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Notebook Labs

DefunctYC S22

San Francisco, US · Founded 2022 · 3 employees · 7 known investors

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Notebook Labs provides zero-knowledge identity verification for Web3, allowing users to prove personhood and aggregate credentials across wallets while maintaining anonymity. The service helps DeFi protocols, DAOs, and communities prevent fraud through Sybil resistance and enable lending protocols to assess creditworthiness.

Also known as Notebook

Crypto & Web3Enterprise SoftwareDeFiCrypto / Web3IdentityUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S22)

Notebook Labs was founded in 2022 by Nathaniel Masfen-Yan, Solal Afota, and Dhruv Mangtani.

NMNathaniel Masfen-Yan
Nathaniel Masfen-YanCo-Founder2022–2024Nathaniel completed graduate-level cryptography coursework at Stanford and has a background in mathematics and theoretical computer science, including competition experience in the International Mathematical Olympiad.
SASolal Afota
Solal AfotaCo-Founder2022–2024Solal Afota has a background in mathematics and theoretical computer science, and previously competed internationally on the French mathematics team. He focuses on blockchain infrastructure, cryptography, and identity systems.
DMDhruv Mangtani
Dhruv MangtaniCo-Founder2022–2023Dhruv Mangtani studied physics and mathematics at Stanford and theoretical physics at Caltech, with research experience in AutoML at Berkeley's RISELab. He previously founded Maniac, Inc (a16z Speedrun 005) and is currently Co-Founder and CEO of Notebook Labs (YC S22).

Investors · 7

Abstract VenturesreportedSan Francisco · $250K – $750K

How we know: funding news · Not right? Tell us

Bain Capital CryptoreportedSan Francisco

How we know: funding news · press coverage · Not right? Tell us

NFXreportedSan Francisco · $250K – $5M

How we know: funding news · Y Combinator's founder network · Not right? Tell us

PioneerreportedToronto, Ontario

How we know: Y Combinator's founder network · Not right? Tell us

Soma CapitalreportedSacramento · $100K – $300K

How we know: funding news · Not right? Tell us

Very Serious VenturesreportedLynnwood

How we know: funding news · Not right? Tell us

Funding

SEC filings, press & company announcements

$3.3M disclosed across 1 of 2 rounds · 2022

  • $3.3MraisedOct 2022 · 3 sources
    Source ↗
  • Undisclosed amountSeed FundingOct 2022 · 2 sources
    Source ↗

Source: company announcements and press reports — follow each round's link for the claim.

Related companies · 5

Spruce SystemsSpruceID provides digital identity systems for governments and regulated industries, enabling secure verification and authentication across legacy and modern infrastructure. The company specializes in integrating identity solutions with existing workflows, using open standards to ensure interoperability and long-term flexibility.
PayfuraPayFura provides SDK and APIs that enable exchanges, wallets, and NFT marketplaces to offer fiat-to-crypto conversion services across 130+ countries. The company allows developers to embed payment widgets or build custom experiences for users to purchase cryptocurrency using cards and local payment methods.
EthosXEthosX is a blockchain-based derivatives trading platform that connects traditional finance and crypto markets, offering perpetual options, RWAs, and exotic derivatives with high leverage and transparent on-chain settlement. The platform serves both retail and professional traders seeking direct market access without intermediaries.
CashmereCashmere provides a multi-signature Solana wallet that allows enterprises and startups to manage cryptocurrency holdings across multiple authorized signers rather than concentrating control in a single account.
CypherCypher provides a non-custodial crypto card and payment protocol that enables users to spend cryptocurrencies and stablecoins in everyday life with in-app swaps and cross-chain bridges. The product serves cryptocurrency users seeking simplified access to real-world spending without the friction of traditional platforms.

Companies working in the same space as Notebook Labs.

Legal entities · 1

corporate structure
Notebook Labs Ltd.

In the news

🔑 Notebook Labs: Anonymous, Accountable, Self-Sovereign Identityycombinator.com · Aug 2022

Frequently asked questions

What does Notebook Labs do?
Notebook Labs provides zero-knowledge identity verification for Web3, allowing users to prove personhood and aggregate credentials across wallets while maintaining anonymity. The service helps DeFi protocols, DAOs, and communities prevent fraud through Sybil resistance and enable lending protocols to assess creditworthiness.
Who founded Notebook Labs?
Notebook Labs was founded by Nathaniel Masfen-Yan, Solal Afota, Dhruv Mangtani in 2022.
Who are Notebook Labs's investors?
Notebook Labs's investors include Y Combinator, Abstract Ventures, Bain Capital Crypto, NFX, Pioneer, Soma Capital, Very Serious Ventures.
How much funding has Notebook Labs raised?
Notebook Labs has disclosed $3.3M raised across 1 of its 2 known rounds.
Where is Notebook Labs headquartered?
Notebook Labs is headquartered in San Francisco, US.