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Cosign: Mapping Professional Reputation in Silicon Valley

A new tool to make professional endorsements more visible.

a16z Podcast2 min

1Cosign’s Core Idea

Cosign, introduced by a16z’s Erik Torenberg, focuses on professional reputation by highlighting the people, companies, and products individuals endorse. It aims to make these endorsements more visible and durable, emphasizing that professional signals like who believes in you can be more valuable than traditional credentials.

2Silicon Valley’s Reputation Economy

The product taps into Silicon Valley’s culture, where mentorship, collaboration, and belief in emerging talent often drive career trajectories. Cosign seeks to formalize these informal networks, making it easier to identify trusted collaborators and rising stars in the industry.

3Human Endorsements vs. AI

As AI increases the abundance of information and outreach, Cosign argues that human endorsements will become even more valuable. The tool positions itself as a way to cut through the noise by leveraging trusted professional relationships.

4Existing Networks’ Shortcomings

Cosign critiques existing professional networks for missing key aspects of reputation-building. While platforms like LinkedIn focus on credentials and connections, Cosign emphasizes the qualitative value of endorsements from mentors, colleagues, and peers.

5Early Discovery of Talent

By making reputation more legible, Cosign aims to help talented individuals get discovered earlier in their careers. This could accelerate career growth and foster collaborations that might otherwise take years to develop.

6Collaboration and Visibility

The tool also seeks to help professionals carry their behind-the-scenes work into their next endeavors. By highlighting endorsements, Cosign provides a way for individuals to showcase their contributions and build credibility in new projects.

7Building Durable Signals

Cosign’s focus on durability ensures that endorsements remain relevant over time. This contrasts with fleeting social media interactions, offering a more lasting record of professional support and belief.

8Implications for Silicon Valley

Cosign’s launch reflects broader trends in Silicon Valley, where reputation and networks are critical to success. By formalizing these dynamics, the tool could reshape how professionals connect, collaborate, and advance their careers.

Original article: a16z Podcast — Cosign: Mapping Professional Reputation in Silicon Valley