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forensic-watermarking

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TheHolyOneZ / ZWatermark

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Every Image, invisibly signed with your cryptographic identity. Local-first Tauri desktop app that embeds a signed steganographic watermark (DWT spread-spectrum + Ed25519-signed LSB) with RFC 3161 + OpenTimestamps time proofs — verify offline, no accounts, no cloud.

react desktop-app rust screenshot cryptography steganography ed25519 digital-signature dwt watermarking opentimestamps rfc3161 timestamping digital-watermarking tauri digital-watermark local-first blake3 forensic-watermarking
  • Updated Jul 5, 2026
  • TypeScript

api-evangelist / echomark

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EchoMark is an information-security company that embeds unique, invisible forensic watermarks — different for every recipient — into emails, documents, images, screen captures, and file-share links, so that when internal information leaks the exposed copy can be traced back to the individual it was released to.

security company information-security leak-detection data-loss-prevention apis-json insider-threat forensic-watermarking
  • Updated Aug 4, 2026

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