/Investor DB

Castrum Capital — 2025 Investments

3 investments dated 2025 · listed companies and verified rows first · show all

Magnemagne.ai𝕏Aug 2025

MAGNE builds a 5G Android smartphone with hardware-based security (secure element, trusted execution environment) for private on-device AI workflows and Web3 operations such as wallet, swap, stake, bridge, and asset signing.

Crypto & Web3CybersecurityHardwareHong Kong, HK

Co-investorsTitans Ventures

Metyametya.comOct 2025

Metya is a Web3 dating and social app combining SocialFi features with the MePay payment system.

Co-investorsAlpha Capital

Openverseopenverse.networkin𝕏May 2025

Openverse Network is building blockchain infrastructure for a "value internet," including protocols for cross-chain value transfer, naming, unified identity, inter-blockchain communication, and an EVM-compatible operating system for running public, consortium, and private chains.

Crypto & Web3Data & InfrastructureDeveloper Tools

Co-investorsBright CapitalInnovation Engine

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.