Castle Island Ventures
Explore projects backed by Castle Island Ventures
| # | Project | Round | Date | Raised | Category | Investors |
|---|---|---|---|---|---|---|
1 | Seed | Nov 2025 | - | IdentityInfrastructurePayment | Castle Island VenturesInflectionPlaceholderSeed Club Ventures1kx | |
2 | 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 | |
3 | Strategic | Jul 2025 | $9,500,000 | Bitcoin EcosystemDeFiEthereum EcosystemL2 | Castle Island VenturesCathay Ledger FundRockawayXAsymmetric fundHypersphereIOSG VenturesBankless VenturesSigil FundCMS HoldingsDaedalusAmber GroupSats VenturesZee Prime CapitalNathan McCauley | |
4 | Strategic | Jun 2025 | $4,100,000 | DAppDeFiDerivativesDEXTrading | Castle Island VenturesCompoundFlorin DigitalSigil Fund | |
5 | Unknown | Sep 2025 | - | InfrastructureL1PaymentStablecoin | PayPal Ventures | |
6 | Seed | May 2025 | $9,100,000 | Finance/BankingInfrastructurePayment | HAUN VenturesCastle Island VenturesOak HC/FTMAYA CapitalCoinbase VenturesPaxosBitso | |
7 | Series A | May 2025 | $11,000,000 | Avalanche EcosystemNFTSocial Network | Offline VenturesStrobe Ventures (ex BlockTower Capital)Coinbase VenturesCastle Island VenturesUnusual Ventures | |
8 | Unknown | May 2025 | $6,000,000 | Bitcoin EcosystemData ServiceInfrastructureSecurity | Variant FundQuantonationCastle Island Ventures | |
9 | Seed | Apr 2025 | $6,000,000 | Arbitrum EcosystemAvalanche EcosystemEthereum EcosystemInfrastructurePolygon Ecosystem | Crucible CapitalJump CryptoRW3 VenturesCastle Island VenturesHash3 | |
10 | M&A | Oct 2025 | - | DeFiInfrastructurePaymentStablecoinWallet | modern-treasury |
