# Build on Bitcoin

> Build on Bitcoin is a VC fund backing Bitcoin and Cryptocurrency. See 1 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: George Town, Cayman Islands
- Total investments: 1
- Last investment: Dec 2024
- Lead investor: 0%
- Last updated: Aug 2026
- X (Twitter): https://twitter.com/build_on_bob
- Website: https://www.gobob.xyz

Build on Bitcoin is a hybrid Layer-2 network Bitcoin blockchain

## Contacts

5 contacts available for Build on Bitcoin. Shizune tracks 2 team members at Build on Bitcoin. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/build-on-bitcoin?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Bitcoin | 1 | 100% |
| Cryptocurrency | 1 | 100% |
| Financial Services | 1 | 100% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Alexei Zamyatin | Co-Founder & Chief Executive Officer | 0 | https://shizune.co/investors/profile/alexei-zamyatin |
| Dominik Harz | Co-Founder | 0 | https://shizune.co/investors/profile/dominik-harz-9f8a |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Fiamma | Fiamma builds the future of finance and the internet on bitcoin with ZK and BitVM2. | $4M | Seed | Dec 04, 2024 |  |

1 of 1 investments shown.

## Co-investors
- [L2 Iterative Venture](https://shizune.co/investors/profile/l2-iterative-venture) — VC Fund, 2 deals together
- [Astera Ventures](https://shizune.co/investors/profile/astera-ventures) — VC Fund, 1 deal together
- [Chapter One](https://shizune.co/investors/profile/chapter-one-ventures) — VC Fund, 1 deal together
- [Contribution Capital](https://shizune.co/investors/profile/contribution-capital) — VC Fund, 1 deal together
- [Faction](https://shizune.co/investors/profile/faction-0d34) — VC Fund, 1 deal together
- [Founderheads,](https://shizune.co/investors/profile/founderheads) — VC Fund, 1 deal together

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

## FAQ

### What does Build on Bitcoin invest in?

Build on Bitcoin invests primarily in Bitcoin, Cryptocurrency and Financial Services startups, most often at Seed stage. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Build on Bitcoin?

Public channels for Build on Bitcoin include 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.

### Who are the partners at Build on Bitcoin?

The team at Build on Bitcoin includes Alexei Zamyatin (Co-Founder & Chief Executive Officer) and Dominik Harz (Co-Founder). The Team section lists each member with their title, investment count and links.

### 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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