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Cryptographic Proofs
Create tamper-proof timestamps backed by blockchain consensus. Anyone can verify without trusting a third party.
UTSUniversal Timestamps
Decentralized timestamping protocol for verifiable proofs of existence
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Quick Start
Try our official web app
Visit timestamps.now to timestamp your first file in seconds. No sign-up required!
Via CLI
Install the CLI and timestamp your first file:
bash
cargo install uts-cli --version 0.1.0-alpha.0 --locked
uts stamp myfile.txt
# wait ~10 seconds for the batch to be attested on-chain
uts upgrade myfile.txt.ots
uts verify myfile.txtHow It Works
- Submit - Send your data hash to a calendar server, get a pending timestamp in return
- Batch - Your hash joins a Merkle tree with others
- Attest - The tree root is timestamped on-chain via EAS
- Upgrade - Upgrade the timestamp to self-contained.
- Verify - Anyone can verify the timestamp proof
For implementation details, see the Reference Book.