Ed25519 signature
The daily checkpoint binds monitor, date, count and SHA-256 digest.
Signed check log
Measured.And verifiable.
Clesk Uptime summarizes completed UTC days in a cryptographically signed checkpoint. Exported data can be verified offline against the public key.
Ed25519 / SHA-256
shop.example
Operational
Check log
✓ Example of a signed check log
Fictional signature for illustration.
01
a7c3f892…02
b4e1d06f…03
SHA-256 / Ed255198c29e4b5…01 / Signed check log
What you can keep track of
JSON export
Export the underlying checks together with digest and signature.
Offline verification
Verification does not require access to your Clesk account.
Verifiable wording without absolute immutability claims
The signature shows whether an exported checkpoint matches the published key and whether the digest or check count differs. It is a technical integrity proof, not an external timestamp or independent notary.
- Internal evidence and incident reviews
- SLA documentation for customers
- Technical review of exported check data
02 / Docs
Set up in three steps
- 01
Monitor is running
Every active monitor collects checks; completed UTC days are sealed with a signature automatically.
- 02
Open the check log
Pick a day on the website detail page: checks, digest and signature status are visible.
- 03
Export and verify
Download the JSON export and recalculate it offline against the published key.
03 / FAQ
Frequently asked questions
Is the check log immutable?
It is cryptographically signed and verifiable. An independent external timestamp is not currently part of the process.
Can I run the verification myself?
Yes. The export, public key and verification logic are designed for offline verification.
When do I need signed check logs?
Whenever a screenshot is not enough: SLA discussions with clients, evidence towards your hosting provider, or internal incident reviews with a solid data basis.
Does my current monitoring service offer this too?
Signed, offline-verifiable check logs are rare in the market. Our comparison pages state per provider whether the feature exists there.
Clesk Uptime
Monitoring is more valuable when it remains traceable.
Start for free and export the check data for your monitors.