Verify Your Timestamps

Verify OpenTimestamps Receipt

Verify your document's Bitcoin-anchored timestamp in three simple steps. Drop your file, upload the *.ots receipt, and confirm authenticity instantly.🔒 100% private - everything happens in your browser

Provide Your File

Upload your file or paste its SHA-256 hash to begin verification

Select File

Paste SHA-256 (hex)

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Pro tip: Paste a 64-character SHA-256 hash directly into the input field, or drag & drop your file for automatic hashing.

Upload Your Receipt

Select the OpenTimestamps receipt file (*.ots) that was generated when you timestamped your document

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Click to select .ots receipt file

or drag and drop it here

Verify Your Timestamp

Verification happens automatically once you provide both the file and receipt

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100% Private & Secure

We publish and verify hashes only. Your files never leave your device. All verification happens in your browser using open-source cryptography.

Preparing verifier...