24:I[19796,["$2","$5"],"ProfileView"] :HL["https://pbs.twimg.com/profile_banners/1217913850453876736/1790348535/1500x500","image",{"fetchPriority":"high","referrerPolicy":"no-referrer"}] :HL["https://pbs.twimg.com/profile_images/2107929966545661952/zlLRGJjO_400x400.jpg","image",{"referrerPolicy":"no-referrer"}] 25:T5b0,"What's more impressive to you: someone who went to Stanford, or someone who is followed by Patrick Collison, Elon Musk, and Marc Andreessen?" Erik Torenberg on the peer-to-peer credential, and why attention from the right people can open more doors than a degree: "My friend David Perell said, 'My Twitter account is more valuable to me than my college education. My Twitter has given me more value to my career and also personally.'" "College is a bundle of education, network, and credential. You learn from having conversations. You meet people and discover people. It's proof of work: Are they interesting? Are they funny? Did they build something cool?" "What's more impressive to you: someone who went to Stanford, or someone who is followed by Patrick Collison, Elon Musk, Marc Andreessen, et cetera? I think most people would say the latter. It's this kind of peer-to-peer credential." "Implicitly, although people often do this explicitly, that is a cosign. It's an endorsement that this person is worth tracking. It's a public signal that this person is worth following." "If you're followed by these people, now your doors are open. People want to read what you say. They want to work with you. They want to invest in you or have you as part of their team." "There's benefit to the receiver but there's also benefit to the giver because if you're the first person to discover someone, that's how Silicon Valley operates." @eriktorenberg26:T654,"What's more impressive to you: someone who went to Stanford, or someone who is followed by Patrick Collison, Elon Musk, and Marc Andreessen?"

Erik Torenberg on the peer-to-peer credential, and why attention from the right people can open more doors than a degree:

"My friend David Perell said, 'My Twitter account is more valuable to me than my college education. My Twitter has given me more value to my career and also personally.'"

"College is a bundle of education, network, and credential. You learn from having conversations. You meet people and discover people. It's proof of work: Are they interesting? Are they funny? Did they build something cool?"

"What's more impressive to you: someone who went to Stanford, or someone who is followed by Patrick Collison, Elon Musk, Marc Andreessen, et cetera? I think most people would say the latter. It's this kind of peer-to-peer credential."

"Implicitly, although people often do this explicitly, that is a cosign. It's an endorsement that this person is worth tracking. It's a public signal that this person is worth following."

"If you're followed by these people, now your doors are open. People want to read what you say. They want to work with you. They want to invest in you or have you as part of their team."

"There's benefit to the receiver but there's also benefit to the giver because if you're the first person to discover someone, that's how Silicon Valley operates."

@eriktorenberg27:T5b0,"What's more impressive to you: someone who went to Stanford, or someone who is followed by Patrick Collison, Elon Musk, and Marc Andreessen?" Erik Torenberg on the peer-to-peer credential, and why attention from the right people can open more doors than a degree: "My friend David Perell said, 'My Twitter account is more valuable to me than my college education. My Twitter has given me more value to my career and also personally.'" "College is a bundle of education, network, and credential. You learn from having conversations. You meet people and discover people. It's proof of work: Are they interesting? Are they funny? Did they build something cool?" "What's more impressive to you: someone who went to Stanford, or someone who is followed by Patrick Collison, Elon Musk, Marc Andreessen, et cetera? I think most people would say the latter. It's this kind of peer-to-peer credential." "Implicitly, although people often do this explicitly, that is a cosign. It's an endorsement that this person is worth tracking. It's a public signal that this person is worth following." "If you're followed by these people, now your doors are open. People want to read what you say. They want to work with you. They want to invest in you or have you as part of their team." "There's benefit to the receiver but there's also benefit to the giver because if you're the first person to discover someone, that's how Silicon Valley operates." @eriktorenberg28:T654,"What's more impressive to you: someone who went to Stanford, or someone who is followed by Patrick Collison, Elon Musk, and Marc Andreessen?"

Erik Torenberg on the peer-to-peer credential, and why attention from the right people can open more doors than a degree:

"My friend David Perell said, 'My Twitter account is more valuable to me than my college education. My Twitter has given me more value to my career and also personally.'"

"College is a bundle of education, network, and credential. You learn from having conversations. You meet people and discover people. It's proof of work: Are they interesting? Are they funny? Did they build something cool?"

"What's more impressive to you: someone who went to Stanford, or someone who is followed by Patrick Collison, Elon Musk, Marc Andreessen, et cetera? I think most people would say the latter. It's this kind of peer-to-peer credential."

"Implicitly, although people often do this explicitly, that is a cosign. It's an endorsement that this person is worth tracking. It's a public signal that this person is worth following."

"If you're followed by these people, now your doors are open. People want to read what you say. They want to work with you. They want to invest in you or have you as part of their team."

"There's benefit to the receiver but there's also benefit to the giver because if you're the first person to discover someone, that's how Silicon Valley operates."

@eriktorenberg29:T428,Excited to release Discourse, a tech forum for the modern era.

discourse.cosign.co

Today, the discourse in tech is either free for all (broadcast social networks) or completely private (group chats). There’s no midsize social network where a few thousand tech leaders talk to each other.

We'll have a hybrid model. Some people will have access to post directly, and everyone else's posts will go through a queue. We'll start with ~5,000 white-listed people, and more people who post smart comments will be given direct access over time.

Discourse is built off the @cosign graph and will be embedded into the platform.

We’ve partnered with our favorite monitors to make sense of what’s happening in real time.

P.S. True to form, I actually built a version of this a decade ago called @beondeckdaily, inspired by Hacker News.2a:T428,Excited to release Discourse, a tech forum for the modern era.

discourse.cosign.co

Today, the discourse in tech is either free for all (broadcast social networks) or completely private (group chats). There’s no midsize social network where a few thousand tech leaders talk to each other.

We'll have a hybrid model. Some people will have access to post directly, and everyone else's posts will go through a queue. We'll start with ~5,000 white-listed people, and more people who post smart comments will be given direct access over time.

Discourse is built off the @cosign graph and will be embedded into the platform.

We’ve partnered with our favorite monitors to make sense of what’s happening in real time.

P.S. True to form, I actually built a version of this a decade ago called @beondeckdaily, inspired by Hacker News.2b:T4f6,Excited to introduce @Cosign: the curated professional network for the startup community: Our goal is to create the following: - A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with. - Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch? - Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies. - Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers? - Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides. Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business. In order to join, you need to be cosigned. Or you can apply directly. David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do. No one has really touched LinkedIn in 20 years. Excited to take a swing.2c:T609,Excited to introduce @Cosign: the curated professional network for the startup community: cosign.co

Our goal is to create the following:

- A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with.

- Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch?

- Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies.

- Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers?

- Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides.

Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business.

In order to join, you need to be cosigned. Or you can apply directly.

David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do.

No one has really touched LinkedIn in 20 years. Excited to take a swing.

cosign.co2d:T4f6,Excited to introduce @Cosign: the curated professional network for the startup community: Our goal is to create the following: - A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with. - Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch? - Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies. - Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers? - Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides. Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business. In order to join, you need to be cosigned. Or you can apply directly. David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do. No one has really touched LinkedIn in 20 years. Excited to take a swing.2e:T609,Excited to introduce @Cosign: the curated professional network for the startup community: cosign.co

Our goal is to create the following:

- A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with.

- Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch?

- Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies.

- Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers?

- Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides.

Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business.

In order to join, you need to be cosigned. Or you can apply directly.

David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do.

No one has really touched LinkedIn in 20 years. Excited to take a swing.

cosign.co2f:T4f6,Excited to introduce @Cosign: the curated professional network for the startup community: Our goal is to create the following: - A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with. - Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch? - Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies. - Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers? - Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides. Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business. In order to join, you need to be cosigned. Or you can apply directly. David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do. No one has really touched LinkedIn in 20 years. Excited to take a swing.30:T609,Excited to introduce @Cosign: the curated professional network for the startup community: cosign.co

Our goal is to create the following:

- A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with.

- Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch?

- Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies.

- Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers?

- Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides.

Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business.

In order to join, you need to be cosigned. Or you can apply directly.

David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do.

No one has really touched LinkedIn in 20 years. Excited to take a swing.

cosign.co31:T4f6,Excited to introduce @Cosign: the curated professional network for the startup community: Our goal is to create the following: - A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with. - Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch? - Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies. - Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers? - Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides. Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business. In order to join, you need to be cosigned. Or you can apply directly. David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do. No one has really touched LinkedIn in 20 years. Excited to take a swing.32:T609,Excited to introduce @Cosign: the curated professional network for the startup community: cosign.co

Our goal is to create the following:

- A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with.

- Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch?

- Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies.

- Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers?

- Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides.

Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business.

In order to join, you need to be cosigned. Or you can apply directly.

David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do.

No one has really touched LinkedIn in 20 years. Excited to take a swing.

cosign.co33:T4f6,Excited to introduce @Cosign: the curated professional network for the startup community: Our goal is to create the following: - A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with. - Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch? - Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies. - Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers? - Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides. Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business. In order to join, you need to be cosigned. Or you can apply directly. David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do. No one has really touched LinkedIn in 20 years. Excited to take a swing.34:T609,Excited to introduce @Cosign: the curated professional network for the startup community: cosign.co

Our goal is to create the following:

- A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with.

- Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch?

- Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies.

- Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers?

- Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides.

Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business.

In order to join, you need to be cosigned. Or you can apply directly.

David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do.

No one has really touched LinkedIn in 20 years. Excited to take a swing.

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Who do you have permanent trust, respect, and belief in?","createdAt":"2026-10-07T15:22:28.000Z","author":{"id":"1217913850453876736","handle":"cosign","name":"Cosign","avatar":"https://pbs.twimg.com/profile_images/2107929966545661952/zlLRGJjO_400x400.jpg","banner":"https://pbs.twimg.com/profile_banners/1217913850453876736/1790348535/1500x500","bio":"$undefined","bioHtml":"$undefined","location":"San Francisco","url":{"display":"cosign.co","href":"http://cosign.co"},"verified":true,"verifiedType":"blue","affiliate":"$undefined","followers":7251,"following":2,"posts":39,"likes":200,"mediaCount":15,"listed":"$undefined","joined":"2020-01-16T20:57:51.000Z","protected":false},"likes":32,"replies":6,"reposts":0,"quotes":3,"views":8891,"bookmarks":3,"media":[],"quoted":"$undefined","parent":"$undefined","replyTo":"$undefined","replyToId":"$undefined","conversationId":"2107854078349091288","lang":"en","card":"$undefined","isEdited":false,"sensitive":false},{"id":"2106075264451268893","text":"Steven Sinofsky, who spent over two decades at Microsoft, on how he'd rebuild Office around AI:","html":"Steven Sinofsky, who spent over two decades at Microsoft, on how he'd rebuild Office around AI:","createdAt":"2026-10-02T17:34:06.000Z","author":{"id":"1217913850453876736","handle":"cosign","name":"Cosign","avatar":"https://pbs.twimg.com/profile_images/2107929966545661952/zlLRGJjO_400x400.jpg","banner":"https://pbs.twimg.com/profile_banners/1217913850453876736/1790348535/1500x500","bio":"$undefined","bioHtml":"$undefined","location":"San Francisco","url":{"display":"cosign.co","href":"http://cosign.co"},"verified":true,"verifiedType":"blue","affiliate":"$undefined","followers":7251,"following":2,"posts":39,"likes":200,"mediaCount":15,"listed":"$undefined","joined":"2020-01-16T20:57:51.000Z","protected":false},"likes":16,"replies":0,"reposts":0,"quotes":0,"views":1769,"bookmarks":3,"media":[{"type":"photo","preview":"https://pbs.twimg.com/media/HTpEl2jbMAAzuhc?format=jpg&name=medium","original":"https://pbs.twimg.com/media/HTpEl2jbMAAzuhc?format=jpg&name=orig","width":2150,"height":1106,"alt":"$undefined"}],"quoted":{"id":"2106054187251638744","text":"AMA with @stevesi, happening now on Discourse","html":"AMA with @stevesi, happening now on Discourse

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