Castle Island Ventures

Explore projects backed by Castle Island Ventures

Castle Island Ventures
Fund Name

Castle Island Ventures

Invested Projects

58

#ProjectRoundDateRaisedCategoryInvestors
1
Pre-seed
Sep 2025
$2,800,000
DeFiInsurance
Castle Island VenturesGSR Markets LTDKindred VenturesBlockchain Builders Fund (BBF)IDEO CoLab VenturesStanford Blockchain Accelerator (SBA)Rocket PoolPier TwoChris CableScott KetoCharles Lu
2
Strategic
Jul 2025
$9,500,000
Bitcoin EcosystemDeFiEthereum EcosystemL2
Castle Island VenturesCathay Ledger FundRockawayXAsymmetric fundHypersphereIOSG VenturesBankless VenturesSigil FundCMS HoldingsDaedalusAmber GroupSats VenturesZee Prime CapitalNathan McCauley
3
Unknown
Sep 2025
-
InfrastructureL1PaymentStablecoin
PayPal Ventures
4
Strategic
Jun 2025
$4,100,000
DAppDeFiDerivativesDEXTrading
Castle Island VenturesCompoundFlorin DigitalSigil Fund
5
Series A
May 2025
$11,000,000
Avalanche EcosystemNFTSocial Network
Offline VenturesStrobe Ventures (ex BlockTower Capital)Coinbase VenturesCastle Island VenturesUnusual Ventures
6
Seed
May 2025
$9,100,000
Finance/BankingInfrastructurePayment
HAUN VenturesCastle Island VenturesOak HC/FTMAYA CapitalCoinbase VenturesPaxosBitso
7
Unknown
May 2025
$6,000,000
Bitcoin EcosystemData ServiceInfrastructureSecurity
Variant FundQuantonationCastle Island Ventures
8
Seed
Apr 2025
$6,000,000
Arbitrum EcosystemAvalanche EcosystemEthereum EcosystemInfrastructurePolygon Ecosystem
Crucible CapitalJump CryptoRW3 VenturesCastle Island VenturesHash3
9
Unknown
Apr 2025
$7,000,000
DeFiInfrastructurePaymentStablecoinWallet
Castle Island VenturesArchetypeBankless VenturesVerda VenturesArca Fund
10
Seed
Jan 2025
$3,500,000
InfrastructureMarketplace
Castle Island VenturesLattice FundFactor Capital