Capture without rewriting your system.
Transparent proxies, sidecars, eBPF, OpenTelemetry, and cloud connectors preserve source provenance.
01 Deterministic Replay Compute
Failures don’t
repeat themselves.
DRC makes them.
Capture the exact execution of a distributed system. Replay it under control. Find the first divergence, and leave with evidence instead of a theory.
DRC / TRACE
EXEC_7F3A91
CAPTURED
HTTP
AUTH
CACHE READ
DB WRITE
FIRST DIVERGENCE
Cache eviction preceded retry guard
confidence 0.97 · sequence 0421
$
drc replay exec_7f3a91 --fix
01CaptureEvery consequential event
02ReplayUnder deterministic control
03CompareAcross every system layer
04ProveWith 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 your system became something else.
DRC records causality across services, queues, databases, caches, files, and runtime state, then rebuilds the execution as a controlled experiment.
02 Interactive product tour
Follow a failure
from signal to proof.
Step through a production payment incident. See what DRC captures, how replay isolates the divergence, and how a fix is verified against the original execution.
STEP 01 / OBSERVE
A payment completed twice.
DRC preserves the execution across each service boundary before the evidence disappears.
CAPTURE SUMMARY
- Events
- 8,492
- Services
- 06
- Duration
- 34.92 ms
0420
queue.consumematched
0421cache.readmissing
0422db.writeduplicate
STEP 02 / REPLAY
Run the moment again, under control.
Time, randomness, network responses, and side effects are virtualized from the captured evidence.
REPLAY CONTROL
- Clock
- Virtual
- Network
- Captured
- Side effects
- Blocked
COMMAND
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.
ROOT CAUSE
0.97CONFIDENCE
CLASSIFICATION
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.
EVIDENCE PACK
VERIFIED
ED25519
CONTENT HASH
c61f0b9a8e47
03 One execution. Every layer.
See the system
as it happened.
A shared causal clock turns scattered telemetry into one inspectable execution. 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
Observed state departs from baseline
EVENTS08,492
FIDELITY99.97%
ROOT CAUSE12.41ms
04 From incident to certainty
Debug the execution,
not the aftermath.
Recreate the exact conditions.
Virtualized time, randomness, files, networks, and side effects make executions repeatable.
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
systems can defend.
Every evidence pack is content-addressed, integrity-checked, and signed with Ed25519, ready for engineering review, incident response, or audit.
Read the architectureH
EXECUTION EVIDENCEPACK / 2026-07-30
VERIFIED
INCIDENT
Duplicate payout prevented in replay
EXECUTION
7f3a91…e402EVENTS
8,492FIRST DIVERGENCE
SEQ 0421CONFIDENCE
0.97ED25519 SIGNATURE
c61f0b9a…91dcHYPERCUBSINFRASTRUCTURE / 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: complex systems should be observable, testable, and accountable by construction.
001DRCAVAILABLE
002UNDISCLOSEDIN DEVELOPMENT
003UNDISCLOSEDRESEARCH
06 Start with the failure you cannot reproduce