Kleinblue Capital (0xkb)
Venture capitalPre-SeedβSeed
Investment thesis
Kleinblue Capital is a proprietary early-stage fund operated by experienced web2 and web3 natives who invest as power users, engaging hands-on with portfolio projects through beta testing, code review, and UI/UX work. Alongside investing, the firm runs a web3-native advisory practice covering capital formation, institutional business development, product strategy, protocol design, and security. Its portfolio spans crypto and blockchain infrastructure, DeFi protocols, and analytics, and it maintains diversified exposure to crypto assets via a portfolio of closed and open-end funds employing venture, directional, and delta-neutral strategies.
Source: firm website, verified Aug 3, 2026.
What they invest in
from 3 of 6 portfolio companiesCrypto & Web3 Γ3Fintech Γ3AI & Machine Learning Γ1
Investments Β· 6 tracked
founders shown can be your intro pathOpen, programmable smart contracts platform for decentralized applications with near-instant transaction finality.
Cryptocurrency exchange protocol bridging centralized and decentralized finance.
Varun Kumar(Founder & CEO)Vinod Raghavan(Founder)Victor Ionescu(Founder)in
Co-investorsArrington CapitalBollinger Investment GroupCoinbase VenturesDragonflyElectric CapitalFabric Ventures+15 more
Lido is a liquid staking protocol for Ethereum that allows users to stake ETH and earn rewards while maintaining liquidity through the stETH token.
Crypto & Web3Fintech
Vasily Shapovalov(Founder)
Co-investorsa16z cryptoAegis VentuesAndreessen HorowitzBR CapitalDeepTech VenturesDeFiance Capital+15 more
MUX is a decentralized perpetuals trading aggregator that unifies liquidity from multiple perps protocols and routes trades to the lowest-cost source, offering up to 100x leverage across BTC, ETH, altcoins and meme coins.
Crypto & Web3Fintech
Nansen is a trading platform that combines onchain intelligence and AI to help investors discover trading opportunities, execute trades, and monitor portfolios across multiple blockchain networks and protocols.
AI & Machine LearningCrypto & Web3Fintech
Alex Svanevik(Founder)inEvgeny Medvedev(Founder)in
Co-investorsa16z cryptoAccelAndreessen HorowitzBR CapitalCoinbase VenturesFabric Ventures+6 more
Scalable, interoperable and secure multi-chain network protocol enabling cross-chain registries and computation.
Portfolio news
latest coverage across their companiesNansen Β· financefeeds.com Β· Jun 22, 2026
Frequently asked questions
- How many investments has Kleinblue Capital (0xkb) made?
- Kleinblue Capital (0xkb) has 6 tracked investments.
- What stage does Kleinblue Capital (0xkb) invest at?
- Kleinblue Capital (0xkb) invests at the Pre-Seed, Seed stages.
- What sectors does Kleinblue Capital (0xkb) focus on?
- Kleinblue Capital (0xkb) focuses on Crypto & Web3, Data & Infrastructure, Fintech.
- Who does Kleinblue Capital (0xkb) co-invest with?
- Kleinblue Capital (0xkb) most often shares deals with a16z crypto, Andreessen Horowitz, Coinbase Ventures, among 35 tracked co-investors.
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