Step 1
Send your logs
One API call. Works with CloudTrail, Cloud Logging, GitHub, or any JSON logs.
No schema changes. No complex setup.
Built for security teams, compliance leads, and auditors
Tamper-evident audit proof
Auditors ask for proof.Blocklog gives you proof.
Cryptographic proof your audit logs are intact, verifiable by anyone even if Blocklog disappears tomorrow.
Blocklog turns log integrity from a promise into proof.
For compliance teamsYour auditor gets evidence they can verify without trusting your app.
For audit reviewYour team keeps shipping while Blocklog handles the proof trail.
For engineering teamsNo credit card required.
Pilot includes ingestion setup, proof generation, and an auditor-ready verification flow.
Why teams start now
Portable proof bundles you can keep
Independent verification for auditors
Fast pilot with founder-led onboarding
30 secondsfor an auditor to verify a proof bundle
20-day pilotto prove the workflow before rollout
No schema changesfor existing JSON log sources
Auditor challenge“Prove your logs weren’t modified.”
This is where most teams lose days pulling exports, screenshots, and manual explanations together.
Blocklog responseProof bundle ready.
Integrity verified
Timestamp anchored
Auditor can verify independently
POST /api/v1/logs/batch
{
"logs": [
{
"event_type": "payment.created",
"source": "payments-api",
"idempotency_key": "evt_payment_123_created",
"data": {
"user_id": "123",
"amount": 2000,
"currency": "USD"
}
}
]
}
$ ./verify.sh proof_bundle.zip
[OK] log chain intact
[OK] timestamp anchored
[OK] proof independently verifiable
Why buyers care
Move from "trust our process" to proof your auditor can check.Pilot structure
Start a 20-day pilot.No credit card required. Keep your data if you continue.
Proof flow
From logs to proof in 3 steps. No complex setup.
Step 2
We create cryptographic proof
Automatically sealed and anchored so tampering becomes visible and independently verifiable.
Runs in the background. No manual review step required.
Step 3
Give proof to your auditor
Download a proof bundle your auditor can verify without trusting your app or ours.
Includes verification data and an auditor-friendly report.
What the auditor sees
Your auditor can verify this independently in 30 seconds.
./verify.sh proof_bundle.zip
[OK] bundle signature valid
[OK] log hashes match
[OK] anchor timestamp found
[OK] evidence ready for review
No screenshots. No custom explanation. No trust leap.
What you don't have to do
No extra work required.
No custom audit scripts
No manual log stitching
No screenshot-based evidence
No reliance on internal tooling
Audit outcomes
What this means for your audit.
Pass SOC 2 without log-verification delays
Before: 2 weeks of manual exports, screenshots, and integrity questions.
After: 5 minutes to hand over a proof bundle backed by cryptographic evidence.
Result: Faster audit completion and less back-and-forth.
Give auditors what they actually want
Before: "We use locked storage" and a request to trust your process.
After: "Here is proof you can verify independently."
Result: Stronger answers, fewer follow-up questions.
Stay audit-ready year-round
Before: Point-in-time evidence collection once the audit starts.
After: Ongoing verification with current, portable proof bundles.
Result: Less scramble during audit season.
Use independence as a trust advantage
Before: The auditor has to trust your cloud provider and your narrative.
After: The auditor can verify the evidence without trusting anyone.
Result: A cleaner story for enterprise buyers and security reviewers.
Two audiences
Built for auditors, not just engineers.
For engineers
Simple integration
- One ingestion endpoint for new and existing JSON logs
- Python and Node SDKs for faster rollout
- No schema changes required for common log sources
- Detailed docs, proof export, and verification endpoints
For auditors
Independent verification
- Independent verification without trusting Blocklog
- Professional proof bundles and portable audit evidence
- Clear integrity story for SOC 2, ISO 27001, and HIPAA workflows
- Step-by-step verification path for reviewers and external auditors
Buyer objections
Security and compliance questions, answered.
Where is our data stored?
Blocklog is designed around proof and audit evidence, not opaque storage claims. Teams can keep raw logs in their own systems while using Blocklog for verification workflows, proof bundles, and integrity checks.
What if Blocklog gets breached?
The core value is that proofs stay independently verifiable. If Blocklog is unavailable or compromised, exported proof bundles and public anchor data still let reviewers validate integrity without trusting the application.
How do you prevent tampering or retroactive changes to logs?
Blocklog is built around immutability and verifiable integrity. Once events are processed, they are cryptographically linked and anchored, making any modification detectable. Instead of relying on internal assurances, reviewers can independently verify that logs have not been altered by checking proof bundles against their original anchors.
What if Blocklog goes away?
That is exactly why independent verification matters. Proof bundles are portable, and the verification story does not depend on a private database or a promise that Blocklog will always be online.
How do you handle security reviews and compliance?
Security buyers usually want architecture clarity, evidence handling, and scope boundaries. Blocklog keeps the conversation focused on verifiable proof, operational controls, and clear documentation rather than vague trust language.
What about GDPR and data sensitivity?
Compliance teams still need to review their own obligations, but Blocklog is built to support defensible evidence handling, immutable proof exports, and clearer separation between raw event capture and verification artifacts.
Use cases
Beyond SOC 2: other ways teams use Blocklog.
Current workflow
Incident response verification
After an incident, show what happened and when, with evidence that the underlying record was not silently changed after the fact.
Current workflow
SOC 2 and internal audit prep
Reduce the manual work of assembling integrity evidence for audit review and recurring compliance checks.
Current workflow
Customer and vendor trust reviews
Share portable proof instead of screenshots and process descriptions when customers or partners ask how log integrity is maintained.
SOC 2 speed
Save 2 weeks on your SOC 2 audit.
- CloudTrail exports and app logs assembled by hand
- Manual formatting for auditor review
- Integrity questions answered with process descriptions
- Repeated evidence requests during audit review
Typical result: long evidence cycles and repeated integrity questions.
- Send logs once through the ingestion pipeline
- Proof bundle generated automatically
- Auditor verifies independently in seconds
- Fewer follow-up requests and faster approval
Typical result: faster approval, clearer evidence, less audit friction.
Final call
Your audit is coming. Be ready.
Don't wait until the last minute to explain log integrity. Start a 20-day pilot now and have cryptographic proof ready before the audit clock becomes painful.
Primary path
Start 20-Day Pilot
- No credit card required
- Full product access
- Founder-led onboarding
Not ready yet?
Take the lower-friction path.
No credit card required
Cancel anytime
$149 refunded if you convert
White-glove onboarding included
Pilot clarity
Run the workflow before committing.
Start with a 20-day pilot, prove the evidence flow with your real logs, then expand only if it makes audit review meaningfully easier.
Documentation