Castle Island Ventures

Hata is a regulated cryptocurrency trading platform based in Kuala Lumpur, Malaysia, facilitating transactions between businesses and consumers using fiat currencies such as the US Dollar and Malaysian Ringgit. The company is committed to providing a secure and user-friendly environment for accessing cryptocurrencies, ensuring compliance with regulations set by the Securities Commission of Malaysia and the Labuan Financial Services Authority. Hata employs a multi-party computation protocol to enhance the safety of funds, thereby fostering investor confidence. Through its reliable services, Hata aims to make cryptocurrency accessible to all, reflecting its vision of promoting safe and effortless engagement with digital assets.

Yellow Card is a financial technology company that operates an online cryptocurrency trading platform, facilitating secure and cost-effective transactions across Africa. It specializes in providing on/off ramp services for stablecoins like USDT, USDC, and PYUSD, enabling users to buy and sell these coins using their local currencies. The company partners with local merchants and vendors to sell vouchers that can be redeemed for cryptocurrency, simplifying the money transfer process and promoting e-commerce participation. As of 2021, Yellow Card has facilitated over US$3 billion in transactions across 20 African countries, operating in the United States, Nigeria, Tanzania, Cameroon, Kenya, and South Africa.

Alkimiya Protocol is a developer of an open-source, permissionless platform that focuses on creating financial instruments backed by actual hash power production. The protocol utilizes smart contracts to enable miners to sell their future production rewards for a predetermined amount. This innovation allows users to design and deploy hash power-backed financial instruments from any location, leveraging the latest web and mobile technologies to generate revenue. By facilitating a new way for miners to monetize their production, Alkimiya Protocol aims to enhance the financial landscape within the cryptocurrency sector.

Kollider develops tools and services designed to enhance access to financial markets through the use of Bitcoin's Lightning Network. The company offers an online trading platform that simplifies the buying and selling of cryptocurrencies, allowing users to open and close positions directly from their digital wallets. This streamlined approach aims to empower crypto traders by improving their return on investment and making trading more accessible across borders.

Yellow Card is a financial technology company that operates an online cryptocurrency trading platform, facilitating secure and cost-effective transactions across Africa. It specializes in providing on/off ramp services for stablecoins like USDT, USDC, and PYUSD, enabling users to buy and sell these coins using their local currencies. The company partners with local merchants and vendors to sell vouchers that can be redeemed for cryptocurrency, simplifying the money transfer process and promoting e-commerce participation. As of 2021, Yellow Card has facilitated over US$3 billion in transactions across 20 African countries, operating in the United States, Nigeria, Tanzania, Cameroon, Kenya, and South Africa.

Evaluate.xyz is a platform designed for analyzing, tracking, and discovering non-fungible tokens (NFTs), established in 2021 and based in Cambridge, Massachusetts. The platform facilitates the buying, selling, and analysis of digital collectibles, providing users with tools to navigate the NFT market effectively. It features secure trading lobbies that allow for real-time exchanges and communication between collectors, enhancing the trading experience. By simplifying the decision-making process, Evaluate.xyz aims to empower users to make informed choices regarding their NFT transactions.

Kinetic is a company currently operating in stealth mode, focusing on the development of a multi-chain NFT aggregator and trading platform tailored for the cryptocurrency market. Its platform aims to enhance the trading experience by consolidating cross-market visibility, allowing users to access a wide range of NFT transactions. Additionally, Kinetic provides personalized data feeds and predictive insights, which help users make informed decisions and achieve clarity in their trading activities.

Yellow Card is a financial technology company that operates an online cryptocurrency trading platform, facilitating secure and cost-effective transactions across Africa. It specializes in providing on/off ramp services for stablecoins like USDT, USDC, and PYUSD, enabling users to buy and sell these coins using their local currencies. The company partners with local merchants and vendors to sell vouchers that can be redeemed for cryptocurrency, simplifying the money transfer process and promoting e-commerce participation. As of 2021, Yellow Card has facilitated over US$3 billion in transactions across 20 African countries, operating in the United States, Nigeria, Tanzania, Cameroon, Kenya, and South Africa.

Pintu is a cryptocurrency platform based in Jakarta, Indonesia, established in 2020. The company offers a mobile application that facilitates the buying, selling, and management of Bitcoin and other blockchain-based assets. Its platform provides users with a convenient way to access various financial services, allowing them to engage with the cryptocurrency market easily and securely. By streamlining the process of managing digital assets, Pintu aims to support the transition towards a more open financial system for its users.

Alkimiya Protocol is a developer of an open-source, permissionless platform that focuses on creating financial instruments backed by actual hash power production. The protocol utilizes smart contracts to enable miners to sell their future production rewards for a predetermined amount. This innovation allows users to design and deploy hash power-backed financial instruments from any location, leveraging the latest web and mobile technologies to generate revenue. By facilitating a new way for miners to monetize their production, Alkimiya Protocol aims to enhance the financial landscape within the cryptocurrency sector.

Talos Trading is an institutional technology infrastructure provider based in New York, co-founded in 2018 by Anton Katz and Ethan Feldman. The company specializes in offering a comprehensive crypto trading platform that supports the entire trading lifecycle, including price discovery, clearing, and settlement. Talos Trading provides solutions across spot, futures, and foreign exchange markets, leveraging institutional-grade technology to enable clients to stream real-time and request-for-quote prices. Additionally, the platform includes portfolio accounting tools and facilitates efficient settlement processes, connecting various participants within the crypto ecosystem.

Pintu is a cryptocurrency platform based in Jakarta, Indonesia, established in 2020. The company offers a mobile application that facilitates the buying, selling, and management of Bitcoin and other blockchain-based assets. Its platform provides users with a convenient way to access various financial services, allowing them to engage with the cryptocurrency market easily and securely. By streamlining the process of managing digital assets, Pintu aims to support the transition towards a more open financial system for its users.

Coin Metrics Inc. is a provider of blockchain and cryptocurrency data analytics, based in Cambridge, Massachusetts. Founded in 2017, the company specializes in delivering market and network data, analytics, and research to various industries and institutions involved in crypto-assets. Its offerings include the CM Network Data Pro, which provides comprehensive historical data on top cryptocurrency assets, and the CM Market Data Feed, which standardizes trade, candle, and order book data from multiple exchanges. Additionally, Coin Metrics offers CM Reference Rates, which present fixed asset pricing in U.S. dollars. By focusing on transparency and actionable data, Coin Metrics aims to empower individuals and organizations to make informed financial decisions related to cryptocurrencies.

Evaluate.xyz is a platform designed for analyzing, tracking, and discovering non-fungible tokens (NFTs), established in 2021 and based in Cambridge, Massachusetts. The platform facilitates the buying, selling, and analysis of digital collectibles, providing users with tools to navigate the NFT market effectively. It features secure trading lobbies that allow for real-time exchanges and communication between collectors, enhancing the trading experience. By simplifying the decision-making process, Evaluate.xyz aims to empower users to make informed choices regarding their NFT transactions.

River Financial Inc. is a financial technology company based in San Francisco, California, founded in 2019 by Alexander Leishman and Andrew Benson. The company specializes in providing a platform for individuals and institutions to buy, manage, and sell bitcoin. Its flagship product is a Bitcoin brokerage designed for sophisticated retail investors, offering a high-touch service that prioritizes security and client experience. River Financial's platform includes tools for investment performance, such as cost basis tracking, catering to the needs of its clients in the evolving cryptocurrency market.

DFX Finance is a decentralized finance exchange protocol that specializes in trading non-U.S. dollar stablecoins. The platform facilitates structured trading through an Ethereum-based decentralized exchange, utilizing a bonding curve specifically optimized for fiat-backed stablecoins such as USDC, CADC, EURS, and XSGD. By leveraging real-world foreign exchange price feeds, DFX Finance enables users to engage with decentralized finance applications in a blockchain-driven market, promoting seamless and efficient transactions in a variety of stablecoins.

Talos Trading is an institutional technology infrastructure provider based in New York, co-founded in 2018 by Anton Katz and Ethan Feldman. The company specializes in offering a comprehensive crypto trading platform that supports the entire trading lifecycle, including price discovery, clearing, and settlement. Talos Trading provides solutions across spot, futures, and foreign exchange markets, leveraging institutional-grade technology to enable clients to stream real-time and request-for-quote prices. Additionally, the platform includes portfolio accounting tools and facilitates efficient settlement processes, connecting various participants within the crypto ecosystem.

BlockFi, Inc. is a financial services firm that specializes in providing wealth management products for cryptocurrency investors. Founded in 2017 and headquartered in New York, BlockFi offers various services, including interest-bearing accounts for Bitcoin, Ether, and Gemini Dollar, as well as USD loans secured by clients' crypto assets. The company allows clients to trade cryptocurrency pairs and provides tailored lending solutions for both individual and institutional clients. By facilitating liquidity for blockchain asset holders, BlockFi aims to enhance transparency and efficiency in digital financial markets. The organization employs a robust infrastructure that integrates with multiple blockchains, positioning itself to adapt and expand its product offerings in response to the evolving needs of its users.

River Financial Inc. is a financial technology company based in San Francisco, California, founded in 2019 by Alexander Leishman and Andrew Benson. The company specializes in providing a platform for individuals and institutions to buy, manage, and sell bitcoin. Its flagship product is a Bitcoin brokerage designed for sophisticated retail investors, offering a high-touch service that prioritizes security and client experience. River Financial's platform includes tools for investment performance, such as cost basis tracking, catering to the needs of its clients in the evolving cryptocurrency market.

Coin Metrics Inc. is a provider of blockchain and cryptocurrency data analytics, based in Cambridge, Massachusetts. Founded in 2017, the company specializes in delivering market and network data, analytics, and research to various industries and institutions involved in crypto-assets. Its offerings include the CM Network Data Pro, which provides comprehensive historical data on top cryptocurrency assets, and the CM Market Data Feed, which standardizes trade, candle, and order book data from multiple exchanges. Additionally, Coin Metrics offers CM Reference Rates, which present fixed asset pricing in U.S. dollars. By focusing on transparency and actionable data, Coin Metrics aims to empower individuals and organizations to make informed financial decisions related to cryptocurrencies.

Zabo is a startup focused on providing financial companies with tools to enhance their customers' experience in managing cryptocurrency investments. The company offers an API-based application that allows seamless integration of cryptocurrency accounts into existing financial applications. This service enables clients to gain a comprehensive overview of their crypto assets and facilitates transactions such as buying, selling, or transferring cryptocurrencies. Additionally, Zabo's application supports hardware wallet integration, ensuring a secure and efficient way for users to manage their digital assets.

BlockFi, Inc. is a financial services firm that specializes in providing wealth management products for cryptocurrency investors. Founded in 2017 and headquartered in New York, BlockFi offers various services, including interest-bearing accounts for Bitcoin, Ether, and Gemini Dollar, as well as USD loans secured by clients' crypto assets. The company allows clients to trade cryptocurrency pairs and provides tailored lending solutions for both individual and institutional clients. By facilitating liquidity for blockchain asset holders, BlockFi aims to enhance transparency and efficiency in digital financial markets. The organization employs a robust infrastructure that integrates with multiple blockchains, positioning itself to adapt and expand its product offerings in response to the evolving needs of its users.

Coin Metrics Inc. is a provider of blockchain and cryptocurrency data analytics, based in Cambridge, Massachusetts. Founded in 2017, the company specializes in delivering market and network data, analytics, and research to various industries and institutions involved in crypto-assets. Its offerings include the CM Network Data Pro, which provides comprehensive historical data on top cryptocurrency assets, and the CM Market Data Feed, which standardizes trade, candle, and order book data from multiple exchanges. Additionally, Coin Metrics offers CM Reference Rates, which present fixed asset pricing in U.S. dollars. By focusing on transparency and actionable data, Coin Metrics aims to empower individuals and organizations to make informed financial decisions related to cryptocurrencies.