Hypercubs | Infrastructure for certainty

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01 Deterministic Replay Compute

Failures don’t<br>repeat themselves.<br>DRC makes them.

Capture the exact execution of a distributed system. Replay it under control.<br>Find the first divergence, and leave with evidence instead of a theory.

Explore DRC<br>See how it works

DRC / TRACE<br>EXEC_7F3A91<br>CAPTURED

PAYMENTS-API<br>34.92 MS<br>7 LAYERS

HTTP<br>AUTH<br>CACHE READ<br>DB WRITE

FIRST DIVERGENCE<br>Cache eviction preceded retry guard<br>confidence 0.97 · sequence 0421

drc replay exec_7f3a91 --fix

COPY

HYPR / 001<br>40.7128° N

01Capture Every consequential event

02Replay Under deterministic control

03Compare Across every system layer

04Prove With signed evidence

THE PROBLEM

DISTRIBUTED REALITY

Production failures are rarely missing data. They are missing order.

Logs tell fragments. Traces describe a path. Neither lets you rerun the moment<br>your system became something else.

DRC records causality across services, queues, databases, caches, files, and<br>runtime state, then rebuilds the execution as a controlled experiment.

02 Interactive product tour

Follow a failure<br>from signal to proof.

Step through a production payment incident. See what DRC captures, how replay<br>isolates the divergence, and how a fix is verified against the original execution.

DRC GUIDED SESSION

EXECUTION 7F3A91

READY

STEP 01 / OBSERVE

A payment completed twice.

DRC preserves the execution across each service boundary before the evidence disappears.

CLIENT00.00 MS

PAYMENTS API04.12 MS

CACHE12.41 MS

QUEUE19.30 MS

DATABASE31.06 MS

ANOMALY DETECTED<br>Idempotency key not found<br>cache.read / sequence 0421

CAPTURE SUMMARY

Events8,492

Services06

Duration34.92 ms

0420queue.consumematched<br>0421cache.readmissing<br>0422db.writeduplicate

STEP 02 / REPLAY

Run the moment again, under control.

Time, randomness, network responses, and side effects are virtualized from the captured evidence.

ORIGINALPRODUCTION

001request

118service

421cache

792database

99.97%FIDELITY

REPLAYISOLATED

001request

118service

421cache

792blocked

REPLAY CONTROL

ClockVirtual

NetworkCaptured

Side effectsBlocked

COMMAND<br>drc replay 7f3a91 --strict

STEP 03 / ISOLATE

Find the first fact that changed.

DRC compares the causal sequence, not just the final error, and isolates the earliest meaningful difference.

BASELINEINCIDENT

0418retry.guardretry.guardMATCH

0419queue.ackqueue.ackMATCH

0421cache.hitcache.missFIRST DIVERGENCE

0422write.oncewrite.twiceCONSEQUENCE

ROOT CAUSE

0.97 CONFIDENCE

CLASSIFICATION<br>Cache eviction preceded the retry guard, allowing the duplicate write path.

STEP 04 / VERIFY

Test the fix against captured reality.

The candidate patch is replayed against the same production state, then sealed into a signed evidence pack.

100% PATHS MATCH

Duplicate write eliminatedPASS

No new divergence foundPASS

Blast radius evaluatedPASS

Evidence signature validPASS

EVIDENCE PACK

VERIFIED<br>ED25519

CONTENT HASH<br>c61f0b9a8e47

01 / 04

Previous<br>Next step

03 One execution. Every layer.

See the system<br>as it happened.

A shared causal clock turns scattered telemetry into one inspectable execution.<br>Follow the signal from ingress to side effect without stitching dashboards together.

INGRESSAPPLICATIONSTATEINFRA

HTTP00.00 ms

SERVICE03.18 ms

CACHE12.41 ms

QUEUE18.92 ms

DATABASE31.06 ms

FILESYSTEM34.92 ms

0421<br>Observed state departs from baseline

EVENTS08,492

FIDELITY99.97%

ROOT CAUSE12.41ms

04 From incident to certainty

Debug the execution,<br>not the aftermath.

01 / RECORD

Capture without rewriting your system.

Transparent proxies, sidecars, eBPF, OpenTelemetry, and cloud connectors preserve source provenance.

02 / REPLAY

A′

Recreate the exact conditions.

Virtualized time, randomness, files, networks, and side effects make executions repeatable.

03 / RESOLVE

FIXED

Verify the fix before production does.

Test a patch against captured reality, map the blast radius, and export signed evidence.

05 Evidence, not inference

An answer your<br>systems can defend.

Every evidence pack is content-addressed, integrity-checked, and signed with<br>Ed25519, ready for engineering review, incident response, or audit.

EXECUTION EVIDENCE PACK / 2026-07-30

VERIFIED

INCIDENT<br>Duplicate payout prevented in replay

EXECUTION7f3a91…e402

EVENTS8,492

FIRST DIVERGENCESEQ 0421

CONFIDENCE0.97

ED25519 SIGNATUREc61f0b9a…91dc

HYPERCUBSINFRASTRUCTURE / SYSTEMS

We build tools for the moments software cannot afford ambiguity.

DRC is the first Hypercubs product. More are being built around the same idea:<br>complex systems should be observable, testable, and accountable by construction.

001DRC AVAILABLE

002UNDISCLOSED IN DEVELOPMENT

003UNDISCLOSED RESEARCH

06 Start with the failure you cannot reproduce

Turn “it happened once”<br>into run it again.

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