Castle Island Ventures
Venture capitalActively deployingBoston · Pre-Seed–Series A · 13 people tracked
Also known as CASTLE ISLAND MANAGEMENT, LLC
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3,907 people in our graph share verified history with the Castle Island Ventures team — schools, employers, funds. One of them is your warm intro.
Investment thesis
Castle Island Ventures invests exclusively in public blockchain technologies, supporting entrepreneurs building the infrastructure and application companies needed to help these protocols reach their potential. The firm targets early-stage companies operating at the intersection of traditional finance and public blockchains, with a focus on accelerating frictionless finance.
Source: firm website, verified Sep 15, 2026.
Team · 13 people
from the firm's website & curated & public directories
What they invest in
from 47 of 65 portfolio companiesCrypto & Web3 ×34Fintech ×33AI & Machine Learning ×12Enterprise Software ×12Data & Infrastructure ×11SaaS ×9Cybersecurity ×7Cloud Computing ×3
HQs:United States×23United Kingdom×1India×1
Who they back
founder profiles across 17 portfolio companiesFounding team size:solo founder×52 founders×93 founders×24+ founders×1
Where their founders studiedfrom 26 founders with education data
Massachusetts Institute of Technology ×5Dartmouth College ×2Harvard Business School ×2IESE Business School ×2Princeton University ×2The University of Hong Kong ×2The Wharton School ×2University of Michigan ×2
What their founders studiedfrom 25 founders with field-of-study data
Computer Science ×10Engineering ×7Business & Management ×3Economics ×3Finance & Accounting ×2
Where their founders worked beforefrom 28 founders with career history
Revolut ×4McKinsey & Company ×3MIT Media Lab ×3Bitwise Asset Management ×2BlockFi ×2
Accelerator rootsportfolio companies that came through a program
2 founders hold a PhD · 3 hold an MBA (of 28 with degree data)
Investments · 65 tracked
founders shown can be your intro pathBy year:2026 · 82025 · 82024 · 82023 · 32022 · 62021 · 42019 · 138 dated
Phylax builds the Credible Layer, a policy engine that lets on-chain protocols declare states they must never reach and enforces circuit breakers that reject transactions crossing those limits.
Crypto & Web3CybersecurityEnterprise Software
Co-investorsBankless VenturesBreedFigmentHash3 CapitalBreed VCFigment Capital+2 more
Sealance builds The Sealance Trust Platform, a compliance and identity-verification system that uses zero-knowledge proofs and applied cryptography to enable privacy while enforcing regulatory compliance for the cryptocurrency industry.
AI & Machine LearningCrypto & Web3CybersecurityFintech
Shlomit Azgad-Tromer(Co-founder)inMatthew Green(Co-founder)inEran Tromer(Co-founder)in
Co-investorsFireblocksRibbit CapitalCoinbase VenturesDigital Currency GroupJump Capital
XFX operates a liquidity layer that provides unified fiat and stablecoin liquidity with intelligent routing and near-instant settlement, letting institutions trade across fiat and stablecoin pairs without pre-positioning capital.
Crypto & Web3Data & InfrastructureFintechMiami, US
Santiago Alvarado(Co-founder & CEO)in
Co-investorsHaun VenturesOak HC/FTCoinbase VenturesMAYA CapitalMAYA Capital Ventures
Coin Metrics provides market and on-chain data, reference rates, and indexes for crypto and digital assets, delivered to institutional investment teams via APIs.
Crypto & Web3Data & InfrastructureFintechBoston, US
BoardMathew S. McDermott(Director)Sean Judge(Director)inMatt Scott Walsh(Director)inBob Davis(Director)in
Board seatNic Carter· per SEC Form D · $6.7M raise · filed Oct 2023
Co-investorsAcrew CapitalCoinbase VenturesCollab+CurrencyCommunitas Capital PartnersDigital Currency GroupDragonfly+3 more
Parry builds integrated mission systems combining software, hardware, and AI-enabled autonomy that operate across platforms and environments without requiring custom integration.
AI & Machine LearningDeep TechDefense TechEnterprise SoftwareRoboticsAlexandria, US
Jon Pilon(Executive Officer)inAydin Mohtashamian(Executive Officer)inJohn D Parkes(Executive Officer, Director)in
BoardRobert Miller(Director)David Gross(Director)
Board seatGus Coldebella· per SEC Form D · $90.7M raise · filed Nov 2024
Co-investorsTeamworthy Ventures
Surus is a financial infrastructure platform offering qualified custody, reserve management, and token issuance for digital asset builders, backed by its own North Carolina-chartered trust company.
Crypto & Web3Data & InfrastructureFintechWashington, US
Bradley Gibson(Chief Technology Officer)inBethany Wheeler(Chief Trust Officer)inJennifer Hoopes(Chief Legal Officer)inRachel Trujillo(Chief Compliance Officer)inPatrick Murck(Executive Officer, Director)in
Board seatNic Carter· per SEC Form D · $10.6M raise · filed Mar 2025
Co-investorsFinancial Venture StudioProtagonistRestive Ventures
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A DeFi protocol creating a marketplace for blockspace.
Co-investorsCoinbase Ventures1kxCircle VenturesDragonflyRobot VenturesTribe Capital
Alpen Labs builds a Bitcoin layer-2 network that enables financial applications through a ZK rollup with optimistic bridge architecture.
Crypto & Web3FintechNew York City, US
Abishkar Chhetri(Founder)inPramod Kandel(Founder)inSimanta Gautam(Founder)inJohn LightinTrey Del BonisLiam Eagen
Co-investorsHivemind Ventures, LlcLaunchpad CapitalMirana VenturesResolute VenturesSTILLMARKAsymmetric+3 more
Andrena is a wireless Internet service provider that delivers high-speed connectivity to multi-tenant buildings and households using wireless technology beamed to building roofs, then distributed wirelessly to units.
CleantechCloud ComputingNew Jersey, US
Neil Chatterjee(Founder)inJames Smits(Founder)in
Co-investors645 VenturesAfore CapitalBollinger Investment GroupCalm VenturesChaos VenturesChapter One+7 more
Modern Treasury provides a payment infrastructure platform that enables companies to launch multi-rail payment products supporting both fiat and stablecoins through a single API.
Cloud ComputingCrypto & Web3Data & InfrastructureFintechSaaS
Co-investorsArca FundsArchetypeBlocktower CapitalEniac VenturesSoma Capital
Arch operates an automated crypto lending platform that offers Bitcoin-backed loans, allowing investors to configure and receive funding within minutes.
Crypto & Web3FintechNew York, US
Dhruv Patel(CEO & Co-founder)inHimanshu Sahay(CTO & Co-founder)in
Co-investorsFormus CapitalFour Acres CapitalPICUS CAPITAL
ARQ Finance (formerly DolarApp) is a digital financial platform that enables currency exchange to digital dollars and euros, international payments, and investment access to global markets.
Crypto & Web3FintechLondon, GB
Fernando Terrés(CEO and co-founder)inZach Garman(Founder)inAlvaro Correa(Founder)inÁlvaro Correa Gallardo(Founder)in
Co-investorsFounders FundSequoia CapitalY Combinator
Arx develops secure chips that embed blockchain authentication into physical items like apparel, collectibles, and certificates, enabling decentralized provenance verification and digital experiences without centralized servers.
Crypto & Web3Deep TechHardware
Co-investorsInflection.xyzPlaceholder VC1kxPlaceholderSeed Club Ventures
ARx makes a hands-free wearable headset for people with low vision or sight loss, using a camera that streams video in real time to AI-powered visual assistance apps and bone-conduction audio to describe objects, text, and surroundings.
AI & Machine LearningHardwareHealthtech
Co-investors5Lion Ventures1kxPlaceholderSeed Club Ventures
Asymmetry Finance is a decentralized finance protocol that lets users borrow stablecoins (USDaf and AmpUSD) against BTC or stablecoin collateral at customizable fixed interest rates.
Crypto & Web3Fintech
Co-investorsF-Prime CapitalMagnus CapitalSilvermine CapitalAvon VenturesEcco Capitalgmjp+1 more
Atrium is an AI-powered analytics platform that unifies bank filings, real estate lending data, county records, and earnings-call transcripts to provide loan-level intelligence for credit due diligence, CRE and multifamily portfolio exposure analysis, and risk assessment.
AI & Machine LearningData & InfrastructureFintech
Attestiv offers an AI-powered platform that validates digital files—photos, videos, audio, and documents—to detect tampering, deepfakes, and fraud using rules-based and machine learning models, delivered via a dashboard, APIs, and SDKs.
AI & Machine LearningCybersecurityInsurTechLehi, US
Nicos Vekiarides(Executive Officer, Director)inJohn Bates(Executive Officer, Director)inThomas Mark Morley(Executive Officer)Emmanuel Parasirakis(Executive Officer)in
BoardMatthew Walsh(Director)inJason Weiss(Director)in
Co-investorsBlockchain CoinvestorsBorderless VenturePlug and Play Ventures
Babylon Labs develops trustless infrastructure that enables Bitcoin to be used as collateral in decentralized finance and through a Bitcoin staking protocol for blockchain validation.
Crypto & Web3Fintech
Fisher Yu(Founder)in
Co-investorsa16z cryptoAlumni VenturesAndreessen HorowitzBasecamp FundBloccelerate VCBreyer Capital+9 more
Birdai builds tools to measure, verify, and recover value lost between an order and its fill on onchain markets, using a single metric (β) to quantify execution quality.
Crypto & Web3Data & InfrastructureFintech
Kevin FarrellyinGreg ScanloninJames McClain
Co-investorsDepartment of XYZMetalayerVenture Dept.
Bitwise offers professionally managed crypto investment funds and products, including ETFs, separately managed accounts, private funds, and staking.
Crypto & Web3FintechSan Francisco, US
Hong Kim(Executive Officer, Director)inHunter Horsley(Founder & CEO)inKatherine Dowling(Executive Officer)inMatt Hougan(Executive Officer)inTeddy Fusaro(Executive Officer)in
BoardCorey Mulloy(Director)
Co-investorsBlockchain CapitalChorus OneCoinbase VenturesCraft VenturesDria VenturesElectric Capital+6 more
Casa provides self-custody solutions for bitcoin and stablecoins, offering multi-signature security infrastructure for both individual and institutional users.
Crypto & Web3Fintech
Nick Neuman(Founder & CEO)in
Co-investorsChampion Hill VenturesF-Prime CapitalFabric VenturesFulgur VenturesSTILLMARKTioga Capital Partners+4 more
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Coala Pay simplifies cross-border money transfers for humanitarian aid organizations, delivering more local currency than traditional banking rates.
Crypto & Web3FintechImpact & Social GoodSaaS
Co-investorsCV VCLattice CapitalReflexive CapitalCommerce VenturesFactor Capital
Cyclops is a unified crypto and stablecoin platform built specifically for payments companies, combining licensing, custody, compliance, and 24/7 settlement into a single integration.
Crypto & Web3FintechSaaS
Alex Wilson(Founder)in
Co-investorsF-Prime CapitalNava VenturesCircle & Co.Coinbase Ventures
Cyclops Medtech develops a portfolio of vestibular diagnostic and therapy products—including videonystagmography (VNG/VOG), video head impulse testing (vHIT), dynamic visual acuity, stabilometry platforms, VR-based vestibular rehabilitation, and a smart balance board—to diagnose and treat dizziness and balance disorders.
Digital HealthHealthtechMedical Devices
Co-investorsCapria VenturesCircle & Co.Coinbase VenturesNava Ventures
Provides crypto solutions for institutions.
Christopher King(Founder)in
Co-investorsHack VCBrewer Lane VenturesFranklin Templeton
Eaglebrook is a crypto investment platform for wealth managers, offering tax-optimized Bitcoin, Ethereum, and multi-asset separately managed accounts (SMAs) held in segregated accounts at qualified custodians.
Crypto & Web3FintechSaaS
Christopher King(Founder)in
Co-investorsBrewer Lane VenturesF-Prime CapitalAvon VenturesFlyover CapitalFranklin TempletonGemini Frontier Fund+2 more
Erebor is a US national bank in Columbus, Ohio serving AI, crypto, defense and advanced manufacturing companies.
Palmer Luckey(Founder)
Co-investorsAntiArctic DigitalBalerion Space VenturesIneffable VenturesLakeside CapitalLux Capital+12 more
Felix is a remittance service that enables users to send money from the United States to Latin America (Mexico, Guatemala, Honduras, El Salvador, and Dominican Republic) via WhatsApp, with funds delivered to bank accounts, mobile wallets, or cash pickup locations.
B2B MarketplacesFintechSan Francisco, US
Bernardo Garcia(Founder)in
Co-investorsContour Venture PartnersDorm RoomHTwentyMONASHEESQED InvestorsSwitch Ventures+4 more
Groma issues GromaCoin, a blockchain token where each coin is a tokenized share in the Groma Real Estate Trust, backed by income-producing US real estate held in a regulated structure.
Crypto & Web3FintechPropTech
Chris Lehman(Founder)inGrant Fishman(Founder)in
Co-investorsBantam GroupCoinbase VenturesLaunchpad Venture Group
Hoseki provides cryptographic verification of Bitcoin and digital asset holdings, letting holders generate verifiable proofs of ownership and businesses request and verify counterparty holdings without exposing addresses or sensitive data.
Crypto & Web3FintechSaaS
Sam Abbassi(CEO)inCory Wilbur(CTO and Head of Product)in
Co-investorsF-Prime CapitalFulgur VenturesSTILLMARKAvon VenturesTen31
Kintsu is a liquid staking protocol on the Monad blockchain that lets users stake MON tokens and receive sMON liquid staking tokens usable across DeFi for trading, lending, and pooling while earning staking and MEV yield.
Crypto & Web3Fintech
Connor McKenzie(Founder)in
Co-investorsNxGenPragma VenturesReciprocal VenturesBrevan Howard DigitalFinTech Collective
Manetu provides access control and policy enforcement for data, APIs, and AI systems in real time.
AI & Machine LearningCybersecurityData & InfrastructureEnterprise SoftwareRidgewood, US
David Harris(Executive Officer, Director)inMoiz Kohari(Executive Officer, Director)Gregory Haskins(Executive Officer)Richard Hurwitz(Executive Officer)Anand Babu Periasamy(Director)inKurt Dalton(Director)
Meow is a financial technology company offering business banking, corporate cards, global payments, invoicing, and crypto services, including a Commercial Paper Account for earning yield on idle cash.
AI & Machine LearningEnterprise SoftwareFintech
Brandon Arvanaghi(Founder)inBryce Crawford(Cofounder)
Co-investorsAcequia Capital (AceCap)Acrew CapitalAcrylicCoinbase VenturesEarl Grey CapitalFounders Fund+15 more
Mint Songs was a music NFT marketplace for artists, acquired by Napster in February 2023 after winding down operations.
Co-investorsAAF Management Ltd.Coinbase VenturesEast West Ventures EWVFreestyle Capital
Modern Treasury provides a payments infrastructure platform that enables businesses to move and track money across fiat and stablecoin rails through a single API.
Crypto & Web3Developer ToolsEnterprise SoftwareFintechSaaSSan Francisco, US
Matt Marcus(Co-Founder & CEO)inDimitri Dadiomov(Cofounder & CEO)inSam Aarons(Co-Founder & CTO)in
Co-investorsArchetypeArtisanal VenturesCleo CapitalMischiefNewView CapitalQuiet Capital+7 more
Mountain Protocol offers a regulated, enterprise-grade stablecoin product designed to pass the "risk free rate" to stablecoin holders, acting as a bridge between crypto and traditional finance markets.
Crypto & Web3Fintech
Co-investorsCoinbase VenturesDepartment of XYZMulticoin CapitalVenture Dept.Bankless Ventures
Nirvana Labs provides bare-metal cloud compute instances across three families optimized for different workloads, with pricing up to 37% lower than AWS equivalents.
AI & Machine LearningCloud ComputingData & InfrastructureDeep TechDeveloper ToolsEnterprise Software
Co-investorsCrucible CapitalHash3 CapitalLattice CapitalRaptor GroupVarys CapitalJump Crypto+1 more
Notabene provides compliance and regulatory technology for crypto businesses and financial institutions, helping them meet regulatory requirements like the FATF Crypto Travel Rule through real-time screening, sanctions checks, and wallet identification.
Crypto & Web3CybersecurityEnterprise SoftwareFintechNew York City, US
Pelle Braendgaard(CEO/ Co-Founder)inAndres Junge(Founder)inAnia Lipinska(Founder)inAlice Nawfal(Founder)in
BoardMatthew Walsh(Director)Peter Johnson(Director)in
Co-investorsDigital Currency GroupF-Prime CapitalParaFi CapitalSignature VenturesWintermuteY Combinator+9 more
Project Eleven builds post-quantum cryptography and migration tooling for Bitcoin, Ethereum and other digital asset networks.
Co-investorsCoinbase VenturesFin CapitalLattice CapitalQuantonationVariant FundBalaji Srinivasan+1 more
PYOR provides blockchain data analytics for crypto protocols, DAOs, and institutional investors, offering custom dashboards, risk and governance insights, and developer tools.
Crypto & Web3Data & InfrastructureDeveloper Tools
Co-investorsFuture Perfect VenturesHash3 CapitalAntlerCoinbase VenturesForce Ventures
W. Aaron Daniel(Founder)inDave Schwab(Founder)in
Co-investorsDraper AssociatesDraper Dragon
Ripple builds blockchain-based financial infrastructure to enable cross-border value transfer and payment solutions for enterprises, governments, and financial institutions.
Crypto & Web3Enterprise SoftwareFintechSan Francisco, US
Ryan Fugger(Founder)Christian Larsen(Executive Officer, Director, Promoter)David Schwartz(Director)inBradley Garlinghouse(Executive Officer)
BoardYoung Guo(Director)Doug Chertok(Director)
Co-investors500 GlobalAbstract VenturesAurum Venture PartnersAvant Global LLCCamp One VenturesCore Venture Capital+19 more
SatLayer is a Bitcoin restaking protocol that lets holders deposit Bitcoin or liquid staking tokens into vaults to earn rewards and provide shared security for Bitcoin Validated Services (BVSs).
Crypto & Web3Data & InfrastructureFintech
Co-investorsBloccelerate VCHack VCAsymmetricMirana VenturesOKX Ventures
Station70 builds institutional-grade security products for enterprise asset protection, including private key backup and recovery (Bunker) and secrets management (Gatekeeper).
Crypto & Web3CybersecurityEnterprise SoftwareConcord, US
Adam Healy(Founder)inAdam Everspaugh(Founder)in
Co-investorsA100X VenturesMetalayerSCB 10XNotation CapitalSemantic Ventures
Talos provides white-label cryptocurrency trading infrastructure and technology for retail investment platforms and digital asset brokerages.
Crypto & Web3Data & InfrastructureFintechSaaS
Anton Katz(Founder & CEO)in
Co-investors10SQ Capital (TenSquared)a16z cryptoAndreessen HorowitzCoinbase VenturesElefundFin Capital+12 more
Tesser provides stablecoin payment infrastructure for financial institutions, including global stablecoin settlement, off-ramp-as-a-service, and stablecoin payment capabilities with wallet infrastructure, on/off ramps, and compliance tools.
Crypto & Web3Enterprise SoftwareFintechNew York City, US
Geetha Panchapakesan(Founder)in
Co-investorsDigital Currency GroupStrobe Ventures
TRM Labs offers an online certification course on blockchain investigations and crypto forensics for professionals who need to trace cryptocurrency transactions across multiple blockchains.
AI & Machine LearningCrypto & Web3CybersecurityEdTechEnterprise SoftwareFintechGovTechSan Francisco, US
Esteban Castaño(Founder)inRahul Raina(Founder)inSujit Raman(Chief Legal Officer)inAri Redbord(Global Head of Policy)inTom Armstrong(Head of Compliance Advisory)
Co-investorsAlumni VenturesB Capital GroupB4 CapitalBasecamp FundBessemer Venture PartnersGeodesic Capital+12 more
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Valinor Discovery generates patient-derived datasets combining multi-omics and clinical data to enable machine learning applications in drug development.
AI & Machine LearningBiotechMedical Devices
Co-investorsCampus Founders FundHarpoon VenturesMythos Ventures Management, LlcMaven 11
Valinor is a credit institution building infrastructure for "Open Credit," aiming to connect traditional credit markets with onchain finance.
Crypto & Web3FintechNew York, US
Lily Yarborough(Co-Founder and CBO)inConnor Dougherty(Co-Founder and CEO)in
BoardSean Judge(Director)inNazar Khan(Director)
Co-investorsDepartment of XYZMaven 11Venture Dept.
Yellow.ai is an agentic AI platform for customer service automation that uses multi-LLM architecture and conversational data to help enterprises reduce operational costs and improve customer interactions.
AI & Machine LearningEnterprise SoftwareSaaSBangalore, IN
Rashid Khan(Founder)inJaya Kishore Reddy Gollareddy(Founder)inRaghu Ravinutala(Founder)in
Co-investorsSapphire VenturesBlockchain.com VenturesCoinbase VenturesFabric VenturesMoonPayPolychain Capital+2 more
YellowSculpt provides AI-powered 3D character generation software that converts text prompts into fully rigged, animation-ready models for studios and game makers.
AI & Machine LearningGamingPalo Alto, US
Mandeep Waraich(Founder and CEO)inVincent Sitzmann, PhD(Co-founder and Chief Scientist)
Co-investorsAndreessen HorowitzBlockchain.com VenturesCoinbase VenturesFabric VenturesMoonPayPolychain Capital+2 more
Yellow Card is a licensed stablecoin infrastructure provider operating across Africa, offering cryptocurrency and payment services aimed at solving financial, regulatory, and logistical problems in emerging markets.
Crypto & Web3Fintech
Chris Maurice(Co-founder & CEO)inJustin Poiroux(Co-founder & CTO)in
Co-investorsAtlanta Technology AngelsDG Daiwa VenturesFabric VenturesFenbushi CapitalPharsalus CapitalSony Ventures Corporation+3 more
ZenLedger provides tax and accounting software that automates cryptocurrency tax calculations for crypto traders, investors, and tax professionals.
Crypto & Web3FintechSaaSSeattle, US
Patrick Larsen(Founder & CEO)inDaniel Escobar(Chief Technology Officer)in
BoardMark Casady(Director)in
Co-investorsBloccelerate VCBorderless VentureConvergeKing River CapitalOssian CapitalParaFi Capital+9 more
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
Cyclops, Inc.ArcadeArchArnac Software Ltd.AtriumBeamBuild on BitcoinPear ProtocolPhylax SystemsRockSolid NetworkSendblocksTry Your Best
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.
Portfolio news
latest coverage across their companies
Arx · tech.eu · Sep 8, 2026
Erebor · coindesk.com · Aug 11, 2026
Notabene · alleywatch.com · Aug 1, 2026
Casa · kvia.com · Jul 29, 2026
Birdai · finsmes.com · Jul 29, 2026
Phylax Systems · bcointalk.com · Jul 23, 2026
Phylax · bcointalk.com · Jul 23, 2026
TRM Labs · cryptopolitan.com · Jul 18, 2026
Frequently asked questions
- How many investments has Castle Island Ventures made?
- Castle Island Ventures has 65 tracked investments, 2 of which have exited, including 18 dated in the last 24 months.
- What stage does Castle Island Ventures invest at?
- Castle Island Ventures invests at the Pre-Seed, Seed, Series A stages.
- What is Castle Island Ventures's typical check size?
- Castle Island Ventures typically writes checks of $100K – $5M.
- What sectors does Castle Island Ventures focus on?
- Castle Island Ventures focuses on Crypto & Web3, Cybersecurity, Enterprise Software, Fintech.
- Where is Castle Island Ventures located?
- Castle Island Ventures is headquartered in Boston, US.
- Does Castle Island Ventures lead rounds?
- Yes, Castle Island Ventures leads investment rounds.
- Who does Castle Island Ventures co-invest with?
- Castle Island Ventures most often shares deals with Coinbase Ventures, SCB 10X, Y Combinator, among 136 tracked co-investors.
From the blog
visit blog ↗Castle Island Ventures publishes weekly roundups covering developments across crypto markets, including security vulnerabilities (Coldcard exploits, quantum risk), regulatory pressures (CLARITY Act, CBDC bans, SEC enforcement), and infrastructure changes (BitMEX shutdown, blockchain patent acquisitions, tokenized settlement pilots). AI summary
Media · Podcasts & interviews
featuring the teamCan Bitcoin Survive AI & Quantum? with Nic Carter | Galaxy Brains
Galaxy · Nic Carter
The Politics of Post-Quantum Bitcoin | NIC CARTER
Isabel Foxen Duke · Nic Carter
Bitcoin Has 3 Years to Survive the Quantum Threat | Nic Carter
Bankless · Nic Carter
Nic Carter: Quantum Threatens $600B of Bitcoin
Delphi Digital · Nic Carter
Nic Carter - Cryptodollarization: The Emerging Markets Story - TOKEN2049 Singapore 2024
TOKEN2049 · Nic Carter
Will Stablecoins Serve or Subvert US Interests
Messari · Nic Carter
Images
Co-investors · 20
Acrew Capital is a venture capital firm that emphasizes a team-based approach to investing, offering portfolio companies access to its full team.
Hack VC is a venture capital firm investing in early-stage crypto, blockchain infrastructure, decentralized finance, and AI companies.
Robot Ventures is a $75M early-stage crypto fund founded and led by Robert Leshner (Compound) and Tarun Chitra (Gauntlet), who actively run major DeFi companies while managing the fund, giving founders direct access to operators at the center of on-chain markets. The fund specializes in backing highly technical crypto primitives at the pre-seed stage before they become marquee names, leveraging deep quant research expertise to evaluate complex DeFi mechanisms that many generalist VCs struggle to understand.
Stillmark is a venture capital firm that invests in companies building products and infrastructure for a bitcoin-powered future.
Electric Capital is an early-stage venture firm founded in 2018 that backs founders building trust-minimized technologies across AI, crypto, fintech, and related sectors.
Pantera Capital is a blockchain and cryptocurrency-focused investment firm that pioneered early crypto funds in the U.S., offering exposure through venture equity, early-stage tokens, and liquid tokens.
Initialized Capital is a seed-stage venture firm that partners with founders very early — often before product-market fit — providing hands-on support across product, recruiting, go-to-market, PR, and Series A fundraising.
Highland Capital Partners is a venture capital firm with a 39-year history focused on backing entrepreneurs, reporting 200 exits, over 50 IPOs, 40 unicorns, and $7B in assets under management.
AirTree Ventures runs Pathfinders, a free four-week in-person program in Sydney for young builders (high-school graduates up to age 23) to work on a real product, access the AirTree team and founders, and build a peer network.
Champion Hill Ventures is an early-stage venture firm, founded in 2014, that backs founders tackling large, overlooked problems through non-consensus and structurally underserved ideas.
Red Swan Ventures backs founders at the earliest stage, aiming to be a founder's first outside capital, focusing on companies born from platform shifts and cultural insight that serve enduring human needs.
M13 is a venture capital firm that invests in seed and Series A stage software companies.
▶8 more co-investors
CyberstartsPolygonThe Venture CollectiveSolana VenturesShima CapitalBlockchain Founders FundCadenzaLakehouse Venture Partners
Firms observed investing alongside Castle Island Ventures, from public investor directories. Shared companies are the overlap with Castle Island Ventures's recorded portfolio.
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