Unverified50% confidenceFactExact time
The longer the text, the more statistical samples are available and the higher the test's statistical power, which is why watermark detection in short texts is inherently difficult.
1
Sources
50%
Confidence
Long-term
Relevance
9/4/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedTexts that are too short (e.g., fewer than 100 tokens) may not accumulate sufficient statistical signal for a reliable watermark determination.71% similarUnverifiedWatermark detection typically requires text of more than 200 tokens in length to identify the watermark source at a controlled false positive rate.70% similarUnverified水印检测器通过统计文本中绿名单token出现频率是否显著高于随机预期来判断文本是否被水印标记66% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/856651API
curl https://kongchang.com/api/v1/knowledge/claims/856651MCP
get_claim(id=856651)