Organization · Venture Capital
Stillmark
Stillmark is a U.S.-based venture capital firm established in 2019, focusing exclusively on early-stage investments in the Bitcoin ecosystem. The firm supports founders developing technologies and products that align with Bitcoin's core principles.
Overview
What Stillmark does
What Stillmark is
Stillmark is a U.S.-based venture capital firm established in 2019, focusing exclusively on early-stage investments in the Bitcoin ecosystem. The firm supports founders developing technologies and products that align with Bitcoin's core principles.
How it participates in the startup ecosystem
The current public profile supports funder capabilities. Each capability below is shown separately so organization identity and role-specific information do not get conflated.
Operational profile
Organization status and context
Organization status describes the entity itself. Funding and program availability appear within the relevant capability profile.
- Operational status
- Active
- Organization type
- Venture Capital
- Founded
- Founded in 2019
- Approximate age
- About 7 years
- Structured capabilities
- Funder
- Last reviewed
- April 26, 2026
Official channels
Find Stillmark elsewhere
Open the official website or a supported primary organization account.
Capability profile
Stillmark as a funder
Investment thesis
Stillmark backs founders building companies that embody and advance Bitcoin's principles: decentralization, self-custody, fungibility, censorship resistance, open infrastructure, and scalable value transfer.
Focus narrative
Stillmark invests in early-stage companies, specifically at the Pre-seed, Seed, and Series A stages. The firm targets businesses innovating within the Bitcoin space and seeks to partner with founders who are advancing the unique opportunities presented by Bitcoin technology.
Value beyond capital
Stillmark adds value to its portfolio companies through rigorous technical and market research, proprietary ecosystem insights, and long-term partnerships with founders. The firm is willing to engage with founders early in their journey, even before they have incorporated or polished their pitch.
Terms and economics
- Typical check
- $250,000–$3,000,000
Focus and fit
- Stages
- Pre-seed · Seed · Series A
- Regions
- Global
Availability
- Currently deploying
- Yes
Portfolio and track record
- Recorded portfolio count
- 12
Portfolio context
Notable portfolio companies include: Alpen Labs (developing infrastructure for verifiable computation on Bitcoin), Meanwhile (a licensed life insurance company offering BTC-denominated policies), VIDA (operating at the intersection of Bitcoin and telecom), Gridless (focused on Bitcoin mining powered by renewable energy in Africa), Hoseki (a leading proof-of-reserves platform for Bitcoin), IBEX (providing Lightning-as-a-Service infrastructure for enterprises in LATAM), Voltage (offering cloud node hosting for Lightning Network payment technology), and Casa (providing self-custody software and wealth management tools for Bitcoin).
Common questions
What to know about Stillmark
Upseed classifies Stillmark under the Venture Capital organization type. Its current public profile includes funder capabilities.
Source and update disclosure
Know what this page is based on
Source basis
Public organization and program material, official websites, and structured Upseed records.
Last reviewed
April 26, 2026
Known limits
Capability profiles appear only when a structured public profile also contains decision-useful role evidence. Terms and availability can change.
Upseed is an independent guide. It is not affiliated with or endorsed by the organization described on this page.