Stillmark is a Bitcoin-focused early-stage venture capital firm founded by Alyse Killeen, who serves as its Founder and Managing Partner. Stillmark's Twitter Score is 26 out of 1000 as of August 2026, ranking #37,886 (top 10%) among 483,944 tracked accounts.
Stillmark was established in 2019 with a mandate centered on backing companies that advance Bitcoin's core principles. The firm describes itself as the first venture capital firm dedicated exclusively to Bitcoin, and it invests at the Pre-seed, Seed, and Series A stages, with typical initial commitments ranging from $250,000 to $3,000,000. Stillmark is currently deploying capital from its second fund, with Vikash Singh serving as a Principal Investor concentrating on Bitcoin and the Lightning Network.
Stillmark's investment focus spans Bitcoin smart-contract infrastructure, mining, Lightning infrastructure, and self-custody solutions. Stillmark's fund portfolio includes Chia Network, Lightning Labs, Casa, Voltage, Hoseki, AMBOSS, IBEX and Gridless. Stillmark has published 90 posts on the platform and has been mentioned by 36 accounts a total of 66 times, reflecting consistent engagement within the Bitcoin investment community.
Who follows Stillmark on X?
The accounts that follow Stillmark include 124 founders, 27 angel investors, 39 influencers and 16 VCs, among them Eric Wall, Tay, Arianna Simpson, Adam Back, Bitcoin Magazine and Andrew Chen.