Fundraising FoxPTB Ventures
Venture capitalNew York · Pre-Seed–Series A
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Investment thesis
PTB Ventures invests in early-stage companies anchored in digital identity, viewing identity as the foundation of trust in networked social and economic communities. The firm believes digital identity is central to secure, inclusive networks and to solving major social problems such as financial fraud and inclusion, security of global communications and IT infrastructure, access to affordable healthcare, and unlocking human capital worldwide. It looks for companies that address a large TAM rooted in a social problem, deliver UX breakthroughs, adopt security models that lower access barriers, reduce transaction costs and risks, create value for multiple network stakeholders, and pursue sustainable, impact-driven business models leveraging connected devices, AI, and blockchain/distributed ledger technology.
Source: firm website, verified Aug 3, 2026.
What they invest in
from 6 of 8 portfolio companiesFintech ×4AI & Machine Learning ×3Cybersecurity ×3SaaS ×2Crypto & Web3 ×1Data & Infrastructure ×1Developer Tools ×1EdTech ×1
HQs:United States×5
Investments · 8 tracked
founders shown can be your intro pathBy year:2019 · 12018 · 12 dated
Callsign builds digital identity, authentication, and fraud-prevention technology that verifies users across web, mobile, and physical interactions using behavioral analysis and machine learning.
AI & Machine LearningCybersecurityFintech
Ian Welch(Founder)Zia Hayat(Founder)
Co-investorsAccelAllegisCyber CapitalNautilus Ventures Management Company (Us), LlcProsperity7 VenturesQBN CapitalSC Ventures+1 more
Element builds a privacy-focused, portable digital identity solution along with KYC and digital onboarding tools and credit risk products, using AI technologies.
AI & Machine LearningCybersecurityFintech
Co-investorsUnicorn Growth Ventures
Austin, US
Tim Gray(Executive Officer, Director)John Christiano(Executive Officer, Director)
BoardAmos Schwartzfarb(Director)
Co-investorsKima VenturesAccion Venture LabFinancial Venture StudioTechstars
FintechInsurTechDenver, US
Co-investorsAmplio VenturesATX Venture PartnersFinancial Venture StudioMatchstick VenturesRestive VenturesTechstars+1 more
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Learning Machine provides blockchain-based digital credentialing solutions that enable organizations in higher education and government to issue, verify, and authenticate digital records securely.
Crypto & Web3Data & InfrastructureEdTechGovTechSaaSNew York, US
Chris Jagers(Executive Officer, Director)Dan Hughes(Executive Officer, Director)David Fields(Director)
Co-investorsLearn CapitalOmidyar Network
Smile ID provides AI-based identity verification using biometrics, device and network intelligence, and document verification against government databases.
AI & Machine LearningCybersecurityDeveloper ToolsFintechSilicon Valley, US
William BaresinMark Straub(Founder & CEO)in
Co-investors500 GlobalBeta.VenturesCRE Venture CapitalFuture AfricaIntercept VenturesLocalGlobe+13 more
ZenBusiness provides an all-in-one platform combining AI-powered guidance (Velo) with customer support to help entrepreneurs start, protect, and grow their businesses through business formations and compliance services.
Enterprise SoftwareFuture of WorkLegalTechSaaSAustin, US
Ross Buhrdorf(Founder)inShanaz Hemmati(Founder)inRafael Lopez(Executive Officer)inKhadijeh Hemmati(Executive Officer)
BoardJC Glancy(Executive Officer, Director)in
Co-investorsAlpha PartnersAlumni VenturesATX Venture PartnersBreyer CapitalCathay InnovationCleveland Avenue+16 more
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
by Rivetz
Exits · 1
1 acquisitionsLearning Machineacq. by Hyland
Frequently asked questions
- How many investments has PTB Ventures made?
- PTB Ventures has 8 tracked investments, 1 of which have exited.
- What stage does PTB Ventures invest at?
- PTB Ventures invests at the Pre-Seed, Seed, Series A stages.
- What sectors does PTB Ventures focus on?
- PTB Ventures focuses on AI & Machine Learning, Crypto & Web3, Cybersecurity, Digital Health, Fintech, Impact & Social Good, IoT.
- Where is PTB Ventures located?
- PTB Ventures is headquartered in New York, US.
- Who does PTB Ventures co-invest with?
- PTB Ventures most often shares deals with Accel, Breyer Capital, Cathay Innovation, among 37 tracked co-investors.
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