The a16z Show

The Reputation Graph of Silicon Valley | Introducing Cosign

· Summarized

Share this episode
Anyone with this link can open it.
Share Link
Start at 0:00

Key takeaways

  • The ability to identify talent and opportunities early is as critical as technical skill in Silicon Valley.
  • Reputation signals, such as who endorses you or follows you, serve as powerful, peer-driven credentials that influence professional opportunities.
  • Cosign aims to make these signals more visible, durable, and granular than traditional profiles on platforms like LinkedIn.
  • Endorsements reflecting mentorship, collaboration, and emergent potential can unlock early discovery and better matching in hiring and funding.
  • Building a comprehensive reputation graph involves aggregating ephemeral social signals, endorsements, and professional relationships.
  • Long-term, positive early endorsements can significantly impact an individual's career trajectory and opportunities.
  • Effective reputation systems should democratize recognition and help reveal the hidden contributions of lesser-known talent.
  • There is a significant opportunity to improve professional networking platforms by integrating nuanced signals and reducing switching costs.

Summary

The Importance of Predictive Talent Identification and Network Effects

The episode opens with the hosts emphasizing that the most crucial skill in Silicon Valley, and perhaps in the world, is the ability to identify promising opportunities before they become obvious to the market. This includes recognizing talented individuals and understanding their potential prior to public endorsements or accomplishments. The conversation highlights how reputation and social signals—like who follows whom or who endorses whom—serve as powerful indicators of ability and future success. The hosts argue that Silicon Valley’s meritocratic nature is driven by these early signals, which often come from trusted peers and mentors. They discuss the challenge of matching the right needs with the right skills at the right time and suggest that a system of transparent reputation signals could help discover talent earlier. The episode stresses the importance of these signals in facilitating faster hiring, investing, and collaboration, especially for emerging talent and under-the-radar performers.

Introducing Cosign and the Concept of Professional Reputation

The conversation transitions to the launch of Cosign, a new product designed to capture and surface professional reputation through endorsements and signals that are more durable and granular than traditional profiles. Co-founders Josh Elman, Olivia Moore, and David Booth explain that Cosign aims to make these human signals—such as mentorship influence or who you trust to build companies—more visible. They discuss how existing platforms like LinkedIn, AngelList, and Twitter focus on contact networks or fleeting social posts, but often lack the deep context around relationships, contributions, or endorsements that truly reflect professional reputation. The team sees Cosign as a way to make these signals more legible, helping talented individuals get discovered earlier and facilitating better matching of talent, collaborators, and investors based on trust and proven ability.

The Power of Endorsements and Reputation as Signals

The hosts explore the idea that endorsements function as implicit peer-to-peer credentials—public signals that can open doors just as much as education or traditional resumes. They emphasize that who follows you or endorses you often carries more weight than where you went to school. The creators of Cosign want to gather meaningful endorsements that answer questions like: Who shaped your career? Who would you work with anywhere? Who are the future stars to watch? They describe how these signals can be used to identify talent early, facilitate better hiring, funding, and collaboration, and to surface hidden reputation that may not be visible through conventional profiles. The goal is to make reputation more durable and accessible across time.

Building the Reputation Graph and Collecting Granular Signals

This segment discusses how Cosign intends to build a comprehensive reputation graph by collecting granular signals—detailed endorsements, mentorship relationships, and mutual respect—beyond simple connections. The hosts explain how current platforms like LinkedIn treat all connections equally, lacking the nuance needed to assess relationship strength or relevance. They envision a system where professionals can co-sign each other's skills, mentorship roles, or emergent potential, creating a richer, more accurate map of trust within the community. They also talk about the importance of capturing ephemeral social media moments, such as fundraising announcements or key career transitions, to build a more durable reputation profile. AI plays a role in aggregating and structuring this information to make it actionable.

The Long-Term Value of Personal and Professional Co-Signs

The hosts delve into the strategic importance of co-signs and reputation in Silicon Valley’s meritocracy. They highlight stories of influential endorsements—like Paul Graham’s backing of entrepreneurs—that can propel careers and legitimize talent rapidly. The episode advocates for a long-term view of reputation, suggesting that early endorsements and positive signals can have lasting impacts, such as future funding rounds, hiring decisions, or partnership opportunities. The conversation underscores that making these signals more legible and accessible can democratize opportunities and allow talented individuals, especially those who are lesser-known, to gain recognition and carry their behind-the-scenes contributions into new roles.

Future Opportunities and the Vision for a Better Professional Network

Finally, the episode explores the potential for Cosign to evolve from a niche Silicon Valley tool into a global and multi-industry platform. They discuss how current networks like LinkedIn have high switching costs and treat all connections equally, which limits nuanced reputation assessment. The hosts see a big opportunity for other specialized communities and niches to adopt similar signals, improving how everyone from engineers to founders builds their career reputation. They emphasize that Cosign's open, collaborative approach invites community input and evolution, aiming to create a more truthful, celebratory, and functional representation of professional achievements and relationships. AI’s role in aggregating and structuring this information—making reputation durable—is a key part of this vision.

Sponsors

  • a16z · Thanks to our sponsor a16z for supporting this episode. For more information, visit a16z.com/disclosures.

Show notes

a16z’s Erik Torenberg sits down with Josh Elman, Olivia Moore, and David Booth to introduce Cosign, a new product built around professional reputation and the people, companies, and products you’re willing to put your name behind.

They unpack a simple idea at the heart of Silicon Valley: some of the most valuable professional signals aren’t credentials, but who believes in you. From the mentor who shaped your career to the colleague you’d work with anywhere or the young builder you think everyone should be watching, Cosign is an attempt to make those signals more visible and durable.

They also discuss why human endorsements may become more valuable as AI makes outreach and information abundant, what existing professional networks get right and miss, and how making reputation more legible could help talented people get discovered earlier, find collaborators, and carry the work they’ve done behind the scenes into whatever they do next.


Resources:

Follow Josh Elman on X: https://x.com/joshelman

Follow Olivia Moore on X: https://x.com/omooretweets

Follow David Booth on X: https://x.com/david__booth

Follow Cosign: https://x.com/cosign_build

Read more about Cosign: https://www.a16z.news/how-silicon-valley-knows-its-people

Stay Updated:

Find a16z on YouTube: YouTube

Find a16z on X

Find a16z on LinkedIn

Listen to the a16z Show on Spotify

Listen to the a16z Show on Apple Podcasts

Follow our host: https://twitter.com/eriktorenberg

Please note that the content here is for informational purposes only; should NOT be taken as legal, business, tax, or investment advice or be used to evaluate any investment or security; and is not directed at any investors or potential investors in any a16z fund. a16z and its affiliates may maintain investments in the companies discussed. For more details please see a16z.com/disclosures.


Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Follow this show on AudioBrevity and new episodes get summarized for you. Create a free account

Couldn't load the audio. A blocker may be stopping the show's tracking links. Open the file