Castle Island Ventures

Yellow Card Financial, LLC operates an online cryptocurrency trading platform that facilitates the buying and selling of Bitcoin and other cryptocurrencies without the need for a bank account. Founded in 2016 and headquartered in Chamblee, Georgia, the company offers a range of services including over-the-counter cryptocurrency trading, payment solutions, and currency exchange. Additionally, Yellow Card provides gift cards for cryptocurrency, aiming to transform the traditional remittance market in Nigeria and other countries. The company also has physical locations in Nigeria, Tanzania, Cameroon, Kenya, and South Africa, enhancing its accessibility for customers seeking to engage in cryptocurrency transactions.

The internet is fundamentally broken. It's because of monetization. “Show me the incentives and I'll show you the outcome.” Our mission is to remonetize the web by enabling value for value monetary exchanges between pubs/creators/orgs and their users. A new business model for the open internet. We are unlocking this with friction-minimized streaming payments that are no/low cost, instantly settled, trust-minimized. It is built on the best global digital monetary network ever conceived, Bitcoin. Enabled by Lightning Network. Most users don't need to know this or be a Bitcoiner. Over time we suspect many will.

Developer of a Bitcoin infrastructure platform intended to provide proof-of-assets services for Bitcoin investors. The company's platform helps to bridge the gap between bitcoin investors and traditional lending institutions, enabling investors to build a bitcoin global standard for money by providing proof-of-ownership of sufficient funds.

Eaglebrook Advisors is a crypto-focused investment firm that provides financial advisors with simple, secure and compliant access to bitcoin through the Eaglebrook Bitcoin SMA

Casa offers a secure storage solution for consumers and companies to safely store their digital wealth. Casa helps users manage their private keys, through the multi-location security model that removes single points of failure and protects users from theft, accidents, and disasters, providing them with the tools for securing their digital lives.

Yellow Card Financial, LLC operates an online cryptocurrency trading platform that facilitates the buying and selling of Bitcoin and other cryptocurrencies without the need for a bank account. Founded in 2016 and headquartered in Chamblee, Georgia, the company offers a range of services including over-the-counter cryptocurrency trading, payment solutions, and currency exchange. Additionally, Yellow Card provides gift cards for cryptocurrency, aiming to transform the traditional remittance market in Nigeria and other countries. The company also has physical locations in Nigeria, Tanzania, Cameroon, Kenya, and South Africa, enhancing its accessibility for customers seeking to engage in cryptocurrency transactions.

Developer of a mobile cryptocurrency application designed to create convenience for the crypto market. The company's application provides all the features of a crypto exchange platform and gives access to different financial services and the opportunity to safely buy, sell, manage, and utilize blockchain-based assets, enabling crypto owners to accelerate the transition towards an open financial system.

Developer of a Bitcoin infrastructure platform intended to provide proof-of-assets services for Bitcoin investors. The company's platform helps to bridge the gap between bitcoin investors and traditional lending institutions, enabling investors to build a bitcoin global standard for money by providing proof-of-ownership of sufficient funds.

Developer of a mobile cryptocurrency application designed to create convenience for the crypto market. The company's application provides all the features of a crypto exchange platform and gives access to different financial services and the opportunity to safely buy, sell, manage, and utilize blockchain-based assets, enabling crypto owners to accelerate the transition towards an open financial system.

The internet is fundamentally broken. It's because of monetization. “Show me the incentives and I'll show you the outcome.” Our mission is to remonetize the web by enabling value for value monetary exchanges between pubs/creators/orgs and their users. A new business model for the open internet. We are unlocking this with friction-minimized streaming payments that are no/low cost, instantly settled, trust-minimized. It is built on the best global digital monetary network ever conceived, Bitcoin. Enabled by Lightning Network. Most users don't need to know this or be a Bitcoiner. Over time we suspect many will.

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.

Casa offers a secure storage solution for consumers and companies to safely store their digital wealth. Casa helps users manage their private keys, through the multi-location security model that removes single points of failure and protects users from theft, accidents, and disasters, providing them with the tools for securing their digital lives.

Valiu Inc. is a fintech company founded in 2018 and headquartered in Bogota, Colombia, that specializes in electronic fund transfer services from Colombia to Venezuela. The company has developed a mobile application designed to facilitate a dollar savings and transfer system, making financial services accessible to all Venezuelans, including migrants and their families. This service is tailored to accommodate users of varying socioeconomic backgrounds and different mobile device capabilities, ensuring that a broad audience can utilize its offerings.

Valiu Inc. is a fintech company founded in 2018 and headquartered in Bogota, Colombia, that specializes in electronic fund transfer services from Colombia to Venezuela. The company has developed a mobile application designed to facilitate a dollar savings and transfer system, making financial services accessible to all Venezuelans, including migrants and their families. This service is tailored to accommodate users of varying socioeconomic backgrounds and different mobile device capabilities, ensuring that a broad audience can utilize its offerings.

BlockFi is a secured non-bank lender that offers USD loans to crypto-asset owners who collateralize the loan with their crypto-assets. Their products bring additional liquidity to the blockchain asset sector and meet the needs of both individuals and institutions holding blockchain assets. BlockFi holds clients' Bitcoin and Ether with a registered custodian and issues loans in USD to their bank accounts. Currently operating in beta launch, lending in 35 US states to retail investors and companies. BlockFi’s mission is to provide liquidity, transparency, and efficiency to digital financial markets by creating products that meet the needs of consumers and corporations across the globe. They leverage a sophisticated infrastructure that integrates with multiple blockchains, they plan to expand their product set based on their retail and institutional client's needs.

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.

Zabo is a financial technology company that integrates traditional banking with cryptocurrency services. It offers a comprehensive banking solution that includes checking and savings accounts, a debit card, and direct deposit capabilities. The platform allows users to easily exchange cryptocurrencies, such as Bitcoin and Ether, directly from their bank accounts. Zabo's application is built on an API framework, enabling seamless connection of cryptocurrency accounts with minimal coding required. Additionally, it supports hardware wallet integration, facilitating the buying, selling, and transferring of cryptocurrencies for its clients.

BlockFi, Inc. is a financial services company focused on providing wealth management products for cryptocurrency investors. Established in 2017 and headquartered in New York, it offers a range of services including the BlockFi Interest Account, which allows clients to earn interest on their holdings of Bitcoin, Ether, and Gemini Dollar. The company also facilitates secured loans in U.S. dollars, backed by clients' cryptocurrency assets, thereby enhancing liquidity in the blockchain asset market. In addition to lending and interest-earning accounts, BlockFi provides a trading platform for exchanging various cryptocurrency pairs and offers services tailored for institutional clients. By holding clients' digital assets with a registered custodian, BlockFi aims to deliver transparency and efficiency in digital financial markets. The company's mission is to address the evolving needs of both individual and institutional investors in the cryptocurrency space.