Free Bitcoin timestamp for any file — no upload, no account
About HashDocket
Hash any file locally in your browser and create a free OpenTimestamps Bitcoin receipt without uploading the original. No account required. Optional paid public proof records are available for users who want a searchable SHA-256 registry entry.
PlatformsWeb
LaunchedSep 18, 2026
✓ VerifiedOct 31, 2026
Key features
- Local SHA-256 hashing
- Free OpenTimestamps Bitcoin receipt
- No source file upload
- No account required
- Optional public proof registry
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