Castle Island Ventures

Founded in 2018, Massachusetts-based Castle Island Ventures was founded in 2018 by Matthew Walsh and Nic Carter.
It is an early-stage venture capital firm focused exclusively on public blockchains, that invests in infrastructure and application companies.
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Most crypto privacy models weaken as blockchain data grows. Encryption-based models like Zcash strengthen. CoinDesk Research maps the five privacy approaches and examines the widening gap.
Why it matters:
As blockchain adoption scales, the metadata available to machine learning models scales with it. Obfuscation-based privacy approaches are structurally degrading as a result. This report provides a comprehensive comparison of all five major crypto privacy architectures and a framework for evaluating which models remain durable as AI capabilities improve.












