# Andreas Antonopoulos

> Andreas Antonopoulos is a seed investor backing macOS and Software. See 2 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Location: San Francisco, United States
- Total investments: 2
- Last investment: May 2022
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/amantonopoulos/
- X (Twitter): https://twitter.com/aantonop?lang=en
- Website: http://antonopoulos.com/
- Facebook: https://www.facebook.com/AndreasMAntonopoulos?fref=ts

Andreas Antonopoulos is a technologist and serial entrepreneur, who works on bitcoin. As an engaging public speaker, teacher, and writer, he makes complex subjects accessible and easy to understand. As an advisor, he helps startups recognize, evaluate, and navigate security and business risks.Andreas Antonopoulos started his first company, anearly BBS and proto-ISP, as a teenager in his home in Greece. After moving to the U.S., he co-founded and managed a technology research company, and in that role advised dozens of Fortune 500 company executives on networking, security, data centers, and cloud computing. More than 200 of his articles on security, cloud computing, and data centers have been published in print and syndicated worldwide. He holds 2 patents in networking and security.In 1990, Andreas Antonopoulos started teaching on various IT topics in private, professional, and academic environments. He is also a public speaker and teacher. In 2014, he was appointed as a teaching fellow with the University of Nicosia, the first university in the world to offer a Masters Degree in Digital Currency. In this role, he helped to develop the curriculum and co-taught the Introduction to Digital Currencies course, offered as a MOOC, through the University.As a bitcoin entrepreneur, Andreas Antonopoulos has founded a number of bitcoin businesses and launched several community open-source projects. He serves as an advisor to several bitcoin and crypto-currency companies. He is an author of articles and blog posts on bitcoin, is a permanent host on the Let’s Talk Bitcoin Podcast, and a frequent speaker at technology and security conferences worldwide.Andreas Antonopoulos earned degrees in computer science, data communications, and distributed systems from University College London, recently ranked in the world’s top 10 universities. He currently resides in San Francisco.

## Contacts

5 contacts available for Andreas Antonopoulos: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/andreas-antonopoulos?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| macOS | 1 | 50% |
| Software | 1 | 50% |
| Blockchain | 1 | 50% |
| Communities | 1 | 50% |
| Cryptocurrency | 1 | 50% |

8 industries tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Singapore | 1 | 50% |
| United States | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Liminal Custody | We are a self custody wallet management solution for digital assets like Bitcoin and Ethereum. | $4.7M | Seed | May 31, 2022 | https://lmnl.app/ |
| Umbrel | Umbrel provides a personal server with a Bitcoin and Lightning node at home. | $3M | Seed | Oct 29, 2021 | https://getumbrel.com |

2 of 2 investments shown.

## Co-investors
- [Nexus Venture Partners](https://shizune.co/investors/profile/nexus-venture-partners) — VC Fund, 2 deals together
- [Vauld](https://shizune.co/investors/profile/bank-of-hodlers) — VC Fund, 1 deal together
- [Better Capital](https://shizune.co/investors/profile/better-capital-e839) — VC Fund, 1 deal together
- [Cadenza Ventures](https://shizune.co/investors/profile/cadenza-capital-management) — VC Fund, 1 deal together
- [CoinDCX](https://shizune.co/investors/profile/coindcx) — VC Fund, 1 deal together
- [CoinDCX Ventures](https://shizune.co/investors/profile/coindcx-ventures) — VC Fund, 1 deal together

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### Similar country
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## FAQ

### What does Andreas Antonopoulos invest in?

Andreas Antonopoulos invests primarily in macOS, Software and Blockchain startups, most often at Seed stage. Most of the 2 investments tracked by Shizune back companies in Singapore. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Andreas Antonopoulos?

Public channels for Andreas Antonopoulos include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### When did Andreas Antonopoulos last invest?

The most recent investment recorded for Andreas Antonopoulos closed in May 2022. Shizune tracks 2 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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