# Sadaaki Hirai

> Sadaaki Hirai is a pre-seed investor backing Blockchain and Open Source. See 1 investments, check sizes, portfolio and contact details. Updated Sep 2026.

- Type: Angel Investor
- Total investments: 1
- Last investment: Sep 2019
- Lead investor: 0%
- Last updated: Sep 2026

Sadaaki Hirai is a pre-seed investor focused on Blockchain and Open Source. Sadaaki Hirai

## Contacts

5 contacts available for Sadaaki Hirai: 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/sadaaki-hirai?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Blockchain | 1 | 100% |
| Open Source | 1 | 100% |
| Social Impact | 1 | 100% |
| Cryptocurrency | 1 | 100% |
| Sustainability | 1 | 100% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| FRAME00 | FRAME00 is a blockchain technology startup developing a decentralized funding platform. Their product is an open-source middleware that fairly evaluates any activity and supports sustainability with staking. |  | Pre-Seed | Sep 26, 2019 | https://corp.frame00.com/ |

1 of 1 investments shown.

## Co-investors
- [MIRAISE](https://shizune.co/investors/profile/miraise) — VC Fund, 1 deal together

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### Similar industry
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### Similar country
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## Featured in investor lists
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## FAQ

### What does Sadaaki Hirai invest in?

Sadaaki Hirai invests primarily in Blockchain, Open Source and Social Impact startups, most often at Pre-Seed stage. Most of the 1 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Sadaaki Hirai?

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 Sadaaki Hirai last invest?

The most recent investment recorded for Sadaaki Hirai closed in Sep 2019. Shizune tracks 1 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 Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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