Unverified50% confidenceFactExact time
Claude Watermark 完全免费、无限次使用、无需注册账号，且所有处理都在浏览器本地完成，没有内容上传到服务器
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
8/28/2026
First Seen
Valid until: 11/26/2026
Sources
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https://kongchang.com/claim/810586API
curl https://kongchang.com/api/v1/knowledge/claims/810586MCP
get_claim(id=810586)