Protecting AI Outputs with Bitcoin Timestamps
AI tools (ChatGPT, Claude, Midjourney, DALL-E, Sora…) generate text, images, and video at scale. That raises a real problem: proving when a piece of AI output was created — and proving you didn't edit it later.
Why timestamp AI output?
The core issue is the same as any digital file: bytes can be edited silently. A SHA-256 hash + Bitcoin timestamp fixes the "what existed when" question permanently.
The workflow
1. Export your AI output as a file (image, PDF, text, JSON — whatever format matters).
2. Stamp it at satohash.io/stamp — hashed locally, anchored to Bitcoin in ~60 minutes.
3. Keep the pair — the original file + its .ots proof.
4. Re-verify anytime with the proof card (/p/<hash>) or independently on opentimestamps.org.
Best practices for AI work
- Stamp at the moment of creation, not when a dispute starts. A timestamp only proves existence before the block — stamp early.
- Include metadata — if the model/version matters, save it in a sidecar file and stamp that too, or embed it in a manifest you stamp.
- Stamp intermediate versions — if you iterate on a design, stamp each milestone. Cheap, and it builds an undeniable history.
- Batch it — stamp many outputs at once with the batch tool; one Bitcoin anchor covers them all.
The privacy angle
Your AI outputs never leave your device — Satohash only sees the fingerprint. That matters if your prompts or outputs are commercially sensitive.
The honest limits
- Timestamping proves existence at a time, not authorship. For AI work, pair it with your authorship records (signed prompts, project files).
- It can't prove which AI model made it — that's provenance, a different problem.
- Timestamps are strongest as evidence, not automatic legal victory — but they're exactly the kind of mathematical proof courts increasingly expect.
Stamp your AI output before you publish: satohash.io/stamp