ObsecuraProvenance Analyser
What can actually be proven about who wrote this text.
This runs every provenance check available to it, reports what each one found, and separates hard evidence from statistical guesswork. Claude's own watermark is not readable by anyone outside Anthropic, so the engine says so rather than pretending otherwise.
Results will appear here.
Machine-readable result
How it works
Paste a passage and Obsecura runs a set of independent checks over it. Some look for markers a file can carry from the tool that produced it. Others compare the writing itself against patterns learned from a large collection of human and machine-written text.
Each check reports on its own rather than being blended into a single unexplained number, so you can see what was actually found. Everything happens on your device.
Getting a useful result
- Longer passages read more steadily than short ones. A few hundred words works far better than a sentence or two.
- Paste the text as it was originally written. Rewriting or trimming it first changes what the checks see.
- Treat the outcome as an impression of how the writing reads, not a decision about who wrote it.