Mark
Open research instrument for constrained text transforms — studies statistical text watermarks without changing visible characters.
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What is Mark?
FuckMark is an open-source CLI research tool that studies statistical text watermarks with a strict invariant: visible characters never change. It's designed for researchers analyzing watermarking techniques while ensuring text readability and integrity are preserved.
Mark pricing
Pricing model: Freemium
Free (MIT licensed, open source)
Mark pros
- Maintains visible text invariance—transforms that would alter readable text don't ship
- Cryptographically verified installation via SHA-256 checksums of GitHub Releases
- MIT licensed, fully open source with public specifications and confirmation keys
- No telemetry or privacy tracking
Mark cons
- Requires Python 3.11 or higher
- Research-focused tool with narrow use case (text watermarking analysis)
- Minimal user documentation and guidance on the main page
Frequently asked questions about Mark
How does Mark prevent text from being altered?
User-visible text is the core product. The CLI enforces a fail-close contract: if a transformation would change what users can read, it doesn't ship. Context and evidence survive intact.
How do I verify the installation is genuine?
The one-liner pulls tagged GitHub Releases and verifies them against SHA256SUMS before installation. All source code, specifications, and confirmation keys are publicly available.
Does Mark collect any data?
No, there is no telemetry or data collection.
What platforms does Mark support?
macOS, Linux, and Windows (Python 3.11+ required).