Why the Next Big Network Replaces LinkedIn | a16z New Media Team

a16z's Cosign uses AI-scraped public vouches and lists to build a reputation-first professional network aimed at discovering talent before the market does.

• New launch: a16z partners David Booth and Katie Goldstein unveiled Cosign, an AI-curated professional network built by Eric Tornberg and team over roughly one month, though the underlying thesis is 7-8 years old.
• Core mechanic: Cosign centers on public 'cosigns' (vouches) plus curated Lists of people and companies, replacing self-written LinkedIn resumes with reputation supplied by others.

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