This repository is an archive of timestamped artifacts.
Each entry contains:
- SHA-256 digest (
.sha256) of the original data - OpenTimestamps proof (
.ots) binding that digest to a verifiable point in time
The vault holds cryptographic proofs only — not the underlying files. Its purpose is to provide tamper-resistant evidence that specific data existed at or before a given timestamp.
- Visit opentimestamps.org
- Upload both:
- The
.otsfile - The corresponding
.sha256file
- The
- The site will validate the proof and display whether it has been anchored to the Bitcoin blockchain.
For local verification using the OpenTimestamps client:
# Inspect the .ots file
ots info file.ots
# Verify the OpenTimestamps proof
ots verify file.ots