Ken Seiff
Managing Partner at Blockchange Ventures
Miami Beach, Florida
Ken Seiff, Managing Partner at Blockchange Ventures is an active investor based in Miami Beach, Florida. This profile covers what Ken Seiff backs, at which stage, and how founders can reach out in 2026.
Ken launched Blockchange Ventures, a venture capital firm focusing on early-stage blockchain companies, protocols, and applications.
- Investor type
- VC
- Stages
- SeedSeries AEarly Stage Venture
- Invests in
- Crypto & Web3Developer Tools & Data
- Location
- Miami Beach, Florida
- Typical check
- $500K
How to reach Ken Seiff
Angels and operators like Ken Seiff reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
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About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise.
Frequently Asked Questions
What does Ken Seiff invest in?
Ken Seiff invests in Crypto & Web3 and Developer Tools & Data, typically at Seed, Series A and Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Ken Seiff invest at?
Ken Seiff typically invests at Seed, Series A and Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Ken Seiff's typical check size?
Ken Seiff typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do I contact Ken Seiff?
Unlock Ken Seiff's verified email on Round Funded and send a personalized pitch. We surface only deliverable contacts so your outreach lands.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.