Erik Torenberg launches Cosign, a curated professional network for the startup community

Erik Torenberg and David Booth developed the idea for Cosign seven years ago but shelved it, according to Torenberg, who says they now have the capacity to build it. Cosign is positioned as a community, not a business. Planned features include a startup directory of investors, companies and operators; a career-relationship graph; permanent reputation signals drawn from endorsements on X; discovery tools; and a private intent network that matches two-sided interest in investing, hiring, working together or acquisitions. Membership requires being cosigned or applying directly, with partners including MTSlive and theacademysf.

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