prove itself.
Built for Regulated Industries
Any environment where evidence integrity is non-negotiable.
Financial Services
Trade confirmations, regulatory filings, audit trails. Tamper-evident records that survive examiner scrutiny.
Healthcare
Patient records, consent forms, compliance evidence. HIPAA-grade integrity without cloud dependency.
Defense & Aerospace
ITAR-controlled documents, chain of custody, inspection records. Air-gap ready for classified environments.
Legal
Contract execution, discovery preservation, chain of evidence. Cryptographic proof that holds up in court.
Supply Chain
Provenance tracking, certificates of origin, inspection records. Immutable proof from source to destination.
Energy & Utilities
SCADA telemetry, pipeline inspection logs, regulatory compliance. Evidence that survives field conditions.
What You Ship to Auditors
A self-contained proof bundle with zero dependencies on our servers. Verifiable offline, forever.
core/ canonicalized payload
core/ cryptographic manifest
proof/ standalone verification tooling
proof/ pre-computed verification proof
docs/ technical specification
Proof Sprint
Two weeks. Fixed scope. Fixed price. We deploy, wire one stream, generate evidence, deliver closeout report.
Start Your Proof Sprint →AWS QLDB was deprecated July 2025
If your audit trail lived on QLDB, you need a replacement that doesn't lock you into another cloud. 0REI runs on your hardware, verifies offline, and produces portable evidence packets your team controls.
Your metal. Your keys. No cloud dependency.
Zero network requirement. Zero telemetry.
Evidence Packets verify without vendor access.