Sebastian Blum

Founding Partner, Greenfield
Sebastian Blum splits time between SF and Berlin, combining hands-on company-building and venture roles at T‑Venture with Dedrone security and RF jamming experience, framing blockchain as decentralized infrastructure.
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Sebastian Blum
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Web3 / Crypto
Fintech
Data
Climate
AI
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About Sebastian Blum

Sebastian Blum's interest in decentralized infrastructure grew out of earlier work on security and networking problems, including RF jamming issues he wrote about during his time at Dedrone, and he now frames blockchain as infrastructure without a central point of failure rather than a speculative asset. Splitting his time between San Francisco and Berlin, he brings a background that mixes hands-on company building with more traditional venture experience, including time at Deutsche Telekom's T-Venture and Active Venture Partners.

About their Fund

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Web3 / Crypto, Fintech, Data, Climate, AI
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Greenfield focuses on backing early developer teams building the more open, decentralized side of crypto, leaning into DeFi early under a founder who had previously sold a startup to Opera, investing heavily in Europe (up to 70% of its latest fund), and treating clear rules like MiCA as an advantage rather than a risk. The fund has also built a research-heavy, repeated bet on digital fashion by leading funding rounds for both The Fabricant and DressX, based on the idea that NFTs let people own and resell digital clothing and identity across avatars, while opposing the idea of big tech companies like Apple or Facebook controlling the metaverse and running its own jobs portal to help portfolio companies hire.

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