Castle Island Ventures

Bitcoin/fintech-infrastructure VC writing; Nic Carter also publishes independently (separate record if distinct).

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Connections

Highlights

DateEventSource
4 Mar 2026stablecoin payments startup cyclops raises 8 million from castle island ventures f prime and shift4
11 Feb 2026birch hill raises 2 5 million pre seed round led by parafi capital and castle island ventures for institutional onchain credit infrastructure
25 Sept 2025castle island ventures leads 2 8 million pre seed round for liquid staking startup rocksolid
12 Sept 2024survey visa brevan howard castle island ventures stablecoins real world application
19 Jul 2024castle island ventures and rw3 ventures lead 4 million seed round for web3 cloud firm nirvana labs
7 Jul 2022hidden road announces 50 million series a round led by castle island ventures
16 Feb 2022castle island ventures announces new 250 million fund for web3 investments