Castrum Capital
Venture capitalIstanbul · Pre-Seed–Seed
Investment thesis
Castrum Capital is a crypto-native, full-stack venture firm that backs early-stage crypto and blockchain projects from inception. Its investment decisions are driven by detailed research into tokenomics, technical architecture, and product design. Beyond capital, the firm operates as an interconnected set of components, each with a dedicated team, providing technical, marketing, community, and partnership support to help portfolio projects succeed. It leverages deep connections across the crypto industry and enterprises worldwide, aiming to mentor and empower founders for long-term gains in the blockchain ecosystem.
Source: firm website, verified Aug 7, 2026.
What they invest in
from 64 of 122 portfolio companiesCrypto & Web3 ×52AI & Machine Learning ×18Fintech ×17Media & Entertainment ×15Gaming ×11Data & Infrastructure ×10Consumer ×5Developer Tools ×5
HQs:United Arab Emirates×3Canada×3United States×3Hong Kong×2Türkiye×2Australia×1
Investments · 122 tracked
founders shown can be your intro pathAn affiliate comparison and review site that ranks offshore online casinos ("pokies") for real-money play targeting Australian players, using a public 7-criteria scoring rubric.
ConsumerGamingMedia & Entertainment
2U2.ai is an AI content generation platform for Web3 communities that creates, remixes and distributes crypto memes.
Dane Elliott(Founder)in
AiTraceRoot (ART) is a BNB Smart Chain-based AI on-chain analytics protocol for wallet profiling, risk monitoring and trading signals.
Altcoinist is a crypto trading bot that uses smart routing (powered by Definitive.fi) to reduce slippage and execution loss when buying and selling tokens across decentralized exchanges.
Crypto & Web3Fintech
Christian Andsberg(Founder)in
Avalon is an AI-powered multiplayer game where players create characters that persist across a shared universe of official and player-built worlds.
AI & Machine LearningCreator EconomyGaming
Co-investorsAndromeda CapitalBixin CapitalBixin VenturesBlack DragonCoinbase VenturesSanctor Capital+4 more
Legend is a managed digital awards service that designs and issues digital trophies, medals and certificates for sports federations.
Bluwhale is a personal finance app that connects a user's bank accounts, savings apps, and crypto wallets into a single profile and generates a financial health score (WhaleScore).
AI & Machine LearningCrypto & Web3Fintech
Co-investorsBrincJoyance PartnersRR2 CapitalSBI Ven Capital
Castrum Social is a social media marketing agency that connects crypto project owners with local influencers, KOLs, and community moderators (on YouTube, Twitch, Telegram, Discord, Instagram, and Twitter) to run localized influencer marketing campaigns.
Crypto & Web3Marketing TechMarketplaces
Castrum is a blockchain ecosystem inspired by Ancient Rome, offering venture capital, a fundraising launchpad, a crypto growth and influencer marketing agency, a gaming guild, and an educational academy for Web3 and crypto projects.
Crypto & Web3GamingMarketing TechMedia & EntertainmentIstanbul, TR
Castrum Legions is a blockchain game guild within the Istanbul-based Castrum ecosystem.
ChainGPT builds AI-powered tools for the Web3 and blockchain space, including a launchpad and incubation lab for crypto projects.
AI & Machine LearningCrypto & Web3
Ilan Rakhmanov(Founder)in
Co-investorsBitDAOCoinvestor VenturesMantle NetworkMapleblock CapitalRana Capital
CoinW is a centralized cryptocurrency exchange offering spot, futures, copy trading and earn products to a global user base.
Cookie3 uses blockchain and analytics to turn on-chain user behavior into marketing insights for brands while maintaining data privacy.
AdTechCrypto & Web3Data & InfrastructureMarketing TechTallinn, EE
Wojciech Piechociński(Founder)Filip Wielanier(Founder)in
Co-investorsAweh Ventures
Cosmoverse is a global events platform that organizes summits bringing together blockchain builders, financial institutions, regulators, and investors to discuss institutional adoption of digital assets.
Crypto & Web3FintechMedia & EntertainmentHong Kong, HK
Cryptorank is a data platform that tracks and publishes information on cryptocurrency funding rounds, project valuations, and investment activity.
Crypto & Web3Data & InfrastructureFintech
Co-investorsChaiTech VenturesDanu VenturesMajinx CapitalZBS CAPITAL
DAOKraft is an AI-powered governance platform that turns DAO proposals into structured, executable governance outcomes and provides analytics for decision-making.
AI & Machine LearningCrypto & Web3SaaS
Datai is a decentralized data infrastructure platform that indexes and enriches real-time blockchain data from multiple chains, using in-house machine learning to label and classify smart contracts and deliver structured, AI-ready on-chain intelligence via APIs.
AI & Machine LearningCrypto & Web3Data & Infrastructure
DATS is a DePIN and blockchain-based cybersecurity platform that lets users contribute their computers' idle resources (bandwidth and CPU) to power distributed security audit and vulnerability detection operations in exchange for tokens.
CleantechCrypto & Web3Cybersecurity
DexCheck is an AI-driven blockchain analytics platform offering trading data, wallet tracking and insights across multiple chains.
A Turkish-language content platform about blockchain technology, offering guides, project overviews, and educational resources for people interested in cryptocurrency.
Crypto & Web3Media & Entertainment
Dyor is a decentralized crypto research, analytics and investing platform with a swipe-to-invest interface for on-chain tokens.
EDCON is a global conference for the Ethereum community, offering sponsorship opportunities and hosted side events such as networking sessions, talks, workshops, and exhibitions.
Crypto & Web3
Entangle is a Web3 interoperability layer providing cross-chain messaging, data feeds and a universal token standard for dApps.
Dubai, AE
Faisal Mehrban(Founder)
Co-investorsBitDAOCogitent VenturesLBANK LabsMantle NetworkRhinevall CapitalSeier Capital
ETH Belgrade is a Web3 and Ethereum event, comprising a conference and a hackathon, aimed at developers, blockchain enthusiasts, and Ethereum community members.
Crypto & Web3Belgrade, RS
ETHToronto is an in-person blockchain and Ethereum education and networking event held in Toronto, featuring speakers, stages, and exhibitor booths, and is run alongside the Blockchain Futurist Conference.
Crypto & Web3Media & EntertainmentToronto, CA
Futurist Conference is a large-scale Web3, blockchain, and AI event held in Canada featuring 250+ speakers, expo booths, and networking events across topics like cryptocurrency, NFTs, DeFi, and DAOs.
AI & Machine LearningCrypto & Web3Media & Entertainment
Everreach Labs is an independent game studio building technology that lets live-stream audiences shape gameplay in real time (Crowdplay) and developing its own console-grade AA titles on top of it.
Creator EconomyGamingMedia & Entertainment
Ethan Cohen(Founder & CEO)
FANS LOVE IT! is a Web3 football and sports conference organizer running fan-engagement events such as NFT award contests.
Organiser of the Future GO Tech Summit, a technology and digital transformation conference held in Istanbul.
Blockchain Futurist Conference is a North American Web3 and AI event featuring speakers, expo booths, networking events, and VIP cabanas focused on blockchain, crypto, AI, NFTs, and DeFi.
AI & Machine LearningCrypto & Web3Media & EntertainmentToronto, CA
Game Factory runs a community, incubation, and acceleration programs for mobile app and game developers, offering resources, events, mentorship, and investor lists.
Creator EconomyGaming
Crypto market maker and hedge fund, shut down in 2025 after a U.S. conviction for wash trading token volumes.
GT AI Fund is a public, fully autonomous trading showcase by GT Protocol in which five frontier AI models (Claude, GPT, Gemini, DeepSeek, and Grok) each manage part of a $50,000 vault trading crypto and stocks with no human portfolio manager.
AI & Machine LearningCrypto & Web3Fintech
Co-investorsBlack DragonMagnus Capital
Havens Compass is a content journal publishing articles and guides on home design, wellness routines, and slow living for people who want to create calmer, more intentional living spaces.
ConsumerMedia & EntertainmentWellness & Fitness
Co-investorsBlack DragonSWGI Ventures (SWISS GEM INVESTMENTS)
Cryptocurrency exchange founded in China in 2013 as Huobi, rebranded HTX in 2023, offering spot, futures and earn products.
Co-investorsMapleblock Capital
InceptionLRT is winding down operations effective December 31, 2025; its web interface will be shut down and withdrawals will remain available through the associated chain's block explorer.
Crypto & Web3
Co-investorsBlack Dragon
InterSwap is an omnichain liquidity layer and automated market maker built on Axelar with unified liquidity.
Co-investorsBlack Dragon
Istanbul Blockchain Week is Turkiye's annual Web3 conference and expo, produced by marketing agency EAK Digital.
Klink is an online rewards platform where users earn cash or crypto by completing partner offers such as trying apps, playing games, taking surveys, and social quests.
AdTechConsumerFintech
Co-investorsTRIVEBlockchain Founders Fund
Kyo Finance is a DeFi protocol offering a cross-chain DEX aggregation and execution layer that routes swaps across multiple liquidity sources and chains for optimized results.
AI & Machine LearningCrypto & Web3Developer Tools
MagicCraft is a game studio behind a live MOBA-style game, offering AI-focused products, optional Web3 features, and builder systems for players and creators.
AI & Machine LearningCrypto & Web3Gaming
Merlin Starter is a blockchain launchpad platform offering token launch services, staking, airdrops, and an AI feature (StarAI), with wallet connection for participation.
Crypto & Web3
Co-investorsBlack DragonCatcherVCMajinx Capital
Metya is a Web3 dating and social app combining SocialFi features with the MePay payment system.
South Korean AI company building a natural-language reasoning engine that encodes language into patented data structures called canonicals.
San Francisco, US
Wendy F(Founder)
Co-investorsProtagonistRR2 CapitalVarys Capital
Co-investorsStartersHub
Nolus is an open-source, on-chain margin and crypto lending protocol that provides transparent margin infrastructure for both retail users and institutions.
Crypto & Web3Fintech
Co-investorsCogitent Ventures
Octavia is a Web3-native AI assistant and local-first autonomous agent platform for research, automation and on-chain actions.
OMNIA builds a multi-chain privacy layer for Web3, offering decentralized RPC gateways that anonymize wallet and dApp traffic, block MEV/front-running via private mempool routing, and strip metadata leakage.
Crypto & Web3CybersecurityData & Infrastructure
Co-investorsBitDAOMantle Network
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
Orbital7 is a developer-tooling suite for Bitcoin-centric networks, with an ORBI token issued on BNB Chain.
Latin America-focused RWA blockchain ecosystem with a CBDC-oriented Layer 2 network, exchange, wallet and PATEX token.
Pilot3 is a non-custodial DeFAI trading hub whose AI agents analyze markets and execute trades across multiple blockchains.
The page presents itself as a software development company building websites, web applications, and mobile apps, but its content is dominated by gambling/slot-style promotional material ("demo hoki", player reviews) inconsistent with a legitimate software firm.
SaaS
Singapore-based Play It Forward DAO operates a play-to-earn gaming guild and the P2E Board guild-management platform.
Port3 Network is a Web3 data network that aggregates and standardizes on-chain and off-chain social data for applications.
Co-investorsAdaverseBitDAOMantle Network
Presail operates a private market platform for Web3, offering automated onchain tools and smart contracts that let projects list tokens and let individuals contribute to, vest, and manage private market investments.
Crypto & Web3FintechSaaS
Co-investorsKraken VenturesSkyfall VenturesSNÖ VenturesTriton Capital
ProBit Global was a cryptocurrency exchange that operated from 2018 to 2026, offering trading of digital assets through its website, mobile app, and API.
Crypto & Web3Fintech
Co-investorsNexus One
QuestN is a Web3 growth and airdrop platform that lets crypto projects create communities and publish quest campaigns using customizable templates with automatic verification.
Crypto & Web3GamingMarketing Tech
Co-investorsBitDAOMantle Network
Renatus.ai offers a local-first AI agent orchestration platform that lets users deploy and manage autonomous AI agents from their own devices, with agents able to connect to crypto wallets, launch their own tokens, and manage their own wallets.
AI & Machine LearningCrypto & Web3Developer Tools
RWADepin Protocol is a Sui-based protocol for tokenizing, trading, and generating yield from real-world assets.
Scale Management operates an e-procurement platform that connects buyers with vetted suppliers, helping organizations across Africa digitize and automate their procurement workflows.
B2B MarketplacesEnterprise SoftwareFintechSaaSNairobi, KE
Marvin Tumbo(Co-Founder / CEO)inBrian Mung'ei(Co-Founder / COO)Comark Maloba(Co-Founder / CTO)
Co-investorsTechstarsRenew CapitalNairobi Business Angel NetworkCrosslink CapitalHAVEN VENTURESKickstart+7 more
AITECH Cloud Network (ACN) is an AI-native ecosystem for running AI in production, offering high-performance compute for training, inference, and rendering alongside an orchestration layer for building and managing AI agents.
AI & Machine LearningCloud ComputingCrypto & Web3Data & Infrastructure
Co-investorsOddiyana VenturesZEMU Venture Capital
Staking Rewards operates an independent rating platform that grades staking infrastructure providers and DeFi yield protocols on a single AAA-to-D scale focused on downside risk.
Crypto & Web3Data & InfrastructureFintech
Co-investorsDigital Currency GroupFenbushi CapitalNxGen1kx
Supra provides blockchain oracle services that deliver data feeds to smart contracts and decentralized applications.
Crypto & Web3Data & InfrastructureDeep TechDeveloper ToolsWashington, US
Jonathan Nelms(Managing Member)
Co-investorsAndromeda CapitalBitDAOCoinbase VenturesCVP NoLimitDeepTech VenturesGhaf Capital Partners+7 more
SyFu is a Web3 project building a non-custodial wallet and GameFi platform that converts users' payment and consumption data into digital assets and NFTs (Soulbound tokens) as proof of economic contribution, forming the basis of a decentralized credit evaluation system.
Crypto & Web3FintechGaming
Naoya Nakajima(VP of Corporate Strategy)Ryohei Takagi(Lead IT Architect)
BoardTaisuke Nakano(Advisor)
Nik Anikin(Founder)in
AI-native, mobile-first Web3 game studio distributing casual games through messaging platforms such as Telegram and LINE.
Tevaera is an onchain gaming platform powered by Teva Protocol, combining tokenized guilds, native games, a market and governance.
Robin Babu(Founder)in
Co-investorsDraper Dragon
Tren Finance is a DeFi lending protocol that uses a network of AI agents (TrenOS) to manage risk, rates and liquidity.
tuNNCay is a crypto content and live-streaming channel active on Binance Live, Telegram and Twitter.
Ultrade is a non-custodial trading platform offering perps, spot, and lending with unified cross-chain margin that keeps assets native across nine chains without bridges or wrapped assets.
Crypto & Web3Fintech
Dan Goldman(Founder)in
WorkX.io is an AI-powered online marketplace that connects job seekers and freelancers with employers and clients across fields such as writing, graphic design, programming, and marketing.
AI & Machine LearningHR TechMarketplaces
Jiajia Huang(Founder)in
Co-investorsBlack Dragon
XYRO is an AI-powered gamified social trading platform on Arbitrum where users forecast crypto prices for USDT rewards.
Co-investorsAweh VenturesZEMU Venture Capital
Portfolio news
latest coverage across their companies
CryptoRank · cryptorank.io · Aug 23, 2026
Avalon · timesnewsgroup.com.au · Jul 29, 2026
Scale · pulse2.com · Jul 19, 2026
Frequently asked questions
- How many investments has Castrum Capital made?
- Castrum Capital has 121 tracked investments.
- What stage does Castrum Capital invest at?
- Castrum Capital invests at the Pre-Seed, Seed stages.
- What sectors does Castrum Capital focus on?
- Castrum Capital focuses on AI & Machine Learning, Crypto & Web3, Gaming.
- Where is Castrum Capital located?
- Castrum Capital is headquartered in Istanbul, TR.
- Who does Castrum Capital co-invest with?
- Castrum Capital most often shares deals with Black Dragon, BitDAO, Mantle Network, among 46 tracked co-investors.
Images
Similar investors
Hoxton Ventures is an early-stage venture capital firm that backs pre-seed and seed companies, often investing before revenue or product and offering hands-on support to founders.
Moonfire Ventures is an early-stage venture capital firm backing founders across AI, enterprise software, fintech, gaming, healthtech and other technology sectors.
OMERS Ventures is a venture capital firm that invests in founders globally, with investment teams based in New York, Palo Alto, and Toronto.
Hustle Fund is an early-stage venture capital firm that invests quickly in startups, offering capital along with educational programs and mentorship. It also runs an angel investing community that lets members invest alongside the fund.
Samsung Next is the venture investing arm that backs early-stage founders building bold, ambitious technology companies.