Founder Directory
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Founders13
Known for these resultsRole15%Role is parsed from founder titles in yc.db. Known for 15% of these rows — the rest have no title at all, mostly 2019–2023. Those rows stay in the result and are counted as Unknown, never as No.Bio100%Bio coverage: 100% of these founders have a bio on their YC profile. Every bio-derived facet (ex-company, school, credentials, discipline) is Unknown for the rest.Ex-company31%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 31% of these rows have at least one match.School69%School is matched from bios, case-sensitive for acronyms. 69% of these rows have at least one match.
- Peter VajdaFounder · PerfectBit, Inc.X26B2B · San Francisco
- Seiji YamamotoFounder · PerfectBit, Inc.X26B2B · San Francisco
- Adam WinnifrithFounder/CEO · Evolvere BioSciencesS24Healthcare · Oxford
- Piotr JedryszekFounder/CTO · Evolvere BioSciencesS24Healthcare · Oxford
- Weronika SlesakFounder · Evolvere BioSciencesS24Healthcare · Oxford
- Ahmed Gaber@i_sicoFounder · DiligentS23Fintech · London
- Edoardo Maschio@edoardo_maschioFounder · DiligentS23Fintech · London
- Matt Hardy@mdahardyFounder · Proof of HumanS23B2B · San Francisco
- Mayank Agrawal@mayankagrawalFounder · Proof of HumanS23B2B · San Francisco
- Dhruv MangtaniFounder · Notebook LabsS22B2B · San Francisco
- Nathaniel Masfen-Yan@natrhmyFounder · Notebook LabsS22B2B · San Francisco
- Solal AfotaFounder · Notebook LabsS22B2B · San Francisco
- Alla ArzumanyanFounder · SFA TherapeuticsS21Healthcare · Philadelphia
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Peter VajdaPerfectBit, Inc.FounderSpring 2026B2BSan Francisco, United States2—Seiji YamamotoPerfectBit, Inc.FounderSpring 2026B2BSan Francisco, United States2—Adam WinnifrithEvolvere BioSciencesFounder/CEOSummer 2024HealthcareOxford, United Kingdom3—Piotr JedryszekEvolvere BioSciencesFounder/CTOSummer 2024HealthcareOxford, United Kingdom3—Weronika SlesakEvolvere BioSciencesFounderSummer 2024HealthcareOxford, United Kingdom3—Ahmed GaberDiligentFounderSummer 2023FintechLondon, United Kingdom10https://x.com/i_sicoEdoardo MaschioDiligentFounderSummer 2023FintechLondon, United Kingdom10https://x.com/edoardo_maschioMatt HardyProof of HumanFounderSummer 2023B2BSan Francisco, United States4https://x.com/mdahardyMayank AgrawalProof of HumanFounderSummer 2023B2BSan Francisco, United States4https://x.com/mayankagrawalDhruv MangtaniNotebook LabsFounderSummer 2022B2BSan Francisco, United States3—Nathaniel Masfen-YanNotebook LabsFounderSummer 2022B2BSan Francisco, United States3https://x.com/natrhmySolal AfotaNotebook LabsFounderSummer 2022B2BSan Francisco, United States3—Alla ArzumanyanSFA TherapeuticsFounderSummer 2021HealthcarePhiladelphia, United States4—
Showing 1–13 of 13 founders
Mayank Agrawal
Founder·Proof of Human
PRIMARY INFO
RoleFounder· not in title
Team size4
BatchSummer 2023
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
CEO of Proof of Human, building the invisible Turing Test for the Internet. Before Proof of Human, Mayank completed a PhD at Princeton University working at the intersection of cognitive science and artificial intelligence, publishing in high-impact venues including Science, PNAS, and Psychological Review.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
CredentialsPhD
DisciplineResearcherKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
Proof of Human
continuous human verification without CAPTCHAs or user friction
Co-foundersMatt Hardy@mdahardy
