Castle Island Ventures is a venture capital firm based in Boston, Massachusetts, founded in 2018. The firm focuses exclusively on public blockchains, targeting early-stage infrastructure and application companies that are integral to the development of transformative protocols. With a particular emphasis on the financial services and information technology sectors, Castle Island Ventures aims to support innovations that will facilitate services for a future user base of billions. The firm manages Castle Island Ventures II, which typically invests in around 20 startups within the cryptocurrency and blockchain domains.
PYOR has extensive expertise building in crypto and has played major roles in the creation of several large Indian unicorns, as well as extensive experience in global blue chip organisations.
CAT Labs
Pre Seed Round in 2023
CAT Labs is developing cybersecurity and digital asset recovery solutions to assist governments in combating cryptocurrency crime and protecting investors from scams, fraud, and hacking.
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.
Halborn is a leading cybersecurity firm focused on safeguarding blockchain organizations from cyber threats. The company offers a comprehensive suite of products and services aimed at identifying and mitigating vulnerabilities in Web3 applications. This includes advanced penetration testing, security advisory services, DevSecOps automation, and smart contract audits. By continuously assessing critical assets, Halborn ensures ongoing protection and compliance for its clients. The firm is recognized for its commitment to delivering world-class cybersecurity solutions, helping organizations navigate the complexities of digital security in the evolving blockchain landscape.
Operator of a marketplace intended to guarantee product authenticity and allow brands to participate in the upside of secondary transactions. The company embeds near-field communication (NFC) chips into physical products, deepening customer engagement, protecting brand authenticity, and generating incremental revenue, enabling customers to avail digital content and experiences, and brands with insights into customer behavior.
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.
SoundMint is a developer of a generative audiovisual NFT platform that enables musicians to mint unique music NFTs. The platform combines visual elements with musical stems through an algorithm, allowing users to create distinctive digital assets. Additionally, SoundMint provides a dashboard for NFT-holding fans, giving them access to exclusive content from artists. This innovative approach enhances the interaction between musicians and their audience, fostering a deeper connection through unique audiovisual experiences.
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.
Talos Trading, Inc. is a technology provider focused on the institutional trading of digital assets, facilitating a comprehensive trading lifecycle that includes pre-trade price discovery, order routing, execution, and settlement. Founded in 2018 and based in New York, the company offers a platform that connects various participants in the crypto ecosystem, including institutional investors, prime brokers, exchanges, OTC desks, lenders, and custodians. This infrastructure enables clients to efficiently execute, analyze, and settle trades across spot, futures, and foreign exchange markets. Talos Trading's solutions support real-time price streaming, portfolio accounting, and liquidity access, catering to the needs of its diverse clientele in the rapidly evolving digital asset market.
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.
Coin Metrics Inc. is an online publisher specializing in blockchain and cryptocurrency data, offering a range of market and network analytics to various industries. Founded in 2017 and based in Cambridge, Massachusetts, the company provides several key products, including the CM Network Data Pro, which delivers historical crypto network data in a detailed format for institutional clients. Additionally, Coin Metrics offers the CM Market Data Feed, a standardized solution for trade, candle, and order book data from multiple exchanges, and CM Reference Rates, which provides fixed pricing for various assets quoted in U.S. dollars. By focusing on transparent and actionable data, Coin Metrics enables stakeholders to better understand and utilize public crypto networks.
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.
EasyBins simplifies your grocery routine once and for all, so you can focus on the things that matter. We provide a one-stop, single-checkout marketplace of your favorite national and local brands, products, and retailers, delivered twice-daily to your doorstep. Click The Box, Get A Bin.
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.
Notabene, Inc. is a New York-based company that specializes in developing a software as a service (SaaS) platform designed for crypto compliance in the financial industry. Founded in 2020, Notabene enables businesses to adhere to evolving global regulations for cryptocurrency transactions, particularly focusing on the Travel Rule. The company offers a unified API and dashboard that assists compliance officers in managing risks associated with both Travel Rule and non-custodial transactions. By simplifying compliance processes, Notabene enhances transaction confidence for its clients, facilitating increased interaction with a broad network of crypto businesses. This ultimately supports the growth of transaction volumes and fosters business expansion for its customers.
Talos Trading, Inc. is a technology provider focused on the institutional trading of digital assets, facilitating a comprehensive trading lifecycle that includes pre-trade price discovery, order routing, execution, and settlement. Founded in 2018 and based in New York, the company offers a platform that connects various participants in the crypto ecosystem, including institutional investors, prime brokers, exchanges, OTC desks, lenders, and custodians. This infrastructure enables clients to efficiently execute, analyze, and settle trades across spot, futures, and foreign exchange markets. Talos Trading's solutions support real-time price streaming, portfolio accounting, and liquidity access, catering to the needs of its diverse clientele in the rapidly evolving digital asset market.
BlockFi
Series C in 2020
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.
Manetu, Inc. develops a consumer privacy management (CPMSM) platform. It offers The Manetu CPMSM, a platform that acts as an infrastructure for the end-to-end management of the private information to provide the service to the users’ customers. The company’s platform is also used for collaborating with the customers to manage all their sensitive data; enables users’ customers to determine what data they will share and for how long. Manetu, Inc. was incorporated in 2019 and is based in Ridgewood, New Jersey.
Coin Metrics Inc. is an online publisher specializing in blockchain and cryptocurrency data, offering a range of market and network analytics to various industries. Founded in 2017 and based in Cambridge, Massachusetts, the company provides several key products, including the CM Network Data Pro, which delivers historical crypto network data in a detailed format for institutional clients. Additionally, Coin Metrics offers the CM Market Data Feed, a standardized solution for trade, candle, and order book data from multiple exchanges, and CM Reference Rates, which provides fixed pricing for various assets quoted in U.S. dollars. By focusing on transparent and actionable data, Coin Metrics enables stakeholders to better understand and utilize public crypto networks.
Attestiv Inc. is a technology company based in Natick, Massachusetts, established in 2018. It specializes in verifying the authenticity of digital photos and videos, offering solutions tailored for various sectors including insurance, public safety, real estate, automotive, news and media, and banking. The company's platform utilizes artificial intelligence and blockchain technology to create tamper-proof digital media by "fingerprinting" images and videos, thus effectively preventing fraud and ensuring data integrity. Attestiv's solutions aim to streamline business processes, enhance customer experiences, and reduce risks associated with digital transformations. By validating media from the point of capture and throughout its lifecycle, Attestiv helps organizations improve accuracy, save costs, and maintain interoperability within existing systems.
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.
ZenLedger, Inc. is a software company that specializes in cryptocurrency tax management, founded in 2017 and headquartered in Bellevue, Washington. The company provides a comprehensive tax tool designed for cryptocurrency investors and accountants, allowing users to easily import their cryptocurrency transactions, calculate gains and income, and prepare tax returns. ZenLedger's platform generates various essential documents, including profit/loss statements, capital gains reports, and income reports, thereby simplifying the tax reporting process for miners, day traders, and long-term holders. It is compatible with a wide range of exchanges, currencies, and wallets, making it a versatile solution for both individual investors and tax professionals. By automating the tax preparation process, ZenLedger aims to alleviate the complexities and challenges associated with cryptocurrency taxation.
Flipside Crypto, Inc. is a Boston-based company that operates a cryptocurrency information platform designed to provide business intelligence for blockchain organizations. Founded in 2017, the company offers a range of services, including cryptocurrency management, acquisition, digital walleting, custody services, and portfolio dashboards for investors. Flipside Crypto specializes in analytics, delivering insights into user behaviors, developer activities, and financial metrics. It also offers the Fundamental Crypto Asset Score (FCAS), which measures the fundamental health of cryptocurrency projects. Additionally, Flipside Crypto collaborates with partners like CoinMarketCap and Messari to distribute its analytics. The company is backed by notable investors, including Coinbase Ventures and True Ventures.
DUST Identity, Inc. specializes in developing an authentication system that employs nano-diamonds to create an unclonable identity layer on various objects for supply chains. This technology, known as DUST, links physical items to their digital records, allowing for secure verification and authentication. The company also offers an optical scanner and a cloud-based infrastructure that facilitates access to object identity and provenance information. Founded in 2011 and headquartered in Framingham, Massachusetts, with an additional office in Princeton, New Jersey, DUST Identity aims to ensure that trusted data and verifiable products can be traced throughout their lifecycle, thus enhancing safety and reliability in product sourcing, testing, and certification.
Andrena, Inc. is a New York-based company that specializes in providing high-speed internet services tailored for clients with significant data requirements, such as universities, hospitals, and financial institutions. The company develops an internet distribution platform that collaborates directly with internet providers to utilize their existing fiber networks. By deploying a network of antennas, Andrena enables comprehensive wireless internet coverage across various geographic areas. This approach allows businesses and customers to access faster internet connections at reduced costs, addressing the growing demand for reliable and efficient internet services in data-intensive environments.
Coin Metrics Inc. is an online publisher specializing in blockchain and cryptocurrency data, offering a range of market and network analytics to various industries. Founded in 2017 and based in Cambridge, Massachusetts, the company provides several key products, including the CM Network Data Pro, which delivers historical crypto network data in a detailed format for institutional clients. Additionally, Coin Metrics offers the CM Market Data Feed, a standardized solution for trade, candle, and order book data from multiple exchanges, and CM Reference Rates, which provides fixed pricing for various assets quoted in U.S. dollars. By focusing on transparent and actionable data, Coin Metrics enables stakeholders to better understand and utilize public crypto networks.
Flipside Crypto, Inc. is a Boston-based company that operates a cryptocurrency information platform designed to provide business intelligence for blockchain organizations. Founded in 2017, the company offers a range of services, including cryptocurrency management, acquisition, digital walleting, custody services, and portfolio dashboards for investors. Flipside Crypto specializes in analytics, delivering insights into user behaviors, developer activities, and financial metrics. It also offers the Fundamental Crypto Asset Score (FCAS), which measures the fundamental health of cryptocurrency projects. Additionally, Flipside Crypto collaborates with partners like CoinMarketCap and Messari to distribute its analytics. The company is backed by notable investors, including Coinbase Ventures and True Ventures.
DUST Identity, Inc. specializes in developing an authentication system that employs nano-diamonds to create an unclonable identity layer on various objects for supply chains. This technology, known as DUST, links physical items to their digital records, allowing for secure verification and authentication. The company also offers an optical scanner and a cloud-based infrastructure that facilitates access to object identity and provenance information. Founded in 2011 and headquartered in Framingham, Massachusetts, with an additional office in Princeton, New Jersey, DUST Identity aims to ensure that trusted data and verifiable products can be traced throughout their lifecycle, thus enhancing safety and reliability in product sourcing, testing, and certification.
ZenLedger, Inc. is a software company that specializes in cryptocurrency tax management, founded in 2017 and headquartered in Bellevue, Washington. The company provides a comprehensive tax tool designed for cryptocurrency investors and accountants, allowing users to easily import their cryptocurrency transactions, calculate gains and income, and prepare tax returns. ZenLedger's platform generates various essential documents, including profit/loss statements, capital gains reports, and income reports, thereby simplifying the tax reporting process for miners, day traders, and long-term holders. It is compatible with a wide range of exchanges, currencies, and wallets, making it a versatile solution for both individual investors and tax professionals. By automating the tax preparation process, ZenLedger aims to alleviate the complexities and challenges associated with cryptocurrency taxation.
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