Adam Back
Angel Investor
Adam Back is a post-ipo equity investor focused on Bitcoin and Blockchain. Having worked on e-cash protocols since 1995, Adam is an applied cryptographer and inventor of the hashcash proof-of-work and decentralized mining used in Bitcoin.In addition to implementing credlib, he was an e-cash consultant to Nokia and later to Credentica (acquired by Microsoft). Adam was an architect and cryptographer at Zero-KnowledgeSystems working on its Freedom network, a precursor to Tor. He has also consulted for leading security companies, including oneID, Vmware and QWcap. Most recently, Adam co-founded Picorp, which was acquired by EMC and where he was CSO of the company’s consumer division, Decho. Adam holds a Ph.D. in distributed systems and computer science from the University of Exeter.
- Total investments:
- 18
- Last investment:
- Lead investor:
- 56%
Last updated:
For AI agents: llms.txt
Industries Adam Back invests in
Stages Adam Back invests in
Countries Adam Back invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Post-IPO Debt
- $3.3M–$13M
- Post-IPO Equity
- $888k–$24M
Investment Focus
Industry
- Bitcoin 3 (17%)
- Blockchain 2 (11%)
- Video Games 2 (11%)
- Cryptocurrency 2 (11%)
- Information Technology 2 (11%)
Stage
- Post-IPO Equity 4 (22%)
- Funding Round 2 (11%)
- Post-IPO Debt 2 (11%)
- Seed 1 (6%)
- Private Equity 1 (6%)
Country
- United States 2 (11%)
- China 1 (6%)
- France 1 (6%)
- Sweden 1 (6%)
- Taiwan 1 (6%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| The Blockchain Group is a blockchain-powered ecosystem. They enable firms to utilize the ability of distributed energy through their many divisions. They offer to incubate, build, develop operationally, and strategically invest in internet and technology companies. | $8.8M / Post-IPO Equity / Sep 02, 2026 | ||
| Connecting Excellence Group PLC (XCE) is a international executive recruitment firm that has integrated Bitcoin as a central component of its corporate treasury and growth strategy. The company focuses on a dual approach to growth that leverages its human capital and financial strategy. | $888.4K / Post-IPO Equity / Sep 01, 2026 | ||
| The Blockchain Group is a blockchain-powered ecosystem. They enable firms to utilize the ability of distributed energy through their many divisions. They offer to incubate, build, develop operationally, and strategically invest in internet and technology companies. | $24.3M / Post-IPO Equity / Aug 28, 2026 | ||
| The Blockchain Group is a blockchain-powered ecosystem. They enable firms to utilize the ability of distributed energy through their many divisions. They offer to incubate, build, develop operationally, and strategically invest in internet and technology companies. | $17.9M / Post-IPO Equity / May 11, 2026 | ||
| The Blockchain Group is a blockchain-powered ecosystem. They enable firms to utilize the ability of distributed energy through their many divisions. They offer to incubate, build, develop operationally, and strategically invest in internet and technology companies. | $1.3M / Post-IPO Equity / May 04, 2026 | ||
| Connecting Excellence Group PLC (XCE) is a international executive recruitment firm that has integrated Bitcoin as a central component of its corporate treasury and growth strategy. The company focuses on a dual approach to growth that leverages its human capital and financial strategy. | $788.4K / Post-IPO Equity / Apr 23, 2026 | ||
| Resolvr facilitates cross-border reinsurance transactions at 10% of the cost and 5x the speed of traditional payment methods, greatly reducing foreign exchange costs, transaction fees, and administrative back office burden. | Seed / Sep 16, 2025 | ||
| EchoX is a leading Web3 solutions provider in the Asia-Pacific region, dedicated to bridging traditional finance with blockchain innovation. The company specializes in delivering compliant cross-border virtual asset services and comprehensive digital finance tools for financial institutions, enterprises, and high-net-worth individuals. Theseofferings include digital asset management platforms, payment solutions, and web-based applications. With deep expertise in blockchain technology, EchoX continues to expand real-world applications of digital assets, drive fintech innovation, and foster the development of the digital asset ecosystem across APAC. | Sep 04, 2025 | ||
| The Blockchain Group is a blockchain-powered ecosystem. They enable firms to utilize the ability of distributed energy through their many divisions. They offer to incubate, build, develop operationally, and strategically invest in internet and technology companies. | $7M / Post-IPO Equity / Jul 15, 2025 | ||
| The Blockchain Group is a blockchain-powered ecosystem. They enable firms to utilize the ability of distributed energy through their many divisions. They offer to incubate, build, develop operationally, and strategically invest in internet and technology companies. | $4.3M / Post-IPO Equity / Jun 13, 2025 | ||
| See all 18 investments → | |||
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FAQ
What does Adam Back invest in?
Adam Back invests primarily in Bitcoin, Blockchain and Video Games startups, most often at Post-IPO Equity and Funding Round stage. Most of the 18 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does Adam Back invest in?
Adam Back typically joins rounds of $3.3M–$13M at Post-IPO Debt and $888k–$24M at Post-IPO Equity. These are whole funding-round sizes, not Adam Back's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds Adam Back took part in.
How do I contact Adam Back?
Public channels for Adam Back include LinkedIn and X (Twitter). 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 Adam Back last invest?
The most recent investment recorded for Adam Back closed in Sep 2026. Shizune tracks 18 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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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