Seal a file

Hash it here. Keep the root.

The file is read and hashed locally in your browser. Only the manifest (hashes, filename, size, timestamp) ever leaves your device. The Authority signs the Merkle root and records the signed manifest to the ledger.

Drop a file to seal

Up to 50 MB in the browser. Nothing is uploaded. The hash happens here.

Choose a file

Any file type. PDF, CSV, JSON, images, video, archives.
For files larger than 50 MB, use the BitSeal CLI.

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