Add trusted timestamps to your things.
This is useful later to prove that these things existed today and nothing more.
Create
click to timestamp a file
the file stays on this device
Verify
verify a receipt in this browser
choose a bundle or a .tsr file
Receipts
This data is local to your browser.
About
This is an in-browser rfc3161 submitter:
- The files never leave your computer.
- Non-commercial use only.
Learn about Trusted Timestamping here:
Your receipts are not linked to you.
Relay Server
This client needs a relay on our servers:
- TSAs may ban our relay if you abuse it.
- The relay may rate-limit under load.
- We archive TSA certificates here.
If you ticked the "Upload a copy" box:
- The relay saves a copy of the receipt here.
- We can give you back a receipt if lost.
- Untick that box if you need strong privacy.
We may share these receipts for research.
Experimental
We run a post-quantum TSA (ML-DSA-44) here:
- POST tsa.testing.archive.rip (root / certs)
This TSA "lite" is not backed by hardware.