Create a private, dated proof that your screenplay existed today.

Drop your .fountain file below. Your computer hashes it locally, and only the 32-byte fingerprint is sent to public Bitcoin-timestamping calendars. The script content never leaves your browser.

Drag a .fountain file here, or click to choose.

UTF-8 plain text. Up to 8 MB.

Privacy. Hashing runs entirely in this tab. A 32-byte SHA-256 of the canonical bytes is the only data that leaves your machine, and it goes only to the OpenTimestamps public calendars listed below — the same destinations the screenreg CLI uses.

Bind my identity (Ed25519). Generates a fresh Ed25519 keypair, signs the claim body, and embeds the public key in the manifest. You will download the matching .pem private key alongside the proof — keep it safe; lose it and you lose the ability to later prove key control via challenge-response. Embed scene-tree Merkle root. Detects scene headings (INT. / EXT. / EST. / INT/EXT.) in the Fountain bytes and commits a Merkle root of per-scene hashes. Lets you later prove "scene 47 was in my registered script" without revealing the rest. Adds ~milliseconds to the compute step. Encrypt title and author with a password. AES-256-GCM, PBKDF2-HMAC-SHA256 at 600,000 iterations. The ciphertext is committed in the claim; the plaintext stays with you. Anyone with the password can decrypt; anyone without sees only the encrypted ciphertext and length-padded buckets.

Create a private, dated proof that your screenplay existed today.

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Your proof artifacts