DeepMark (YC F26) — A live watermark inside AI voice that survives phone calls
DeepMark is the authentication layer for AI voice. When an AI agent speaks, we embed a compact, machine-readable ID directly into the audio, not in metadata, which gets stripped the moment a file is touched.
DeepMark is a Y Combinator company in the Fall 2026 batch. Its directory entry describes it as: A live watermark inside AI voice that survives phone calls. The founders listed are Slavko Kovačević (Founder/CEO), Kosta Pavlović (Founder/CSO) (Y Combinator directory entry, September 10, 2026).
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DeepMark is the authentication layer for AI voice. When an AI agent speaks, we embed a compact, machine-readable ID directly into the audio, not in metadata, which gets stripped the moment a file is touched. The ID resolves to a trust record, so a bank, a call center, or the person on the line can verify in real time who the agent is.
deepmarkorganisation linked from the company's own record
AI-driven watermarking that embeds imperceptible identity into generated media for compliance, authentication, and trust.
The title and description the site itself served, answering 200. Not a cached copy and not the company's directory entry — what was live when we asked.
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Slavko Kovačević
Founder/CEO
Founder/CEO at DeepMark (YC F26). PhD candidate in Computer Science.
Kosta Pavlović
Founder/CSO
Founder/CSO at DeepMark (YC F26). PhD in Computer Science.
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
No investor is drawn from a Form D — the form states how many invested and never who. The one investor on this graph is named because a batch has exactly one.
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Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC
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Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
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Warning Bells
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